[Land-speed] Tire Valves

[Joe Timney]

Speaking of screw in valve stems...I got this tip from a rim manufacturer:
Red or yellow color coded stems are ok, white or blue are not to be used 
for our application.
joe

Kirkwood wrote:
> I picked up some ''special'' tire valves this afternoon from a racing tire
> distributor. He said a few folks are using them on their LSR tires. I have
> never seen them before and would like your comments.
>
>  
>
> The usual steel valve is inserted from the inside and has a nut screwing
> everything together from the outside (with a rubber gasket providing the
> seal). These valves have a 1/8 NPT (tapered pipe thread). You just tap the
> rim (carefully) and then screw them in from the outside. They are high
> quality Schrader tank valves. There is no rubber gasket because the pipe
> thread is self-sealing. I don't think any pipe thread is completely leak
> proof but the dealer said red Locktite will do the job. There is no rubber
> gasket which could be a failure point. What is your experience with the high
> pressure (70psi) LSR tires? Is the screw in design as strong as the other
> method?  TIA  :-)