National course, national fine, nation pipe thread.

Have a lathe handy?

 

Thanks, Lou...can't be very much with a vented cap then

 

Oh yeah, several in the Garoffice, this is a fully equipped machine, welding, paint and body shop..... My English wheel for forming panels on the Topless Z was different sizes of pipe..

 

Get a 1/2” bolt, machine one end down and thread 10mm x 1.25 pitch.
The other end, drill 11/32” and tap to 1/8” npt. Find a tire valve that has 1/8” npt and voila....your one way valve.

 

You could use a 10mm bolt, but by the time you drill 11/32 and tap, it will be too thin.

 

UH...I was kidding about having a machine shop!

 

Why did you put a metric nut in there?

 

I don’t kid when it comes to machine shop...






Ok, I do. Lol. Figured you had a lathe though.

 

Keeping everything metric 'cause everything else on these bikes is metric.

 

Fill it through the petcock. Shut the valve when there’s air in the tank.