Paul,
I have a bed type mount from Lancair that uses the larger 3-1/4" dia. Lord mount.  Hole size is approx. 2".  The largest dia. available from McMaster Carr appears to be too small.  Do you know of any other sources for a "reasonably priced" mount?  I have exhausted all my sources. Mark

Get the Barry Controls catalog called "Engineered Solutions for Controlling 
Shock and Vibration".  On page 57 they sell neoprene rubber blocks in the sizes 
you need. 3.15 diameter up to 5 inches high roughly in 1/4 inch increments.
The hole diameter is .83 inches. If you freeze it you might be able to bore
it out to two inches on a lathe. 

Barry Controls 1 (800) 227 7962 or search for their web site.

The other thing you can do is get some 1/8 inch thick silicone rubber sheet
from McMaster or AC spruce and cut out a bunch of rubber washers and glue
them together with red RTV. It is working for Chuck Dunlap

Paul Lamar
 
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