This is the plug for the primary belt drive cover. Both pieces will be laid up with carbon fibre cloth >

Jumping ahead a bit here, these are the finished parts >

Using an electronic gram scale to help balance each flywheel. I use a long ground shaft resting on the wheel balancer, and a counterweight calculated to give a balance factor of 55% >

The flywheels are short stroke Sportster from Truett and Osborne. The (9) 1/2" holes are drilled about .875" deep >

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