Re: Van Norman #12 Milling Machine

In a message dated 01/23/2000 8:26:26 PM Hawaiian Standard Time,
jmelson@... writes:

<< Unfortunately, those would be BIG gas springs. Maybe, one could come up
with old oleo struts from aircraft landing gear. That would be about the
right size.

Jon

>>

Jon,

How do they keep the force more or less constant on those gas springs? I
also considered pneumatic cylinders. However, like a regular spring, the rate
changes depending on where in the travel you are. I considered a regulator
but then you need a compressor to admit when low and the regulator to dump
when over pressure. Maybe if we got a really large cylinder and ran low
pressure.....

Peter
THRD, Inc.