Construction is 1/8" aircraft ply, 1/16" aircraft ply, 3/32" cross grained balsa epoxied with 2 oz glass cloth between the layers

Rubber stock is from inner tube of a lawn tractor wheel purchased at local ACE Hardware. Cuts easily with razor knife.

Note that rubber must be thoroughly cleaned with rubbing alcohol to remove any soap the manufacturer used to release the part from the mold. When this is done correctly, the rubber will adhere with regular CA glue to rubber tearing strength.

Note the weight of the nearly finished mount is about 3 ozs....quite acceptable for this size engine

MattK