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Clutch plate dowels
Posted: Tue Jan 24, 2023 7:06 am
by marsbar
Apologies if this is a repeat question - I have searched the forum but not seen anything……
Had my flywheel lightened and getting new holes drill for fixing the smaller SD1 clutch plate - do I need the dowels or will the 6 bolts be enough?
Thanks
Chris
Re: Clutch plate dowels
Posted: Fri Jan 27, 2023 3:34 pm
by SuperV8
marsbar wrote: ↑Tue Jan 24, 2023 7:06 am
Apologies if this is a repeat question - I have searched the forum but not seen anything……
Had my flywheel lightened and getting new holes drill for fixing the smaller SD1 clutch plate - do I need the dowels or will the 6 bolts be enough?
Thanks
Chris
Dowels are for precise location of your clutch plate.
Bolt holes have a relatively large clearance that is not close enough to rely on for accurate location.
Re: Clutch plate dowels
Posted: Mon Jan 30, 2023 7:40 am
by jp928
Recently had my flywheel cleaned up - they couldnt get the dowels out, so they got planed off. No vibration issues to 3000rpm so far.
jp 73 P6B S
Re: Clutch plate dowels
Posted: Mon Jan 30, 2023 11:21 am
by SuperV8
jp928 wrote: ↑Mon Jan 30, 2023 7:40 am
Recently had my flywheel cleaned up - they couldnt get the dowels out, so they got planed off. No vibration issues to 3000rpm so far.
jp 73 P6B S
The force of any rotational imbalance is calculated with the square of the RPM - meaning doubling the RPM will quadruple the out of balance force.
So out of balance forces get very much worse at higher RPM's
If it's going in a tractor of Landrover probably ok? - if the engine is in a road car/sports car I would want dowels for my clutch plate and the assembly balanced following machining.
Re: Clutch plate dowels
Posted: Fri Feb 03, 2023 10:22 am
by marsbar
Thanks all for the helpful answers