TTR 110 Issue

The Racers Connection
Hey Guys,

I use a 2015 yamaha ttr 110 as a pit bike. I have been having issues with the rear tire constantly going flat. I'll change the tube and sometimes it will last 2 weeks and sometimes it will last 5 minutes. When I first got it it lasted like a year before I got my first flat, now its like every other time I ride it. What could be causing this?

I would have posted this in the Tech Help/Race Shop section but it looks like it got hacked or something.
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Elbows
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Elbows 6/14/2017 6:28am
6/14/2017 6:28am
If it doesn't have a rim lock, put one on it. It might have something inside the tire causing it to go flat.
motosurf
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motosurf 6/14/2017 6:32am
6/14/2017 6:32am
Run your hand through the inside of your tire might be a thorn or something in there
mattyhamz2
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mattyhamz2 6/14/2017 6:52am
6/14/2017 6:52am
definitely check the tire for thorns or anything small sticking through the tire. Also, I know it's obvious, but check the tire pressure before you ride it every time. Check to make sure there isn't a spoke sticking out of the nipple a bit as well.
loftyair
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loftyair 6/14/2017 7:57am
6/14/2017 7:57am
Yeah, sometimes a spoke, or the rim itself has a bit of a sharp spot. Take tire all way off, run hand inside all the way around. Be careful, you can cut yourself.

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TheCRKid
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TheCRKid 6/14/2017 8:03am
6/14/2017 8:03am
Rim lock
Adult Pit bike Run 20 PSI in Pit bike tires min
Rim strip or back wrap tape
Check for sharps tires and on rim
Hman144
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Hman144 6/14/2017 8:09am
6/14/2017 8:09am
All of the above. Had a similar problem on our KLX110 that saw adult usage. Had both a sharp edge inside AND tore valve stems due to rotation.
mx 219
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mx 219 6/14/2017 8:24am
6/14/2017 8:24am
Run tire pressure at 25-30 PSI if you are riding it aggressively. No rim lock needed.
The Racers Connection 6/14/2017 8:26am
6/14/2017 8:26am
Hman144 wrote:
All of the above. Had a similar problem on our KLX110 that saw adult usage. Had both a sharp edge inside AND tore valve stems due...
All of the above. Had a similar problem on our KLX110 that saw adult usage. Had both a sharp edge inside AND tore valve stems due to rotation.
When changing the tube I've noticed a lot of black dust inside the tire where it seems like there is a lot of friction taking place. Think thats a sign of rotation?
kage173
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kage173 6/14/2017 8:39am
6/14/2017 8:39am
I had the same issue with a CRF 70. It was a rim lock deal.
mx 219
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mx 219 6/14/2017 9:00am
6/14/2017 9:00am Edited Date/Time 6/14/2017 9:02am
kage173 wrote:
I had the same issue with a CRF 70. It was a rim lock deal.
The Racers Connection wrote:
Did you have to drill a hole in the rim for it? The only hole my rim has is for the valve stem
Ditch the rim lock.

My brothers, dad, and I have 4 KLX 110Ls. When I first got them we got like 7-8 flats the first few weeks, between 3 bikes. We got rim locks, but it didn't really help. The only thing that has really fixed the problem is keeping the PSI above 25. Yes, it makes it a little easier to slide out, but beats messing with a 12" rear wheel.
kage173
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kage173 6/14/2017 9:06am
6/14/2017 9:06am
The Racers Connection wrote:
Did you have to drill a hole in the rim for it? The only hole my rim has is for the valve stem
Yes. Just bought a regular rim lock, then sized it up to the proper drill bit and drilled it out at about 1/2 way across from the valve stem. It was a pretty easy deal and never had a problem after that.

I guess you can go with a high psi instead. Maybe try that first and go this route if it keeps happening.
Hman144
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Hman144 6/14/2017 10:06am
6/14/2017 10:06am
The black dust is likely a function of relative movement between the tire and tube- squishing and rolling and stuff but not necessarily rotation. Could be, but rotation will result in a flat pretty quick due to stem tear. Make sure your nipple tops are taped off to prevent dirt/water entry. (That sounds dirty, but it's not.)
TripleFive 6/14/2017 10:22am
6/14/2017 10:22am
When looking at the flat tubes, what do the holes look like that caused the leak?
The Racers Connection 6/14/2017 11:31am
6/14/2017 11:31am
TripleFive wrote:
When looking at the flat tubes, what do the holes look like that caused the leak?
There is usually no direct puncture hole like it was a thorn. You usually have to find the leak and really stretch the tube to see the hole. I know I've had a couple in the general area of the valve stem, but not directly around where the valve stem attaches to the tube.

I would have kept better track of what was happening when this started if I knew I was going to be dealing with this haha

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