Stupid question, but are the c10 rims tubeless? Pulled my tires and they have tubes currently. Thanks

Like any tire system, you can use tubes, but are not necessary. I am sure more will drop in, but it is probably a personal choice.
Ride safe all.
Greg

The bikes came from the factory with No tubes

Thanks, I can't figure out why I put tubes in to start with. It must have came with tubes from previous owner and I followed suit I guess. I am going to go TUBELESS

Wayne

You can buy the tubeless rim valve stems at the local auto parts store but remember these (my 87 anyhow) are the small dia type.

I ended up using the oem metal with new rubber from some stems I bought at the parts store.  I liked the OEM better than what I had bought so I just used the new rubber. 

I did turn the rear 90 stem at a 45 degree angle but next time I'll leave it at a 90 angle to the rim because now every time I check pressure or add air I have to be careful the wheel doesn't turn on me from the pressure I apply to the valve stem.  The stem is still a 90 but I rotated it a little for better access.

If we're going to talk valve stems, I got the 85 degree stems from kurveygirl.  I point them both towards the right side of the bike for easy access when the bike's on the sidestand.

I just bought a second set for my recent tire replacement as a precaution against the seals getting old. (about 35k since I installed the stems)  But the ones I took off look quite good.  Cheap insurance, anyway.

A few things have gone unmentioned. They don't seem to weigh much but a tube in a tubeless tire is unneccessary unsprung weight resulting in a rougher ride. Tubes in tubeless tires can overheat the tires. A warm tire grips better than a cold one (within the tire's operating temp range). A hot front  tire will get "greasy". Not literally but it will get slippery to the point of "washing out" resulting in a low-side crash. A tube adds thickness to a tubeless' supple sidewall and prevents the it from placing its tread on the road surface as designed.

A few things have gone unmentioned. They don't seem to weigh much but a tube in a tubeless tire is unneccessary unsprung weight resulting in a rougher ride. Tubes in tubeless tires can overheat the tires. A warm tire grips better than a cold one (within the tire's operating temp range). A hot front  tire will get "greasy". Not literally but it will get slippery to the point of "washing out" resulting in a low-side crash. A tube adds thickness to a tubeless' supple sidewall and prevents the it from placing its tread on the road surface as designed.

So there,
Ride safe anyway, even you Elvin, you smarty pants.
Greg

For what it's worth the rear tube weighs 2.6 pounds (without air ).
It would have been fun trying to use my plug kit on a tubed tire!