spaeking about tires, this time about bicycle tires

[space-time]

Kids have these cheap Huffy bikes, some are bought new, some are passed along from neighbors. The tires seem OK, and I put new tubes. After a while, the stem (valve?) is no longer perpendicular to the rim, it gets tilted, the tube slides inside about 1/2 or maybe 1". When it is really bad and the stem is at 45 degree, I end up reflating the tube, loosening and the tire and realigning everything before I inflate again. Then 3 months later when the kids complain the tires are low, again I find the stem tiled about 20-30 degree.

What can I do to fix this?

Thanks

[Filliam H. Muffman]

One possible solution is to get tubes with threaded schrader valves. Keep the nut tight and it won't rotate.

https://www.amazon.com/dp/B0068FAO3Y/


You could also put contact cement on the rim where it contacts the tube but that could ruin the tube the next time you take the wheel apart.

[Markintosh]

That slippage is usually associated with too low tire pressures. Consider pumping them up a bit more than whatever you have been doing.

[space-time]

Markintosh wrote:
That slippage is usually associated with too low tire pressures. Consider pumping them up a bit more than whatever you have been doing.

I think you hit the nail on the head! Now that I think about it, the pressure is supposed to be 60 PSI and I put in 60 PSI, but kids come back months later complaining the tire is low, and it is 20 PSI. Maybe if I keep an eye on it and pump it back to 60 PSI before the ride their bikes, that would alleviate the issue.

Thanks

[srf1957]

My cheap mountain bike was always low . Got slime tubes that are extra thick and filled them with fix a flat . My redneck solution .

[Racer X]

bet they weigh 5 pounds each too.

[RAMd®d]

bet they weigh 5 pounds each too.

Nothing wrong with that.

It gives the kids a good work out.

[cbelt3]

Give each kid a tire pressure gauge and teach them to check tire pressure before each ride. And make a pump accessible. Then teach them how to fix their own tube leaks.

[space-time]

cbelt3 wrote:
Give each kid a tire pressure gauge and teach them to check tire pressure before each ride. And make a pump accessible. Then teach them how to fix their own tube leaks.

I am not sure how to respond. In principle you are right. But these kids are born and raised in a world where we grownups do everything for them. They can’t even take responsibility for recharging AA cells for mice and keyboards. They barely manage to charge their school chrome book and their iPhone. They would hate me if I asked them to fix tube leaks. This is entirely our fault.

[M A V I C]

space-time wrote:
[quote=Markintosh]
That slippage is usually associated with too low tire pressures. Consider pumping them up a bit more than whatever you have been doing.

I think you hit the nail on the head! Now that I think about it, the pressure is supposed to be 60 PSI and I put in 60 PSI, but kids come back months later complaining the tire is low, and it is 20 PSI. Maybe if I keep an eye on it and pump it back to 60 PSI before the ride their bikes, that would alleviate the issue.

Thanks
Should probably be closer to 40 psi and then refill every month or so.