Flywheel - Rim Weight Reduction

Re: Flywheel - Rim Weight Reduction (B24)

Wed, 05 Jun 2013 08:59:46 GMT

Certainly looks like shipping is the killer. Maybe U.K. has something available.

Re: Flywheel - Rim Weight Reduction (Knightrous)

Tue, 04 Jun 2013 23:07:53 GMT

B24
Why not buy a 3s lightened wheel then have the holes altered? Safer and cheaper

A 3SGTE Fidanza flywheel is the same price as one for the 1MZFE (US$292.50 + US$127.50 shipping from MWR [US$420]). Unless of course you know a super secret place for <$200 ~4kg flywheels for 3S's " />

Re: Flywheel - Rim Weight Reduction (B24)

Tue, 04 Jun 2013 20:01:52 GMT

Why not buy a 3s lightened wheel then have the holes altered? Safer and cheaper

Flywheel - Rim Weight Reduction (Knightrous)

Tue, 04 Jun 2013 16:45:27 GMT

I'm looking to do a bit of weight reduction on the stock Toyota 1MZFE flywheel I have, which weighs a lot.

I've seen plenty advise to not lighten cast steel flywheels as it might cause the flywheel to develop a crack and/or shatter. Now from the research I had done into this previous, this was generally caused by doing weight reduction on flywheels using the skimming method, where you take some "excess" casting off the back side of the flywheel and neaten up the flywheels profile.

Like this flywheel.

However I cannot find much information on why you shouldn't do the weight reduction on the outer rim of the flywheel, like this flywheel.

From my guestimation and mengineering skills, the outer rim is where the most weight savings are and the least amount of material used for structural integrity of the flywheel itself. This should be safe to CNC mill off and then re-balance, but I wanted to see if anyone else has done something similar or worked with someone who has done it.

I'd love to just drop $500 on a Fidanza 4kg 1MZFE flywheel, but $500 is a lot of cash I could drop on something better (getting the conversion finished!).