DSS 800HP axles arrived today

[Jeff_oddo]

Can't wait to install them!

Sponsored

 

[Chameleon]

Beefy!

 

[Jeffy_2010]

Looks good! I went with the frpp shafts... Some times I think I should have went this route

 

[DrDing.Muscle]

Looks great! Congrats! How hard are these to install?

 

[Jeffy_2010]

I got no idea, had my shop install mine... Heard from others they aren't terrible do to tho

 

[gtlaw]

any idea why the shaft diameters are so different?

 

[Reds197]

any idea why the shaft diameters are so different?

This helps with wheel hop.

 

[dragonacc]

This helps with wheel hop.

That's what I've read too. This is from DSS's website and explains the concept a bit -

"Almost 3 years ago now one of our dealers Thomas Hendrix from Hendrix Engineering had asked us to make a set of axle with different diameters. the reason for his was to help with Wheel hop on certain cars. now this technology is not something new and it was actually created by both GM and Chrysler on SRT8's and Corvettes. Like those cars it works quite well. The way the system works is this, when the torque is applied to the rear wheels thru the drive train. the axles torsionally twist at a certain rate, what happens on cars with certain types of suspension is as they both wrap up at the same time they also release at the same time and cause the wheels to "HOP" with different diameter bars this "wrap up and release" happens at different times helping the wheels to spin. now on a street/strip cars this is a great thing but keep in mind like the factory ones it will have it limitations. What were actually doing here is making one axle stronger and one weaker (one big and one little says it all) so if your building a car that has up to 900Hp and want to eliminated the dreaded "HOP" we have designed this set of axles for you."


Looks like on the set for the Mustangs they just put extra weight in the middle of one bar. I'm just guessing, but instead of "twisting" at different rates the extra weight on one side just causes that axle to move at a slightly different speed when initially moving off the line.

I would like to know what the true breaking point for the 800 hp axles is. I suspect that it's higher than 800 hp (torque is what really snaps them), but by how much who knows. I'm using them on my car, but I should be well within the safety margin.

 

[rainier446]

Looks like on the set for the Mustangs they just put extra weight in the middle of one bar. I'm just guessing, but instead of "twisting" at different rates the extra weight on one side just causes that axle to move at a slightly different speed when initially moving off the line.

I don't think it's a different speed thing, the size difference changes the torsional constant...which is the part you said about "twisting". One is going to be quicker reacting to the torque than the other, which technically is a different speed as you said but it's more the case of the quickness in which one reacts to the "hop" compared to the other.

 

[dragonacc]

I don't think it's a different speed thing, the size difference changes the torsional constant...which is the part you said about "twisting". One is going to be quicker reacting to the torque than the other, which technically is a different speed as you said but it's more the case of the quickness in which one reacts to the "hop" compared to the other.

Yeah, I'm not an engineer so you're very likely right. I just assumed since the shaft was not a constant diameter the thin part next to the diff would still twist at the same rate on both sides. That's why I thought maybe it was a weight thing instead. I guess it's probably more complex than that though.

Thanks for the explanation.

Sponsored