axel tramp

[CJH06L]

i find that when i dump it off the mark and get wheel spin 99% of the time the arse end bounces something shocking. does any1 know if this will clear up if i lower it?

[Djbarnstar]

What model is it?

[KCB50L]

i find that when i dump it off the mark and get wheel spin 99% of the time the arse end bounces something shocking. does any1 know if this will clear up if i lower it?

That would be no, My VZ has SSL's in it all round and it tramps like you wouldn't believe. The only real way to stop tramp in them is to replace the two cradle mount bushes and fit the Harrop Diff hat with revised rear diff mount.

[CJH06L]

What model is it?


its the 07 ve ss. does any1 who owns a ve have this problem?

[WildBHaviour]

Yeah i have the same issue as soon as the wheels loose traction they shake and bounce like Hell. Very annoying but i think i read somewhere on the forums that if you replace the rear void bushes it should help the problem but not 100% sure.
Anyone tried this mod????????

[GRUNTS]

i've fitted the harrop sport diff cover and pedders rear subrame mount bushes
to my VY, it still axle tramps sometimes but nowhere near as bad

[mmm]

:search:
have a look, has been covered before, answers to be found

[Luke_]

its the 07 ve ss. does any1 who owns a ve have this problem?
CJH06L, feel free to drop into our Penrith store, I can run you through a few options we have to significantly reduce axle-tramp.


See this link also:

Australian LS1 and Holden Forums (http://www.ls1.com.au/forum/showthread.php?t=102850)

Regards,
Luke

[CJH06L]

no worries. thanks heaps

[blowski]

Just drop em a little harder, more rev's. Or get some cheap tyres...
I know on my clubby they have275's on the rears and they grip like shit to a blanket. If i drop mine for a decent launch at bout 2-3k it tramps pritty bad, dial up to 4-4 n a half and it seams like just enough to get em spinning rather than trying to grab traction. Over that stage of spinning tyres now, to much damage to the car and damn tyres are 900 a pop and they aint last long

[FPVEATA]

yeah i found keep the revs up and it doesnt get any axle tramp at all. :)

[CJH06L]

that's actually not a bad idea. i guess i gotta ask this now... how do the clutches seem to hold up on the ve 6.0L. ever herd of damage by dumping it hard like that???

[Ron SS]

Contrary to what has been posted above, the rear cradle bushes do nothing to stop wheel tramp. I have them and it still tramps every time the rear wheels spin, especially on a wet road. GM has gone to the trouble of fitting different size axles to the similar Yank IRS cars to stop the tramp. Surprisingly this seems to work. Chasing tramp cures on a VE using polyurethane bushes does not seem to help. The weird positioning of the rear arms mean that there is a limit to putting in hard bushes in the lower and upper arms ...they will bind up if bush movement is limited due to their mounting location ...they do not all lie in the same plane. The rear cradle bushes are still a good idea for stopping the loose feeling from the rear in cornering, but do nothing for straight line tramp. Harrop tried to cure VE tramp and gave up due to the arm location points not being in a straight line. Hopefully Holden will let us know how to get these different diameter axles.

[nikola]

My VE ute axle traps really badly too, especially in the wet. I can't believe there's no solution though. Pretty poor from Holden.

[wagnman]

It's amazing that modern vehicles are built with such glaring flaws.

yeh sure the manufacturer would agrue that the vehicle should be driven in a manner that maintains traction, making axle tramp a non issue but there will always be situations where the vehicle looses rear end grip (say in the wet) and this will cause tramp which surely must create alot more damage to the diff etc.

Come on Holden (and Ford for that matter as the BA - FG's are just as bad) GET IT RIGHT!

I have tried everything on my VY to get rid of tramp and at best have been able to make it a little less. It has every bush in the rear end replaced with poly bushes, Harrop sports diff cover, KAAZ centre and heavy duty springs and shockies. it still bounces if I get the revs wrong. If it grip without spin, or spins the tyres hard it does not bounce but if it only spins a little bit it still tramps but all the gear I have had fitted seems to make the tramping less savage.

[fx160]

this may be way off the mark
but back in the days of having an HQ wagon they axle tramped realy bad the only thing that i found worked was a realy good set of shockies
i remember puting on a set of brand new munro shocks that i borowed off a mate
first burnout no axle tramp but after about the 3rd time it was all back
i fited a set of konie adjustable shocks and set them to there hardest seting and that seemed to do the trick it worked for as long as i kept the car
i do remember the konies costing about 4 times the price of normal shocks though

kev

[vyls1wa]

shouldnt really be loosing traction thought with the esp turned on even in the wet? atleast on the ve, Thought, with the 1 billion they spent surely they could have set the rear end up right. although i cant really say i've noticed it at all in my vy, might have to try one and take better notice

[nikola]

shouldnt really be loosing traction thought with the esp turned on even in the wet?

Even with traction control on, in the wet, it still spins up the wheels a little and tramps horribly on mine.


atleast on the ve, Thought, with the 1 billion they spent surely they could have set the rear end up right.

I know it's somewhat off topic but; This is the thing that amazes me most. But it's not just axle tramp, it's other even more obvious flaws. Like:

- the glove box which is designed so incredibly poorly that it never closes properly. How can they get something so simple so wrong?

- and, the handbrake which you can seriously hurt your fingers when lowering

- the cigarette lighter/charger which is positioned right in the middle of the storage space that when you have something plugged into it, it makes accesing all the contents inside almost impossible

- where the bonnet meets the grille, it doesn't align properly on any VE. Which means Holden didn't measure it properly or something. How can they get a panel so wrong?


These are such simple flaws that it boggles the mind how they can get them so wrong. What were they thinking??? :vpo:

[wagnman]

Even with traction control on, in the wet, it still spins up the wheels a little and tramps horribly on mine.



I know it's somewhat off topic but; This is the thing that amazes me most. But it's not just axle tramp, it's other even more obvious flaws. Like:

- the glove box which is designed so incredibly poorly that it never closes properly. How can they get something so simple so wrong?

- and, the handbrake which you can seriously hurt your fingers when lowering

- the cigarette lighter/charger which is positioned right in the middle of the storage space that when you have something plugged into it, it makes accesing all the contents inside almost impossible

- where the bonnet meets the grille, it doesn't align properly on any VE. Which means Holden didn't measure it properly or something. How can they get a panel so wrong?


These are such simple flaws that it boggles the mind how they can get them so wrong. What were they thinking??? :vpo:



Yeh i agree totally.

My VY aint perfect at all but it's not leaving my garage for a long time yet.

[Martin_D]

Axle Tramp is a function of the shock absorber not being good enough to control the spring. The stiffer the spring, the worse the tramp which is why aftermarket springs amplify the problem in most cases :)

Diff covers altering or improving axle tramp is a myth perpertrated by those that sell diff covers. In fact the aftermarket diff cover I used on my VX made the situation worse, as the cheap poorly located urethane bushes collapsed and fell out of it in a week. Lesson learned :lol:

[SirNemesis]

Axle Tramp is a function of the shock absorber not being good enough to control the spring. The stiffer the spring, the worse the tramp which is why aftermarket springs amplify the problem in most cases :)

Diff covers altering or improving axle tramp is a myth perpertrated by those that sell diff covers. In fact the aftermarket diff cover I used on my VX made the situation worse, as the cheap poorly located urethane bushes collapsed and fell out of it in a week. Lesson learned :lol:

Disagree mate. I changed nothing by the diff cover on my car and axle tramp is almost completely gone. Heavy springs + standard shocks aswell.

[Martin_D]

Thats fine, everyone has their own opinion :)
The diff cover doesnt directly act on the suspension, instead its fixed to the cradle. From an engineering viewpoint it can contribute little if at all to axle tramp. Playing with the unsprung parts of the car, reducing brake weight, using lightweight wheels, and increasing grip via improved tyres are the keys to controlling axle tramp.....which is why....stock sprung LS1 drag cars with 'Weldies' and soft sidewall slicks NEVER axle tramp. This is also why cars that do tramp are worse in the wet, lower grip you see :teach:

[ASSASIN]

I cure my axle tramp by punching 555rwhp through the driveline.
Never had an ounce of tramp since

[QNLOOK]

Haha i wish that would work for me, I have 660rwhp and flat changing from 1st to 2nd gets horrible axletramp till it finally breaks free and then frys the tyres.

[VZSSTT]

Went for a drive in OP's car today, Axle Tramp eliminated by keeping the revs up :driving: Goes hard nice buy there mate

[CJH06L]

Went for a drive in OP's car today, Axle Tramp eliminated by keeping the revs up :driving: Goes hard nice buy there mate

thanks mate.
yeah before all this i was dumping at approx 1.5k and tramp was shocking. now that we've had the car for a few weeks ive learnt to drive it a bit more and found that simply dumping at 2k has made the world of difference. im still going to try it with the harder and lower springs but at this point i cant complain...

btw harold_beh, ur car fkn rocks. its always been a bloody nice car but now its even better. thanks for the drive too.:goodjob:

[Muncha]

....soft sidewall slicks NEVER axle tramp.

Totally agree, i tried shocks in my VE but it still tramped bad on the street and the drags. As soon as i fitted slicks there wasn't any sign of axle tramp at all at the track no matter how hard i tried. I still don't have a cure for the street yet though.