monty conrod alternatives

[montynut]

I have 2 H6-360 engines in the shed both are original, I know the full history of one and both have the large motoplat flywheel maybe the H6 you have has had a replacement put on at some time as it is not unusual.

The VB250 is the only centre port engine with an internal rotor ignition as far as I know. The VE, VF & VG 250s went back to external rotor to compensate for a lighter crank.

[montman]

Montnut you could be right on the H6 it might in its history have had a replacement flywheel.
The lighter 250 flywheel i have is a spare one so over the next few days i will have a look at my 250ve and 250vf flywheels that are on the bikes as it has been a long time since i have looked at them.The 250 1976 flywheel does have a different part number to the ve and vf so it could be they changed from 1979 and just that i have not noticed.