Tube talk...

>At 06:58 08/02/00 GMT, Chris Reeder wrote:
>>Also, the tire shifts on the rim some when I ride it, so that the valve
>>stem is now angled about 30 degrees off of perpendicular. Does this happen
>>to any of you?
>
>Yes, this happens to me sometimes. I shift it round asap so the base of the
>stem doesn’t get worn through.

It sounds like you’re using the “schrader” (sp?) type valve, the kind that
comes standard with many bikes and unicycles. I would recommend switching tube
styles to “presta” valves (just about any good bike shop will have them.)
They’re a little more expensive, but worth it. They have a steel shank that’s
threaded, with a lock nut to tighten it into the rim. As long as the lock nut
is tightened, it can’t slip. Besides, with a steel shank, you can’t wear
through it anyway.

Tim B.

Re: Tube talk…

>>At 06:58 08/02/00 GMT, Chris Reeder wrote:

>>>Also, the tire shifts on the rim some when I ride it, so that the valve stem
>>>is now angled about 30 degrees off of perpendicular. Does this happen to any
>>>of you?

>>Yes, this happens to me sometimes. I shift it round asap so the base of the
>>stem doesn’t get worn through.

“T.M.B.” <wheeler@tomatoweb.com> wrote:

>It sounds like you’re using the “schrader” (sp?) type valve, the kind that
>comes standard with many bikes and unicycles. I would recommend switching tube
>styles to “presta” valves (just about any good bike shop will have them.)
>They’re a little more expensive, but worth it. They have a steel shank that’s
>threaded, with a lock nut to tighten it into the rim. As long as the lock nut
>is tightened, it can’t slip. Besides, with a steel shank, you can’t wear
>through it anyway.

Note that the hole for a schrader valve stem is bigger than one for a presta
valve stem, so special mounting hardware might be needed to keep the presta
valve from moving in the bigger schrader valve rim hole.

Sincerely,

Ken Fuchs <kfuchs@winternet.com>

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