Thanks for the comments. Its a modified version of Bob Shores design, many changes are thanks to Chuck Kuhn. Don Grimm helped sort out some problems. 180 degree crank and knuckle head valve train. I think the 180 degree crank really helps with vibrations. I have grown to like onboard electric start. At shows I put a start button on a long wire near the front edge of the table. Kids really like to start it, their faces light up and some keep coming back to give it another go. Adults enjoy it too.
The water pump is to Bob Shores design and is a basic gear pump, it moves the coolant really well. Its for display with no plans to have it drive anything at the moment.