For the life of me, I can't remember which is better! I want to say aluminum is better. Is this right?

 

in my opinion chromoly is better
chromoly steel is best


aluminum can warp

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by irev210 &raquo;</TD></TR><TR><TD CLASS="quote">in my opinion chromoly is better
chromoly steel is best


aluminum can warp
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It's open to debate. I like alum flywheels. They're lighter and usually cheaper. I've yet to see one warp. I'd look for whichever you can find that cheapest and around the weight you want.

 

That's exactly why I like chrommoly. They aren't as light as aluminum and still usable on the street. You don't have to keep it over 3k all the time.

 

I would go for the Chrommoly Steel,,becous it's a safer choice. Less chance for it to warp. I work with diffrent kind of metals. So i know what i would go with as a person.

 

3k all the time?!? I wonder if you've ever used an aluminum flywheel.

...and this notion that somwhere there's a scrapyard full of warped aluminum flywheels waiting to be recycled into coke cans...it's way too funny.

Chromoly shatters at it's limit. How could that possibly be a safer choice?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TimoneX &raquo;</TD></TR><TR><TD CLASS="quote">3k all the time?!? I wonder if you've ever used an aluminum flywheel.

...and this notion that somwhere there's a scrapyard full of warped aluminum flywheels waiting to be recycled into coke cans...it's way too funny.

Chromoly shatters at it's limit. How could that possibly be a safer choice?

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exedy for example tests their flywheels to 11k RPM, and they mill the ring gear on the flywheel. A common problem with aluminum is that the ring gear can fly off because the 2 different metals and the different expantion rates of metal. Alum expands at a different rate then the ring gear which can cause it to fly off.

If you look at every major manufacture that sells a flywheel/clutch high performance kit, they use chromoly

 

Least somebody FINALLY came up with an argument that makes sense. If you look at the design of a Fidanza aluminum flywheel, which myself and many many others use, I don't think you'll walk away with some great fear of impending doom. They're very well constructed and I personally have no fear whatsoever of my flywheel coming apart at or before my 9300rpm redline. Everyone must make their own choices of course, but I think there's a bunch of misinformation flying around on this topic. I consider my Fidanza fly/Action segmented kevlar clutch combination high performance and street friendly. If Exedy and others choose to make their flywheels out of chromoly, more power to them, I'll stick to the cheaper lighter Fidanza I'm using now.

 

thanks for the help guys!