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Author Topic: Strange screeching sound  (Read 2696 times)

Offline nevadazx12

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Strange screeching sound
« on: May 30, 2012, 02:26:44 PM »
Got the Connie out the other day and took it for the first ride of the season.  All went well until the next morning when I started down from the lake.  Heard a loud screeching sound, think it was coming from the front of the bike.  Made no difference as to speed, clutch in so engine went to idle.  I thought it may be the fan, but the temp gauge was on the cool side before the midway point.  I went off and on intermittantly for about 20 miles.  When I got to town and in traffic, heard the fan come on, no unusual noise.  After I got home set bike on center stand, let it run and no noise.  Will take a ride again this evening, any iideas?????

thanks,
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1986 Connie
1974 BMW 90/6
1964 Triumph T100SC

Offline George R. Young

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Re: Strange screeching sound
« Reply #1 on: May 30, 2012, 02:46:49 PM »
Speedo cable?
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Offline Jet86

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Re: Strange screeching sound
« Reply #2 on: May 30, 2012, 04:20:26 PM »
Quote from: George R. Young on May 30, 2012, 02:46:49 PM
Speedo cable?

Bingo! mine did the same thing when i first got it, i think most of them do that after sitting a while, pull the cable from the speedo gear and hit it with WD40 or a little grease.
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1986 California Connie 87k and counting

Offline nevadazx12

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Re: Strange screeching sound
« Reply #3 on: May 30, 2012, 04:40:37 PM »
Thanks guys,

When I get back tomorrow I will check it out, it's nice and warn now so we see if it does it when it's warm or just when it's cold tomorrow in the AM.

My 86 has 64K and goes great, luv that bike.

take care,
 ;D ;D
gg
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1986 Connie
1974 BMW 90/6
1964 Triumph T100SC

Offline Summit670

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Re: Strange screeching sound
« Reply #4 on: May 30, 2012, 08:29:54 PM »
You say makes no difference as to speed so I'd say if the sound doesn't change in some way with ground speed or engine speed, it probably isn't the speedo cable or balancer shaft or wheel bearings.  I'd suspect the fan motor making noise or maybe the fan blade itself was rubbing something.
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Offline Boomer

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Re: Strange screeching sound
« Reply #5 on: June 04, 2012, 04:05:16 PM »
It's the speedo drive on it's way out.
Sounds like someone torturing a seagull.
It'll get worse and worse and one day your speedo will quit.
Just buy a new speedo drive.
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Offline m hanlen

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Re: Strange screeching sound
« Reply #6 on: June 06, 2012, 06:40:55 AM »
Did you check the A/C belt? They're known to fail at 64k!  :)
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Offline snarf

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Re: Strange screeching sound
« Reply #7 on: June 06, 2012, 08:58:10 AM »
Quote from: m hanlen on June 06, 2012, 06:40:55 AM
Did you check the A/C belt? They're known to fail at 64k!  :)
You may be on to something.  I have found in the past that over-tightening the a/c will put excessive side load on the muffler bearings.  This may be what he is hearing 8)
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Offline RFH87_Connie

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Re: Strange screeching sound
« Reply #8 on: June 06, 2012, 09:00:25 AM »
Did your wife/GF go along for the ride?
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Offline snarf

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Re: Strange screeching sound
« Reply #9 on: June 06, 2012, 09:01:35 AM »
Quote from: RFH87_Connie on June 06, 2012, 09:00:25 AM
Did your wife/GF go along for the ride?
Good call  :rotflmao:  does it sound like your being chased by a turkey ???  My god that was hilarious.
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2002 Conc
1986 Conc "The spirit of COG"

"We did not become the men that we are because we were Sailors, soldiers or cops; we became Sailors, soldiers and cops because of the men we are."
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