I will past up a few pictures of the build. It started out as a 91 CR 250. Needed a crank so we put in a hot rod crank. The side plates are 1/4" aluminum. To handle is 3/16".
Direct drive. The sprocket bolts to the crank. The starter pulley actually bolts through the sprocket and into crank. Pull cord.... Squeeze trigger WFO and hold on