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Does anyone make tubeless prest valves that fit rims drilled for schrader?
I've converted a wheelset using Stans tape & valves but have had to bodge a fix (using a washer & piece of old innertube) to prevent the valve being pushed through the hole. Whilst it seems to be holding out, I'd prefer a better fix - have ordered a couple of valve hole reducers from JRA but these only resolve the external issue of the valve stem moving about.
Any ideas or does anyone make these valves with a wider end?
[url= http://www.chainreactioncycles.com/Models.aspx?ModelID=94761 ]these ?[/url]
I've also used cut down schwalbe inner tubes which had threaded valve outers so can be clamped down.
These are the ones I use:
Done 5 wheelset conversions on DH/AM bikes with these in the last year, all working perfectly still.
Also makes it easy to do problematic conversions as you can take the core out for initial seating/inflation to get lots more air through quicker.
🙂
Thanks chaps but I wanted presta valves really.
they [i]are[/i] right, nobby - I've used those noflats ones and they anchor to the rim really well. Nice big opening for fast inflation with the valve out too
have ordered a couple of valve hole reducers from JRA but these only resolve the external issue of the valve stem moving about.
One of [url= http://www.justridingalong.com/tubeless-parts-1/reducers-extensions/wheels-mfg-alu-rim-reducer-no-option.html ]these[/url]? I have them in my wheels - though using tubes at present - and should think they'd work just fine with a tubeless valve. The latex ought to seal any small gaps.
[url= http://www.notubes.com/Stans-Standard-Valve-Stem-Problem-Solver-P624C16.aspx ]they may have some left[/url] and note the order restriction.
alternatively you could just buy the "normal" ones and make your own gasket. small piece of ply and black silicon rubber would do the trick.
Scaredypants- those valves are schrader & I want to continue using presta.
aracer - yep, those ones. I assumed they drop in to the rim from the outside so don't influence where the valve comes through the inner wall? Will have a look when they arrive.
Klunk - they look the job, will order a pair when I get home. Cheers.
I took a stans rim strip I had lying about and just cut most of the strip off- not cheap if I didn't already have the bits, but it's worked out perfectly.
I assumed they drop in to the rim from the outside so don't influence where the valve comes through the inner wall?
Nope - they thread from the inside - would be kind of pointless otherwise.
Excellent, thanks.
I'd assumed they went in the other way as the plastic ones do.