Race Engine Forum UK

Hi all,

Im in the process of making a steel flywheel, now Guy, in this post: viewtopic.php?f=3&t=570 you say not to go any thinner than 10-12mm on the cast flywheels

Any ideas on how thin i can take a steel flywheel??

Thanks Tom

Thats a very complicated question. Depends on what material, what clutch, particularly if your design has stress risers.. how thick of a ring gear you're going to use.. if you could provide some of that information it would be helpful!

-Jason Miller

Clutch is a non sprung 180mm paddle clutch.
Material of flywheel, steel, not sure of grade tho
Ring gear will be the standard one off the old flywheel, at a guess id say 10mm thick.

Thinnest part on the old flywheel is 8.5mm, thats where it bolts on to the crank

This may help some,

GC

thank you Guy,

helps a lot, hopefully I'll get all the turning finished next weekend, that's if my back is up to it, 2 days bent over my lathe wasn't a good idea..

well here it is now the turning is finished



now the fun begins with working out/machining the crank mounting holes. hopefully the pressure plate mounting holes should be abit easier

Figuring out the bolt pattern could be a bear. If you want to do it on your own, then don't read any further. If you like to do things the easy way:

Guy, I hope you don't mind me posting a link. Its to my website, I didn't want to eat up your bandwidth with a 2mb jpg or pdf.

LINKS STRICTLY WITH MY PERMISSION PLEASE RE-READ SITE PROTOCOLS - GC - I HAVE UPLOADED THE KEY INFO VERY SIMPLY AS A GIF USING MS PAINT.

Thanks alot for the help pastaroni34.

Will have to get the rotary table back out (only just put it away)

Thanks again. Tom