John Gibbons wrote:

Hello experts,

    Looking for suggestions on how to cool a 1 1/2 " diameter by 12 " hardened steel shaft to say - 50 degrees so as to be able to slip a gear on. Have heated the gear to 400 F and frozen the shaft but it is still a little too tight.
    Also what is the coating on that exhaust pipe that has been pictured lately and Paul the rotary anatomy picture was good, do you have a similar one for the various ports ?

Cheers,

John

I'll scrounge around for a port picture.

Paul Lamar

Try hitting up your local market for some dry ice.  Get enough to encase the shaft and don't be surprised when it rings like a bell as the shaft shrinks.  When the singing stops the shaft has reached the temp. of the dry ice.

Rick Girard
13B + LEZ

 
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