Axle weight?

[Nmbr1GMfan]

These things just seem awful heavy, I may have to call an axle company tomorrow to check weights.

[David Lee]

Originally Posted by Nmbr1GMfan

These things just seem awful heavy, I may have to call an axle company tomorrow to check weights.

that is in 1/10 of a pound of my moser's . so it right in line.

[FED 387]

Rifle drilling and scalloped flanges will result in a 17-25% weight reduction over a non lightened axle--- also keep in mind that a one pound reduction in axle weight is like a 15-17 pound weight reduction that the engine sees it has to try to overcome--FED 387

[Nmbr1GMfan]

Thanks for the replies guys. I did call Strange today and in order for them to get me a side by side comparison they need the length of my axle, I'll get it and try to call back tomorrow.

[voltdr]

I doubt very much that you will see any decrease in ET with a lighter axle........
Theory and real life sometimes differ.
Dan

[Dissident]

In the case of wanting (needing) to accelerate all the whirlygigs in a racecar, theory and practicum parallel as the issue is the classic application of F = ma. Force = mass x acceleration.



A rifle drilled axle doesn't help much (if at all) because the concentration of mass at the radius of gyration is not centered on the axle shaft itself. And tires are heavy and wheels might be light, but the concentration of mass is somewhat past the rim. Lots of money is spent on things that don't give a bang for the bucks spent.


Regards,
HB2
Dissident

[Mike Pearson]

the only real benefit to the light weight axles is if you need to get some weight off of the car to get closer to the minimum weight for the class then this will help in that area and possibly show some improvement in performance from the overall weight reduction. If you have to buy some axles anyway and you need to reduce weight then get the gun drilled and light flange axles. If not then performance gains will be minute.

[MikeMoller]

Originally Posted by FED 387

Rifle drilling and scalloped flanges will result in a 17-25% weight reduction over a non lightened axle--- also keep in mind that a one pound reduction in axle weight is like a 15-17 pound weight reduction that the engine sees it has to try to overcome--FED 387

Sounds like quite a bit, curious how you arrive at those amounts?

[Nmbr1GMfan]

Originally Posted by MikeMoller

Sounds like quite a bit, curious how you arrive at those amounts?

Mike, I found lots of info on this subject, as I've been looking. This particular article states that a Mark Williams superlite axle is 8lbs lighter than mine, thats a 16lb difference in axles! Seems like a lot to me.
https://www.markwilliams.com/aerp3.html

[FED 387]

A cubic inch of steel weighs .283 pounds plus add in all the material in the flange multiply that by 2 and you get a number probably about 4-6pounds per side depending on axle length and diameter