Technical > Spud Miller's Cave

Setting Hi-speed bypass

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msundstrom:
Hi Spud,
If I need to set my Hi-speed in the 120's psi but my air pressure source is maxed at 110 psi, what is my alternative source?
Thanks
Mark S

Paul New:
CO2 bottle is what I use at the track

Spud Miller:

 Yup, CO2 or nitrogen works great. If you don't have a bottle of some kind of gas around to use, shim it one shim at a time and write down the pressure increase for each until you get to your max available air pressure. Then figure how much gain you're getting per shim (it won't be perfectly linear, but close). Then project how many shims it'll take to get where you need to be. Extrapolation :) You'll be within a few pounds.

 Spud

msundstrom:
 Thanks a lot guys. 

Paul New:
Oh yes Nitrogen would be a better option I just have CO2 onboard for my shifter

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