David010567

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It's hard to tell to tell how much these rubber doohickeys are going to squeeze up but it's going to be close with the spinner / cowl clearance. Might need a couple of washers, might not.

The firewall on the airplane is 1/4" thick. We need at least 1/2" of meat for the isolators so I made a new sub-firewall from 1/4" plywood with 3/4" diameter holes to accept the Vibra-Loc isolators.