Al Gietzen wrote:

I think the Barry's you have are Neoprene Al. The old Barry mounts were

rubber

so you had to order a 22003 instead of a 22002. Neoprene is stronger than

rubber.

Yes, I have the neoprene.  Yes it is stronger, but I think slightly less
effective as a damper.  Probably not an issue.

There should be a steel tube bonded through the center of these mounts.
Is there not? If the hole in the steel tube is about .5 inch inch diameter
they are Barry 22002.

Yes, the inner steel tube is bonded, and is .532 i.d. for a 1/2" bolt.  I'm
not familiar with the Barry 22002, so they very well could be the same
thing.

you are not planing on using these in a Lycoming type mount are you?

No.  I'm planning to use them with the mounting brackets that Atkins sells
that are 3/8" aluminum, and load the mount bushing radially.  The Barry
bushing is designed for a 3/8" load bearing member, and for radial or axial
loading.  I am replacing Atkins bushing which have tapered neoprene pieces
going into nicely machined aluminum recepticle.  The inner radius of the
elastomer is only 1/8" larger than the 1/2" bolt near the center, andthey
are very stiff, and designed more for axial loading.  The Barry mount will
give better vibration damping, but may also sag a bit more with time.

Al

They need a 1/2 inch plate Al. Not 3/8 and the load rating radial is only
about 3/4 of what it is axially. What load rating did you buy?

Paul Lamar
 
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