Harmonic balancer.
It fixed all the loose flywheel problems around here. This one was made with a smaller diameter pulley to slow down the pump & altenator.
This seems to address the CAUSE of the problem, rather than try to fix the symptoms.














































































It's not particularly cheap, but it has saved much more than its purchase price in grief.

Quote:

You could also do this, just grab yourself a Tilton 7" clutch and bolt it up.

If only it was as easy as it sounds, but can be done none the less.

Yep, the dowel is as you explained it.

And yes, balance is absolutely necessry, the dowels just help stop any radial movement of the flywheel on the crank.

Dowling is only extra insurance. Balancing is the best protection.

can you tell me more about the dowling. Is it just one dowl about 5mm dia between two of the bolts. A bit like the dowl in the camsharft
thanks olboy

Most Victorian Mini Sprints still run flywheels.

First make sure it is machined down to lightest you can get it.

Then when you get your bottom end balanced again get the machinist to dowel it for you. Should be good for about 10,000 rpm.

By the way, when you get it balanced also get them to do it with the clutch pressure plate fitted.

I wonder if you could set up a clutch on a flex plate and do away with the flywheel.

Nope

the block bolts directly to a engine plate, then through a uni joint vai to a diff.

May sound weird but thats how it is uaually done.

No flywheel
No Clutch
No Starter motor
No gears

Andrew

wouldn't they still need some sort of flywheel though

The speedway guys dont have flywheels. They are push starded elininating the need for a flywheel or drive plate, The also dont run gears its all opperated through the diff you are either in gear, or out of gear (no clutch).

Thats how the speedway guys do it.

Andrew.