Wheel hop

[KaiserM715]

Procomp also offers traction bars for the Raptor that should help.

I know some guys have put traction bars on too. Might want to look into those with all the added power.

Traction bars are pretty well known for controlling wheel hop on leaf sprung vehicles, especially in the off-road world. I am not sure if anyone has come out with something specifically for the Raptor, however. You mentioned Wiz, I think his Pro-Comp unit was a for a generic F-150 (which if the leaf springs are the same length, not sure it would matter).

 

[Scottysspeedshop]

I here you I'm trying to do the same with my seat . I bet that was a big clunk lol.


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[pirate air]

Sometimes I wonder.....

You know the number one fix to eliminate shit breaking during wheel hop? The driver

Im not a fan of hennessey, I sure as hell don't wanna stick up for em but... I don't understand the finger pointing that somehow they should of made doing burnouts damage proof. In fact nothing about the 600 package said it improved upon the suspension. Sure, the increased hp made things worse, but a stock Raptor wheel hops bad enough to the point owners reported twisting the driveshaft in half. Maybe ford will replace the drive shaft for a Raptor owner once, but not over and over, and certainly not out of warranty. So couldn't we point the finger at ford for not doing enough r&d on burnout damage prevention just as easily as hennessey?

The Raptor wheel hops easily due to the three inch lift block accommodated by a soft leaf spring pack. When the axle "wraps", the pinion gear is climbing the ring gear, rotating the axle housing rather than rotating the ring gear/tires. The lift block provides added leverage for the climbing pinion gear against the already soft giving leaf spring pack. The axle housing continues to rotate untill the force is so great the tires spin instead. Once this happens the suspension un loads and the proccess starts over again causing sever wheel hop. Short of multi linking the rear axle housing and coiling suspension, you can avoid some of the wheel hop by either eliminate the block/leverage, with aftermarket springs, or use traction bars to fix the axle housing in an addition spot to keep it from rotating. Or do both, springs and bars.

It doesn't matter what Raptor suspension magician shop you take it to. There will never be a guarantee that the truck will be completely wheel hop free. Any form of automotive sport where the tires transmit the force used to accelerate the vehicle will experience wheel hop. Whether its caused by the suspension, tire sidewall, or both. A formula car, cup car, rock crawler, top fuel car, shifted cart, monster truck, whatever, all experience wheel hop at one time or another. Some obviously way more extreme then others. Its up to the drivers to control the throttle to keep things from breaking, wrecking, causing themselfs black outs or brain trauma . No matter how well its built, you still have to understand your throttle and use it accordingly.

I'd stick with the stock drive shaft in this case for two reasons. For one its meant to deflect and give a little before it breaks. It will absorb the shock loads during the wheel hop much like using a tow strap rather than a chain to recover a stuck vehicle. Two, keep the drive shaft the "weak link". It's the cheapest and easiest thing to replace, vs an axle shaft, ring and pinion, differential, or something in the t case or transmission that would/could break instead.

 

[bstoner59]

Good points Pirate! We were just talking about the stock driveshaft and how well they have stood up to the abuse. The guys from RPG and Outlaw both thought it would be a weak point of the truck and other than this, I don't believe there have been any issues.

 

[BigJ]

PA, very good points indeed.

But hold on a second... you're having a different conversation than I was (I think). Here's what the OP said Hennessey said "they say never had any issues." If that is an accurate quote, we can stop right there. You and I and probably 99% of everyone reading this *know* that's straight up BS blow off answer, and its a crap way to handle any situation, their fault or not.

Now, put that aside for a minute and consider what happens when Hen's history is brought up in other situations/threads/conversations. You can bet that discussion will end with supporters saying how that history is all in the past, and that they're a different company now. The supporter will go on to say that they've never had any problems but they are sure the new Hennessey will step up and take care of them should the need arise... sound familiar?

This is the first time I've seen all the new wonderful customer service claims made about Hennessey tested. Is the wheel hop their problem? Maybe, maybe not. But either way, there's no way in the world a customer service driven company would respond like they supposedly did. The answer given today sure sounds a lot like the answer they'd have given 5 years ago, and that's just not in keeping with their 'new and improved' promise.

For my part in all this, its that axe I'm grinding. And if that answer is misquoted or not the whole story, then by all means lets hear it and keep open minds.

 

[whisler151]

Here's what the OP said Hennessey said "they say never had any issues." If that is an accurate quote, we can stop right there. You and I and probably 99% of everyone reading this *know* that's straight up BS blow off answer, and its a crap way to handle any situation, their fault or not.

So you expect them to hold each vehicle they build and test it until they break something? The OP called and told them he had a broken yoke and drive shaft. They said (allegedly) that they have not had any such issues. They have made plenty of runs down the track and have not broken anything.

What issues have you personally had with Hennessy? Did you send them a Viper 10 years ago and get ripped off? I sure as hell wouldn't want people to base their opinion of me from 10 years ago.


Oh, here they are running a supercharged Raptor down the track...

 

[BigJ]

So you expect them to hold each vehicle they build and test it until they break something?

Nope.

I sure as hell wouldn't want people to base their opinion of me from 10 years ago.

As long as 'it' was done to someone else those 10 years ago, right?

Hey its all good. I see in another thread where the OP is going to get some tuning help from Hennessey, so that's cool.

And I'm with BIRD; it bugs me that Ford is going to fix this under warranty. If it was caused by driver error or Hennessey's poor planning, either way its going to cost you and me money in the long run.

 

[Outlaw Offroad]

I know there is alot of talk in this thread of whos responsible and what not, but the truth is this thread was started to find a solution.

The best way we have found to eliminate "or pretty damn close" with out four linking the truck, is by way of Deaver Rear Leaf Springs. Traction bars were not designed for trucks with as much travel as the Ford Raptor. Have you ever watched the rear cycle on the truck? Traction bars cycle in a ) pattern, leaf sprinds do NOT. The Raptor actually cycles more like: S (not as dramatic of course). So with that being said, the traction bars will only hurt you further. Keep them on your lifted HD or Super duty, those trucks dont use enough suspension travel to have the S effect in the spring.

 

[Scottysspeedshop]

I think that's a little off on your thinking. Say you buy a procharger from procharger and have it installed at your local dealer would you blame them for not testing the product or would you blame procharger or what if you installed it yourself what about whipple or vortech. These company's have been selling their bolt on to your stock vehicle products for years. Maybe it's fords fault for using crap springs and not testing enough. You see where I'm going with this. Any time you increase hp you should use common sense that you may be stressing the stock components a little more. I have been told the driveshaft is speed rated and if the damage was done during a burnout by the op it could have very well exceeded its rating and went boom again I am just speculating. So who do you call who's responsible Ford , Hennessey , procharger or driver error.




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[BigJ]

I think that's a little off on your thinking. Say you buy a procharger from procharger and have it installed at your local dealer would you blame them for not testing the product or would you blame procharger .what about whipple or vortech. These company's have been selling their bolt on to your stock vehicle products for years. Maybe it's fords fault for using crap springs and not testing enough. You see where I'm going with this. Any time you increase hp you should use common sense that you may be stressing the stock components a little more. I have been told the driveshaft is speed rated and if the damage was done during a burnout by the op it could have very well exceeded its rating and went boom again I am just speculating. So who do you call who's responsible Ford , Hennessey , procharger or driver error.

I have no argument with ya on any of that, however that's not really the point I was trying to make.

But Outlaw Raptor is right... this guy came here to get help, not listen to us fight about Hennessey. Truce?