Bicycles Asked by ss ulrey on December 3, 2020
Has anyone ever heard of this? I’m not sure how it happened, but when I went to replace my tire today, I found that I had two stem lock nuts on my valve. One inside the rim and one in the normal place. Not sure if the shop did this for me a awhile back or if I did this absentmindedly last time I changed it. Anyway, it didn’t cause any problems and I put at least a few hundred miles on it like that.
Any reason to do that? Thanks!
No, there is no reason for that type of installation unless the whole in the rim is sized for a Schrader valve, rather than a presta valve.
It is, as you found, unlikely to cause an issue though.
Answered by zenbike on December 3, 2020
It is a commonly used quick and dirty fix when you don't have a purpose-built grommet to install in a rim cut for a Schrader valve. It may also not be a terrible idea if, for whatever reason, your Presta-hole rim has a burr or sharp edge and you want to avoid any possibility of problems with that.
Answered by Kevin on December 3, 2020
I put one inside and outside after having a few failures of the valve stem tube connection point. It appeared that the stem was being pulled away from the tube Now months of use later no issues
Answered by user52956 on December 3, 2020
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