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-   -   Lighter wheels = any E.T reduction? (https://classracer.com/classforum/showthread.php?t=70685)

Steve Polhill 08-23-2018 10:24 AM

Re: Lighter wheels = any E.T reduction?
 
Quote:

Originally Posted by Bob Mulry (Post 569858)
The further away from the centerline of rotation the greater benefit of rotating weight reduction..

Remove 1 pound of rotating weight from the OD of the flywheel vs. a 1 pound reduction from gun drilled axles.....

It's called moment of inertia.

Just sayin'

I was just about to say exactly that. The further away from the center of rotation the greater the benefit. Easy way of testing this is to hold a ten pound weight in your hand , and then put that same weight at the end of a 1 foot rod, grab the opposite end of the rod and try to hold it up.

Ed Wright 08-23-2018 05:42 PM

Re: Lighter wheels = any E.T reduction?
 
But, it HAS to be worth something, right?

Not the very first place I would spend money.

But, we all have light wheels.

Coleydog 08-23-2018 08:30 PM

Re: Lighter wheels = any E.T reduction?
 
Think of it another way, which car will accerate faster, one with a 12/32/15 tire or a 16/32/15 tire? It takes more HP to turn that big tire (heavier) the same speed as the little one, or how long does it take you to carry 10 lbs 100 feet? Then 100lbs 100 feet.

Ed Wright 08-23-2018 09:10 PM

Re: Lighter wheels = any E.T reduction?
 
Think about A-B-A testing it during a track rental. I did with a 13 second Jr Stocker. Wished I had spent that money someplace else. Who would buy heavy wheels today?
I doubt anybody. Lots of light wheels available now. Higher hp cars will see less than my old 13 second 265" '56 Chevy.

One of those things that just HAS to help, right?
I would not BS myself into thinking it's a big deal.


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