Hi all...

Yesterday I test ran my G-62 with a homemade 2:1 belt drive using a 3W 32x12. The performance is quite acceptable as it swings the 32x12 at 4000rpm at full power, but it is the idle I donīt like. As soon as the engine goes below 2000rpm (on the prop, 4000rpm on engine) the whole assembly starts to shake like mad and the engine quits within a few seconds. When using the engine without the belt drive I can get a reliable idle at about 1500rpm.
The engine is hard mounted on aluminum standoffs and does not shake too bad without the belt drive.
The whole drive is built pretty much like the one Mick Reeves sells for the G-62, although the prop shaft is mounted below the cylinder. Like the Reeves unit there is no additional flywheel mounted on the engine and belt tensioning is accomplished by moving the prop shaft up and down using washers.

Do I have to convert the G-62 to electronic ignition to get this to work? Or will a steel flywheel mounted on the engine make a difference? Anyone using a belt drive care to enlighten me?

I have never heard that the people using the Toni Clark 2,8:1 drive for the G-38 have any problems with the idle..... is it just me?

Attached is a drawing of the general layout of the drive.