Kawasaki Concours Forum

The C-14, aka Kawasaki Concours-14, the new one :) => The Bike - C14/GTR 1400 => Topic started by: yubee on August 10, 2014, 03:59:25 PM

Title: Bike vibrates from 85miles/hr
Post by: yubee on August 10, 2014, 03:59:25 PM
2010 C-14
Mileage 5500 miles
I took my bike to a local Tire Repair Tech to have my new tires ( Michelin PR4 ) installed.
Tech ripped the TPS apart but fixed it with Super Glue and Araldite. Sensor is still working and looks okay.
Bike now runs smooth up to about  80 miles per hour and then all hell is let loose. The bike now vibrates seriously and seems to wobbling at very high frequency.
If I try to brake at this speed I notice it doesn't stop in a straight line and seems to be go in a zig-zag direction as it stops.
Checked my brake pads and got them changed out. I also noticed the Rear tire seemed to have a little play and when I checked with the Bike on the Center stand.
Has anyone experienced this also please.
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on August 10, 2014, 06:56:12 PM
If you didn't have that issue before then either the tech didn't install something correctly, balance the tire correctly, or one of the tires isn't right.  There shouldn't be any play in the rear wheel.  Could be something out of whack there and could cause things to get squirrely.
Title: Re: Bike vibrates from 85miles/hr
Post by: Kirby on August 10, 2014, 07:00:58 PM
What is that supposed to mean? Is that some kind of cheap shot? What exactly do you mean by 'get squirrely'? What would be wrong with something 'getting suqirrely'?

 >:(

Kirby


<snip>

Could be something out of whack there and could cause things to get squirrely.
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 10, 2014, 07:02:34 PM
Sorry Jim, I couldn't stop him. You know how he can be....

Then again, 'squirrely' is kind of old- school and probably not politically correct anymore. Just sayin'.

Brian

What is that supposed to mean? Is that some kind of cheap shot? What exactly do you mean by 'get squirrely'? What would be wrong with something 'getting suqirrely'?

 >:(

Kirby
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 10, 2014, 07:06:02 PM
No way to know but the most likely thing is what Jim said- bad balance or possibly a bad tire. Also the possibility that one tire bead is not 100% seated. Any of those things are 'not good' but a bead not seated would be bad. Most likely it is balance though because the other two problems would not normally suddenly appear at a particular speed but would always be present.

You can check to see if both tires rotate without any wobble while the bike is on the centerstand; just look for something obviously not tracking true as the tire and wheels rotate. After that, I would suggest taking the bike back to where you had the work done and asking them to have a look and possibly do a quick check on both tire's balance.

Brian

2010 C-14
Mileage 5500 miles
I took my bike to a local Tire Repair Tech to have my new tires ( Michelin PR4 ) installed.
Tech ripped the TPS apart but fixed it with Super Glue and Araldite. Sensor is still working and looks okay.
Bike now runs smooth up to about  80 miles per hour and then all hell is let loose. The bike now vibrates seriously and seems to wobbling at very high frequency.
If I try to brake at this speed I notice it doesn't stop in a straight line and seems to be go in a zig-zag direction as it stops.
Checked my brake pads and got them changed out. I also noticed the Rear tire seemed to have a little play and when I checked with the Bike on the Center stand.
Has anyone experienced this also please.
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on August 10, 2014, 07:11:36 PM
What is that supposed to mean? Is that some kind of cheap shot? What exactly do you mean by 'get squirrely'? What would be wrong with something 'getting suqirrely'?

 >:(

Kirby

Look Kirb, don't get on my bad side.  I haven't banned anyone lately and I'm just itchin to do so.  You could make my day....just keep on...  And yeah, I'll just say it.  I don't like squirrels.  They're bad for business, eat up my vegetables, smoke cigarettes and throw the butts on the ground.  They're just bad news all around with their fuzzy tails and climbing trees and throwing nuts on you.  The more I think about it, the more I want to buy a 410. ;D :deadhorse:   Just substitute a squirrel for the horse and you should get my drift on squirrels.
Title: Re: Bike vibrates from 85miles/hr
Post by: ZG on August 10, 2014, 07:58:04 PM
What is that supposed to mean? Is that some kind of cheap shot? What exactly do you mean by 'get squirrely'? What would be wrong with something 'getting suqirrely'?

 >:(

Kirby


 :rotflmao:
Title: Re: Bike vibrates from 85miles/hr
Post by: jirod on August 10, 2014, 08:27:31 PM
The inertial load on a sensor at 80  mph is considerable (I came up with 425 times the acceleration of gravity, but it's late and I may have made a math error).  Assuming everything is good with the tire, the installation, and the balancing, your damaged sensor may be deforming or even lose in the tire, still transmitting, but throwing the wheel out of balance.  I think they owe you a new sensor. I wouldn't trust superglue and araldite to hold it together. That is not a safe repair procedure in my opinion.
Title: Re: Bike vibrates from 85miles/hr
Post by: datsaxman@hotmail.com on August 10, 2014, 09:39:19 PM
jirod, I get over 600g.  THAT IS A LOT ALL RIGHT!!

Second the motion that the tech needs to inspect on the shop's time and dime. 


saxman
Title: Re: Bike vibrates from 85miles/hr
Post by: Conrad on August 11, 2014, 04:57:10 AM
(https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcQug4X-dVIwueCD8Fr-sqFn7arricf_OQgTT_A4QULemTqAQw9-)
Title: Re: Bike vibrates from 85miles/hr
Post by: mike-s4 on August 11, 2014, 06:49:04 AM
https://www.youtube.com/watch?v=ctVQb8QmlL4 (https://www.youtube.com/watch?v=ctVQb8QmlL4)
Title: Re: Bike vibrates from 85miles/hr
Post by: gPink on August 11, 2014, 06:53:37 AM
 :rotflmao: :rotflmao: :rotflmao:
Title: Re: Bike vibrates from 85miles/hr
Post by: The Pope on August 11, 2014, 07:28:48 AM
:rotflmao: :rotflmao: :rotflmao:

Me too!!!!!   :rotflmao: :rotflmao: :rotflmao:

back on the OPs issue....

like it has already been said....

If you didn't have that issue before then either the tech didn't install something correctly, balance the tire correctly, or one of the tires isn't right.  There shouldn't be any play in the rear wheel.  Could be something out of whack there and could cause things to get squirrely.
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on August 11, 2014, 07:55:10 AM
Put the bike on the center stand and do a thorough inspection. Any excessive play in front or rear? Spacers in place? Tires fully seated on the bead? All bolts in place? Out of balance will definitely cause vibration but shouldn't cause wobbling or asymmetric braking.

Sorry just read that you did put it on the center stand. If the rear tire has too much play, check the spacers are in and torque on the rear axle. Or wheel bearings. I wouldn't expect any wheel bearing problem at 5500 miles.
Title: Re: Bike vibrates from 85miles/hr
Post by: Kirby on August 11, 2014, 08:16:14 AM
You wanna' start with me? You feelin' strong? C'mon! You think you got nut problems now....!

Wow, let's settle down. Sorry Jim, I just get overwhelmed this time of year what with trying to stock up, the wife and kids not helping or even paying attention. A new cat in the neighborhood to keep and eye on and on top of all of that a little bit of a rash of KiPass bashin' and dissin'. Things will get better once the leaves turn.

Kirby

Look Kirb, don't get on my bad side.  I haven't banned anyone lately and I'm just itchin to do so.  You could make my day....just keep on...  And yeah, I'll just say it.  I don't like squirrels.  They're bad for business, eat up my vegetables, smoke cigarettes and throw the butts on the ground.  They're just bad news all around with their fuzzy tails and climbing trees and throwing nuts on you.  The more I think about it, the more I want to buy a 410. ;D :deadhorse:   Just substitute a squirrel for the horse and you should get my drift on squirrels.
Title: Re: Bike vibrates from 85miles/hr
Post by: maxtog on August 11, 2014, 05:08:42 PM
:rotflmao: :rotflmao: :rotflmao:

That is mean!
(But funny too :) )
Title: Re: Bike vibrates from 85miles/hr
Post by: Conrad on August 12, 2014, 04:36:59 AM
You wanna' start with me? You feelin' strong? C'mon! You think you got nut problems now....!

Wow, let's settle down. Sorry Jim, I just get overwhelmed this time of year what with trying to stock up, the wife and kids not helping or even paying attention. A new cat in the neighborhood to keep and eye on and on top of all of that a little bit of a rash of KiPass bashin' and dissin'. Things will get better once the leaves turn.

Kirby

Stocking up on nuts? Geeze Kirb, in your current physical condition I'll bet one nut will last you the rest of your life, er, the rest of your days.
Title: Re: Bike vibrates from 85miles/hr
Post by: copdocpvd on August 12, 2014, 09:29:10 AM
A squirrel killed my mother.  just sayin'
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 12, 2014, 10:31:10 AM
Excellent job folks- a hearty congrats for another fine thread! There is only one thing left to say.....

KiPass

 :rotflmao:

Brian
Title: Re: Bike vibrates from 85miles/hr
Post by: gPink on August 12, 2014, 10:56:13 AM
We answered the OP's question didn't we?
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 12, 2014, 11:06:58 AM
Yes, absolutely. And we had a few chuckles too- a thread that consists of 100% goodness IMO. I think I should have put the little guy rolling on the floor laughing in my post? OK, put it in there (easy boys!).

Hey, if I cannot have a few chuckles, I probably would not even visit. Then again, I cause as many chuckles as possible so the places I visit tend to be fun.... at least for me :-)

Brian

We answered the OP's question didn't we?
Title: Re: Bike vibrates from 85miles/hr
Post by: tweeter55 on August 12, 2014, 11:58:25 AM
Living in your own little world are we, B D F? :chugbeer:
Title: Re: Bike vibrates from 85miles/hr
Post by: datsaxman@hotmail.com on August 12, 2014, 01:28:05 PM
Ohhh...and you're NOT??   Just sayin...

You have to be around here.




saxman
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 12, 2014, 03:05:14 PM
Absolutely! The one you live in looks dangerous and scary to me, plus it just does not work quite right.

 :rotflmao:  but only kind of....

Brian

Living in your own little world are we, B D F? :chugbeer:
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on August 17, 2014, 10:32:22 PM
https://www.youtube.com/watch?v=ctVQb8QmlL4 (https://www.youtube.com/watch?v=ctVQb8QmlL4)

Brian, what aspects of Quantum Mechanics were used in the implementation of the launched squirrel?  Did he travel as a single or in multiple particles, and where was the cat, dead or alive??? tp :P 
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 06:04:49 AM
Depends on who you ask- as far as I am concerned, none of them. Dan will probably tell you 'all of them' 'cause he is the Q.M. guy.

He traveled as a group of particles, exactly as he always exists, but I bet his sphincter particles were closer together than they usually are. All cats in the area were dead; there is no way a living cat could have possibly NOT tried to catch that squirrel in flight.

And that was a pretty funny video. Don't tell Kirby I said that.

Brian

Brian, what aspects of Quantum Mechanics were used in the implementation of the launched squirrel?  Did he travel as a single or in multiple particles, and where was the cat, dead or alive??? tp :P
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on August 18, 2014, 06:09:16 AM
I think this thread was about bike vibration, wasn't it?
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 07:45:23 AM
I believe it was until someone...... insulted the entire species of Sciuridae. Now who was that.....

Brian


I think this thread was about bike vibration, wasn't it?
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on August 18, 2014, 07:51:07 AM
Brane hurting again..
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on August 18, 2014, 08:07:00 AM
 :rotflmao: You guys crack me up!
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on August 18, 2014, 08:11:57 AM
Best thing to do is not go 85+ MPH, and all will be good, until what is really wrong will raise it's ugly head at 55, and then, HANG ON...
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 08:16:02 AM
Finally! A valid solution!

I went to the doctor and said 'Doc, it hurts when I do this (put physical activity here). The Doctor replied 'Don't do that (put same physical activity here also).

Brian

Best thing to do is not go 85+ MPH, and all will be good, until what is really wrong will raise it's ugly head at 55, and then, HANG ON...
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on August 18, 2014, 08:18:42 AM
Best thing to do is not go 85+ MPH, and all will be good, until what is really wrong will raise it's ugly head at 55, and then, HANG ON...

Then what's the point of having a C14?
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on August 18, 2014, 08:24:15 AM
Then what's the point of having a C14?
To ride over 85 without vibration, which he can't do at this time. So, he needs to ride below that speed  back to the tire installer, and not leave until the problem is solved, even if 85 is probably an illegal speed in his area.  Just sayin'.
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on August 18, 2014, 08:29:39 AM
To ride over 85 without vibration, which he can't do at this time. So, he needs to ride below that speed  back to the tire installer, and not leave until the problem is solved, even if 85 is probably an illegal speed in his area.  Just sayin'.

Sorry, thought you were proposing a permanent solution.
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 08:34:05 AM
You can go faster than 85 or slower than 85, you simply cannot go just 85 MPH.

Fortunately there is a principle in physics known as 'jerk'- the fourth derivative of position (easy boys!). Jerk can yield infinite acceleration, which means that things can achieve a certain velocity without having had gone through all lesser or greater velocities to get there. It is actually based in Quantum Mechanics (shiver me timbers) and says basically that the sum of all particles moving in a group (like us on motorcycles) does  not represent the velocity of the sub- components. And as the velocity of particles can change instantly, so too can the group of particles. This gives us two possibilities: one is that a motorcycle can reach, say, 100 MPH without ever having gone 85 MPH during its acceleration to 100 MPH. (cool, huh?) It also means that while nothing with mass can travel at the speed of light, it IS possible that objects could travel faster than the speed of light without ever actually having traveled at the speed of light.... which they cannot do.

Dan? Dan? Dan, where are you?
 :rotflmao:

Brian



Then what's the point of having a C14?
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on August 18, 2014, 08:39:35 AM
You can go faster than 85 or slower than 85, you simply cannot go just 85 MPH.

That's a good thing. Because if we knew our bike was going 85 mph we would not know where it was.  ;D
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on August 18, 2014, 08:48:10 AM
Sorry, thought you were proposing a permanent solution.

The only permanent solution for the bike's owner, would be to park it, and never ride it again.  Taking into consideration all the before mentioned possible causes and fixes, each of those fixes would only be temporary.  Tires  wear, balance gets off, bearings loosen, sensors get broken, etc, causing potential problems to return...

I still believe that returning to the person that rendered the repair that supposedly  caused the problem, is the next step, if the garage and traveling at 100, without seeing 85 aren't viable solutions. 

That faster than light speed thing does sound interesting, though.
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 08:54:21 AM
Of course but I think we covered all that, didn't we? Check the wheel balance. Check that the tires / wheels are running true (beads fully seated etc.). Take the bike back to the person / company that did the work and ask that it be checked. Finally, take the bike somewhere else and have them check some or everything mentioned above, of course paying again for this service. I think that about covers the problem as it exists in reality.

Then the thread went on disregarding reality and was actually pretty amusing- I think it is still that way now.

Is this not correct? Did I miss something?

And yep, the faster than the speed of light IS interesting but it begs the question: would the headlights be effective in that envelope of movement? Dan? Dan, where are you?

Brian

The only permanent solution for the bike's owner, would be to park it, and never ride it again.  Taking into consideration all the before mentioned possible causes and fixes, each of those fixes would only be temporary.  Tires  wear, balance gets off, bearings loosen, sensors get broken, etc, causing potential problems to return...

I still believe that returning to the person that rendered the repair that supposedly  caused the problem, is the next step, if the garage and traveling at 100, without seeing 85 aren't viable solutions. 

That faster than light speed thing does sound interesting, though.
Title: Re: Bike vibrates from 85miles/hr
Post by: gPink on August 18, 2014, 08:56:26 AM
"That faster than light speed thing does sound interesting, though."

I thought that's why it's called a 'c' 14.
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on August 18, 2014, 08:58:35 AM
And yep, the faster than the speed of light IS interesting but it begs the question: would the headlights be effective in that envelope of movement? Dan? Dan, where are you?

Brian

Of course they would. Because relative to you the light leaving the headlights would still be going the speed of light. Maybe a bit of a Doppler shift though.
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 09:12:51 AM
Well now we are getting a little off- topic maybe....  :yikes:

I think the light would advance (forward, in the direction of the vehicle) but the particles (the vehicle itself) would be ahead of the advancing light. Sort of like shooting a rifle at an aircraft moving away from the shooter at hyper speed of, say, Mach 3 or greater; the projectile would advance quite rapidly but actually fall behind the aircraft from the time it left the rifle's muzzle.

But of course this is open to all manner of theory and conjecture.

Where is Dan when we need him most?

Brian

Of course they would. Because relative to you the light leaving the headlights would still be going the speed of light. Maybe a bit of a Doppler shift though.
Title: Re: Bike vibrates from 85miles/hr
Post by: gPink on August 18, 2014, 10:47:53 AM
Well now we are getting a little off- topic maybe....  :yikes:

I think the light would advance (forward, in the direction of the vehicle) but the particles (the vehicle itself) would be ahead of the advancing light. Sort of like shooting a rifle at an aircraft moving away from the shooter at hyper speed of, say, Mach 3 or greater; the projectile would advance quite rapidly but actually fall behind the aircraft from the time it left the rifle's muzzle.

But of course this is open to all manner of theory and conjecture.

Where is Dan when we need him most?

Brian

But would that cause an 85 mph vibration?
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 11:15:14 AM
Perhaps but I now wonder if he was ever really going 85 MPH. Hmmmmmm?

Brian

But would that cause an 85 mph vibration?
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on August 18, 2014, 11:31:37 AM
Perhaps but I now wonder if he was ever really going 85 MPH. Hmmmmmm?

Brian

Been eight days, and yubee hasn't come back with further info, thanks, a conclusion to his problem, nothing.  Kinda strange to me...At least we shared good stuff with each other. Who ever said QM was boring and confusing?  Not none of me, for sure.  tp
Title: Re: Bike vibrates from 85miles/hr
Post by: datsaxman@hotmail.com on August 18, 2014, 03:40:23 PM
Brian...amigo...

You have the maths and the physics mostly wrong.  But at least you are having fun with it.

I won't comment here again so the thread can stay open...


saxman
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 04:03:42 PM
Wow, you cannot comment without making Jim close the thread? Besides, am I really wrong or is it that you calculated the probability is high that I am wrong?

As someone just said, the OP hasn't been back as often happens. Nevertheless, that person got useful information (I think), some good suggestions, guiless banter and nearly infinite (Easy Physics Boys!) entertainment. A winner all around....

 :rotflmao:

And hey, there is a thread on the other forum about which way valve lash changes and <gasp!> why it is how it is. I just jammed a bunch of material properties in that thread and am now waiting for the backlash (yep, pun intended).

Brian

Brian...amigo...

You have the maths and the physics mostly wrong.  But at least you are having fun with it.

I won't comment here again so the thread can stay open...


saxman
Title: Re: Bike vibrates from 85miles/hr
Post by: Rembrant on August 18, 2014, 06:31:27 PM
Ok...I ignored this thread until today. I just read through all four pages, and the whole works is nonsense...lol.

Rem :o

Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on August 18, 2014, 06:37:54 PM
Ok...I ignored this thread until today. I just read through all four pages, and the whole works is nonsense...lol.

Rem :o
OK, what is your recommendation for yubee?  Inquiring minds... well you know.   tp
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 18, 2014, 07:01:55 PM
Hey, I answered the guy's question / problem in reply #4. Don't let quantum mechanics throw you- there is good info. in this thread and Q.M. is nonsensical anyway (yeah, that was aimed at you Dan).  ;D

Brian

Ok...I ignored this thread until today. I just read through all four pages, and the whole works is nonsense...lol.

Rem :o
Title: Re: Bike vibrates from 85miles/hr
Post by: Son of Pappy on August 18, 2014, 09:24:31 PM
I have a permanent solution to the OP.  Give me your bike, sign the title over and I will trade you a distant cousin of Kirby with the same weight problem.  I promise I will never ride at 85, although I will pass it going both ways.

Another solution to the problem?  When was the last time you change your fob batteries and what oil do you run???

Lastly, do an exhaust volume test (stock or after market as we never did get an accurate test result).  The last time this was tried the tape melted before the 55 gallon hefty bag was at max volume.  BDF tried zip ties but the bag melted and made quite the mess.  Why the volume test?  The exhaust pulse from other than OEM is creating sonic waves that resonate in ways the brilliant engineers (KIPASS guys) never tested.
Title: Re: Bike vibrates from 85miles/hr
Post by: yubee on August 18, 2014, 09:57:22 PM
Ok, I had to ensure I checked all I had to check before responding. I got a new TPMS installed . All bolts and nuts are torqued correctly. Checked the rear and front wheel bearing and all looks good. Tires are brand new PR 4s. Rode the bike again, all smooth up to 65m/h . At about 80m/h it's vibrates then wobbles :o Note, Bike was perfect up to the end of the speed dial on the OEM tires. So,
I placed an order for the bikemaster wheel balancer. Will like to try my hands balancing the tires myself. Still open to ideas guys
Title: Re: Bike vibrates from 85miles/hr
Post by: Son of Pappy on August 18, 2014, 10:48:06 PM
If all is balanced, no other changes to bike or setup I would question the tire.  Maybe a fluke?  Any idea on how they reatached the front tire? 
Just to be sure, no other changes to the suspension??

If this persists can I have your bike?  I miss my '08 :(
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on August 19, 2014, 07:21:22 AM
Shades of dusty memories! I remember that thread- it was nothing short of fantastic. The original poster was a guy in TX if I remember right and he said that idling the C-14 put out stronger exhaust pulses at idle that at greater speeds. Then the plastic bag on the exhaust thing started and it became absolutely one of the best threads of the year (maybe forever)!

I think that went with the great Fournami of 2011. Too bad too 'cause I would go read that right now. Sure people would wonder what I was laughing at but who cares!

Thanks for that memory Chet- good stuff!

Brian


<snip>

Lastly, do an exhaust volume test (stock or after market as we never did get an accurate test result).  The last time this was tried the tape melted before the 55 gallon hefty bag was at max volume.  BDF tried zip ties but the bag melted and made quite the mess.  Why the volume test?  The exhaust pulse from other than OEM is creating sonic waves that resonate in ways the brilliant engineers (KIPASS guys) never tested.
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on August 19, 2014, 07:31:29 AM
Ok, I had to ensure I checked all I had to check before responding. I got a new TPMS installed . All bolts and nuts are torqued correctly. Checked the rear and front wheel bearing and all looks good. Tires are brand new PR 4s. Rode the bike again, all smooth up to 65m/h . At about 80m/h it's vibrates then wobbles :o Note, Bike was perfect up to the end of the speed dial on the OEM tires. So,
I placed an order for the bikemaster wheel balancer. Will like to try my hands balancing the tires myself. Still open to ideas guys

Where you at? I've got a Marc Parnes balancer that I have had good results with. I wouldn't expect it to make this kind of problem but have you checked that they put the tires and front wheel with the correct rotation? My son just had a dealer put a tire on his KLR backwards.
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on August 19, 2014, 09:58:05 AM
Shades of dusty memories! I remember that thread- it was nothing short of fantastic. The original poster was a guy in TX if I remember right and he said that idling the C-14 put out stronger exhaust pulses at idle that at greater speeds. Then the plastic bag on the exhaust thing started and it became absolutely one of the best threads of the year (maybe forever)!

I think that went with the great Fournami of 2011. Too bad too 'cause I would go read that right now. Sure people would wonder what I was laughing at but who cares!

Thanks for that memory Chet- good stuff!

Brian

I remember him, I think it was Roland and not the Roland with the Thompson.  I miss him.  Nothing, absolutely nothing could top Haroldo in terms of thread enjoyment and self satisfaction in knowing that I'm so  :censored: glad I never attempted the valve adjustment.
Title: Re: Bike vibrates from 85miles/hr
Post by: yubee on August 19, 2014, 11:55:00 AM
Where you at? I've got a Marc Parnes balancer that I have had good results with. I wouldn't expect it to make this kind of problem but have you checked that they put the tires and front wheel with the correct rotation? My son just had a dealer put a tire on his KLR backwards.

Rechecked rotation and its correct.
Title: Re: Bike vibrates from 85miles/hr
Post by: Daytona_Mike on August 19, 2014, 02:14:24 PM
Note, Bike was perfect up to the end of the speed dial on the OEM tires.
I am curious. What do you mean by 'end of the speed dial'? How fast is that?
Also are you saying the bike was 'fine until you installed new tires?
Are you installing the tires or is a dealer installing them and who and how are they being balanced?
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on August 19, 2014, 02:20:00 PM
2010 C-14
Mileage 5500 miles
I took my bike to a local Tire Repair Tech to have my new tires ( Michelin PR4 ) installed.
Tech ripped the TPS apart but fixed it with Super Glue and Araldite. Sensor is still working and looks okay.
Bike now runs smooth up to about  80 miles per hour and then all hell is let loose. The bike now vibrates seriously and seems to wobbling at very high frequency.
If I try to brake at this speed I notice it doesn't stop in a straight line and seems to be go in a zig-zag direction as it stops.
Checked my brake pads and got them changed out. I also noticed the Rear tire seemed to have a little play and when I checked with the Bike on the Center stand.
Has anyone experienced this also please.

His original post...  Assuming all was put back correctly (have my doubts) I think it's a bad tire.
Title: Re: Bike vibrates from 85miles/hr
Post by: Daytona_Mike on August 19, 2014, 03:13:25 PM
I agree Jim. Sounds like the tire.
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on August 19, 2014, 05:28:15 PM
I agree Jim. Sounds like the tire.

Yep.  Try this.  Break the tire beads off the rims and turn it 180 degrees, and reseat the beads, and balance.  Possible that the heavy part of the tire and wheel are aligned, creating a situation that balancing cannot correct.  Common with car tires, so could work for motorcycles too... tp
Title: Re: Bike vibrates from 85miles/hr
Post by: martin_14 on August 20, 2014, 03:33:33 AM
I didn't re-read all the previous posts, so I don't know if it was thrown in, so here I go: have you checked the steering bearing? (I hope that's the name in English, because in my Spanglish it sounds perfect  ;D)
I had some funny things happening at 110 mph and after correct tightening it never happened again, regardless of tyre, tyre pressure, seating position, top case, throttle bodies, the lot. I even went through 2 FOB batteries and it's still solid...
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on August 20, 2014, 05:02:18 AM
That's something everyone should check on a periodic basis, however the problem started after a tire change.  It was rock steady before that according to the OP.
Title: Re: Bike vibrates from 85miles/hr
Post by: PH14 on August 20, 2014, 06:01:40 AM
Slap a Harley sticker on it and be done with it.  :thumbs:
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on August 20, 2014, 06:43:07 AM
Slap a Harley sticker on it and be done with it.  :thumbs:

 :rotflmao: Brilliant!
Title: Re: Bike vibrates from 85miles/hr
Post by: Son of Pappy on August 20, 2014, 08:36:14 AM
Slap a Harley sticker on it and be done with it.  :thumbs:
Don't forget, add a cup holder, chrome, and make sure it's black :-X
Title: Re: Bike vibrates from 85miles/hr
Post by: jirod on September 07, 2014, 03:18:15 PM
So,  what ever happened to cause this shaking at 85 mph, yubee? What did you do to fix it?
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on September 07, 2014, 03:22:30 PM
I wondered that, too...  My Dyna vibrates at start offs, but at highway speeds is very smooth.  You guys must be thinking about the shovel heads and earlier rigid mounted engines.....tp
Title: Re: Bike vibrates from 85miles/hr
Post by: 1jeep on September 08, 2014, 07:52:52 AM
My previous HD ultra cvo had to go back to the dealer 3 times due to vibration after they replaced the tires. Some just dont balance well, i think HD was under the impression that none of their bikes could get up to 70 to have a vibration.
Title: Re: Bike vibrates from 85miles/hr
Post by: martin_14 on September 08, 2014, 11:42:15 PM
they might get to 70, it'll just take a little while... (http://www.freesmileys.org/smileys/smiley-sleep007.gif) (http://www.freesmileys.org/smileys.php)
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on September 09, 2014, 04:30:05 AM
And whilst we poke fun at HD and their riders, I can certainly say that I see them on the road and riding (albeit in pirate gear) much more than myself a and having a grand time of it.
Title: Re: Bike vibrates from 85miles/hr
Post by: Conrad on September 09, 2014, 05:55:50 AM
And whilst we poke fun at HD and their riders, I can certainly say that I see them on the rode and riding (albeit in pirate gear) much more than myself a and having a grand time of it.

Sometimes you don't even have to see them...
Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on September 09, 2014, 06:00:00 AM
Very true.
Title: Re: Bike vibrates from 85miles/hr
Post by: 1jeep on September 09, 2014, 06:08:45 AM
And whilst we poke fun at HD and their riders, I can certainly say that I see them on the road and riding (albeit in pirate gear) much more than myself a and having a grand time of it.

After having had spent $36k on a Harley and suffering through two of them along with the harrassement i get from my HD friends i think i have the right to poke a little fun at them! Besides i ride everyday, 70 miles round trip to work, only missed 3 days since may that i had to drive the truck. Yes, they get all dressed up and go on big ellaborate rides 4 times a year, doesnt mean they are having any more fun than we are.

I still have all my pirate gear....not sure what to do with it, doubt i will be wearing chaps and a vest on the concours!

As for being louder, yes i think ther is some advantage to that, i dont think the cages see or hear me coming on my sewing machine.
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on September 09, 2014, 06:57:51 AM
Hope this doesn't turn into a MOCO bashing thread.  There's enough of those on most every motorcycle forum not directly associated with Harleys.  Like it or not, they make a big contribution to the sport/hobby of riding.  In US new bike sales, over the past years, better than one out of two sold had a Harley vin#, over doubling our presence on the road. 

The majority of those buyers would probably not have bought had it not been their desire for a Harley.  We wouldn't have the Star, Shadow, Vulcan, or Boulavard lines from Japan manufacturers, in their attempts to compete for the cruiser market share either. 

Name recognition is MOCO's winningest attribute.  Any time some learns that I  am a rider, the first question to me is, "Do you ride a Harley?"  Not a Kawi, BMW, Honda, Yamaha, Moto Guzzi, etc, but a Harley, as that is what the public thinks of when they think of motorcycles.   

Kinda like the NY Yankees.  They're not my team, but they were the team that made baseball as popular  as it became.  Everyone spoke of the Yankee's as God's gift to baseball for decades,  not so much today, but they drew millions  to stadiums  to watch guys hit a small white ball.    Just morning mental wanderings on my part.  tp
Title: Re: Bike vibrates from 85miles/hr
Post by: B.D.F. on September 09, 2014, 08:06:26 AM
I do not think Jim would allow that to happen- this is a moderated forum.

On the other side of the coin, poking a bit of fun at another brand, and especially one so very, very different than the one that this forum is based on will happen and I would think it would be expected. Not to worry though, the Fudgers, the 'Drank the Kool Aid' BMW folks and just about everybody else gets it too.

Hey, I hang around with a BMW group and am actually amazed at how well they take a little poking about the brand.

Brian

Hope this doesn't turn into a MOCO bashing thread.

<snip>

Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on September 09, 2014, 08:30:21 AM
I understand that.  Besides the C14, I also ride a Dyna and an RT, so I get the pirate and espresso jabs from time to time.  Funny thing is, I've never dressed as a pirate or ride with any who do.    As far as espresso goes, I don't even drink coffee, so that pinky finger out grip on a cup's not my thing either. 

It is a guy thing to poke at other guys (not that  way), in friendship.  Been on both sides of that over the years, and am glad that Jim is here to keep things civil.  Some sites get way out of hand and the anonymous trolls and haters run amuck, ruining it for the others. 

MOCO does know how to market, and does it with out claiming the be the fastest, most modern, latest electronics, smoothest ride, etc.  They say when you ride a Harley, you are both part of history and the future of motorcycling.  Works for them, quite well. 
Title: Re: Bike vibrates from 85miles/hr
Post by: 1jeep on September 09, 2014, 08:31:08 AM
My intention wasnt to turnt this into a HD bash sesson, i do that face to face with those riders...they claim to be my friends still..lol I wont say i will never own one of those again or beat them down too badly as i never know what will happen 10 years form now. There are still some things i miss about the harley and yes, when i pull up on the kawasaki people dont come running over to see it. When i crack that throttle it doesnt deliver the same thunder or make me feel like a real man, they are two totaly differnt rides.

No doubt Harley marketing does a great job and their dealer network is like non other in this country, very hard to pull into a kawi dealer on a saturday afternoon in no mans land and have them change your tire right then and there.
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on September 09, 2014, 08:35:04 AM
That be the truth. 

BTW, did we ever find out why the OP's bike was vibrating at 85?  If so I don't remember it...
Title: Re: Bike vibrates from 85miles/hr
Post by: maxtog on September 09, 2014, 04:59:14 PM
I still have all my pirate gear....not sure what to do with it, doubt i will be wearing chaps and a vest on the concours!

I bought and wear black leather chaps on the Concours whenever it is cold.  Added protection, added warmth, easy to remove at my destination, etc.  Pretty much any other "pirate gear" is a waste because it is for show, not protection (toy half-helmets, fingerless gloves, unarmored sleeveless vests, etc)

Quote
As for being louder, yes i think ther is some advantage to that, i dont think the cages see or hear me coming on my sewing machine.

There really is no "advantage".  It is illegal, and extremely annoying for everyone that has to live nearby.  I would be beyond embarrassed riding such a thing (and this is not limited to HD types, although they seem to be the worst offenders).  It generally doesn't do a thing for "cages" in front of you because the sound comes out of the back and the sound is non-directional even if it is heard.  It is far, far better to have good lighting and predictive/defensive driving because everyone is out to kill us.  :(

And as a closing note, my favorite link on this topic: 

https://en.wikipedia.org/wiki/The_F_Word_%28South_Park%29 (https://en.wikipedia.org/wiki/The_F_Word_%28South_Park%29)
http://southpark.cc.com/full-episodes/s13e12-the-f-word#source=6b9ca5c9-c3e1-431b-bd57-4c2a369455bd%3A25eebf82-ed8e-11e0-aca6-0026b9414f30&position=12&sort= (http://southpark.cc.com/full-episodes/s13e12-the-f-word#source=6b9ca5c9-c3e1-431b-bd57-4c2a369455bd%3A25eebf82-ed8e-11e0-aca6-0026b9414f30&position=12&sort=)!airdate
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on September 09, 2014, 05:19:39 PM
I don't hear loud pipes like maybe I did 10 years ago.  Owned a few Harleys with loud exhaust, and besides hurting my ears, no one would ride beside or behind me, for all the noise.  My current Dyna has stock exhaust, and is quiet enough to pass all EPA and local regulations.  My ears don't hurt and my head doesn't ache after a ride, and I'm good with that.

What drives me crazy are the squids on supersports with open exhaust, especially 600cc 4 cylinder ones.  Very aggrivating, especially when they are red lining every gear.  It is kinda funny when they miss a shift, because everyone in a half mile radius hears it...
Title: Re: Bike vibrates from 85miles/hr
Post by: martin_14 on September 09, 2014, 11:46:59 PM
ok, guys, it's off topic, but I'd like to know: what is MOCO? Because in Spanish it means "snot"  ;D
Title: Re: Bike vibrates from 85miles/hr
Post by: Rembrant on September 10, 2014, 04:04:08 AM
ok, guys, it's off topic, but I'd like to know: what is MOCO? Because in Spanish it means "snot"  ;D

It simply stands for Motor Company......the Harely Davidson MOtor Company.

I have no idea who started using it, but the Harley guys will sometimes refer Harley Davidson as "MOCO".

That's my understanding at least...somebody can correct me if I'm wrong;). My old man has a Glider, and so do all of his buddies, so I do get some limited exposure;).

Rem :o

Title: Re: Bike vibrates from 85miles/hr
Post by: VirginiaJim on September 10, 2014, 04:26:29 AM
First time I've ever heard of that.
Title: Re: Bike vibrates from 85miles/hr
Post by: 1jeep on September 10, 2014, 06:10:10 AM
OP...did you ever find what was causing the vibration? was it a tire out of balance?
Title: Re: Bike vibrates from 85miles/hr
Post by: tomp on September 10, 2014, 06:35:04 AM
It simply stands for Motor Company......the Harely Davidson MOtor Company.

I have no idea who started using it, but the Harley guys will sometimes refer Harley Davidson as "MOCO".

That's my understanding at least...somebody can correct me if I'm wrong;). My old man has a Glider, and so do all of his buddies, so I do get some limited exposure;).

Rem :o

You are correct, sir.  The designation MOCO has become more popular in this interweb forum times, especially on H-D forums, as it is quicker to type than Harley-Davidson.  Even seen times when Harley has refered to themselves as MOCO. 

Now about that mysterious vibration at 85 MPH... tp
Title: Re: Bike vibrates from 85miles/hr
Post by: Rhino on September 10, 2014, 06:40:58 AM
First time I've ever heard of that.

Me too.