Re: Thoughts on lightened ring gears?
 

If more folks studied rotational INERTIA more than reading the hype of suppliers of lightweight parts, they would save lots more money. IF one spent more time on reducing the rotational inertia of the flywheel /clutch/converter AND the wheels/tires then there would be a more effective approach. Looking under the streetlight for low hanging performance fruit is cheaper and involves more common sense.Out in the shadows gets more expensive and much more questionable in results.;)
Regards to All that like this kind of stuff,:D
HB2:)
Dissident

Re: Thoughts on lightened ring gears?
 

Yes, nothing in the trans, or rear end, is large enough diameter to have a measurable effect on inertia to show up on your time slip. Hard to imagine how low the hp would be required to see anything on the time slip. Wish I had the time & money back I wasted on parts & track rentals testing, because “there HAS to be something there!”

Re: Thoughts on lightened ring gears?
 

You are correct, no observable performance improvement from lightweight rearend parts. On the other hand, reduction in weight and diameter of flywheel and clutch made huge performance improvements.

Re: Thoughts on lightened ring gears?
 

Just remember that the only things turning engine RPM (more or less) is the driveshaft, companion flange and pinion gear.

Anything that turns engine speed has to be deaccelerated and accelerated numinous times depending on how many forward gears you have, which will result in a much greater benifit

If your finish line RPM is 8500 and you use a 5.86 rear gear everything to the rear of the pinion gear is turning 1450 RPM.

Whatever your tach says just divide by 5.86 to get rotational speeds all the way down the track and best of all it only has to be accelerated once.

Might be very hard to establish a base line.

Just my 2 cents and something to think about.

Re: Thoughts on lightened ring gears?
 

Opportunity to place that weight above the suspension.
Benefitting traction or making car lighter for class.

Re: Thoughts on lightened ring gears?
 

Wow ! Dan posted something that almost everyone can agree on !!

Re: Thoughts on lightened ring gears?
 

OK, so lightweight driveline components don't provide any performance gain. But they still look really cool, all shiny and machined and lightweight and different. And we spend a ton of money on them, which automatically makes them cooler than regular stuff. And we get the excitement of ordering with the credit card, and then the anticipation of waiting for UPS to bring them in colorful boxes. And everybody else has them, so we have to have them too, just to keep up. And it's really fun to name-drop the names of the manufacturers, in conversation in the staging lanes or at the trailer. They still make our wife mad (which is good), because they represent race car expense (not kitchen remodeling expense). And finally, we just somehow FEEL faster with an aluminum spool, bolt-through differential carrier and 40-spline, gun-drilled axles, don't we? Just lookin' for a silver lining here...

Re: Thoughts on lightened ring gears?
 

I've always used this math equation..

$$$$ SPENT = E.T. IMPROVEMENT

What is the E.T. IMPROVEMENT for each dollar spent....

Re: Thoughts on lightened ring gears?
 

lol

Re: Thoughts on lightened ring gears?
 

Stick cars usually run pro or standard gears?