Wheel Hop

[candyman]

Has anyone had this problem on a high hp ke70???

 

[LittleRedSpirit]

Ive never had tramp from a ke chassis but I never had more than 125 whp. It would just sit still and spin nicely. What is your suspension system?

[coln72]

My KE35 used to axle tramp bad, but I was running a 225 wide rear tyre. My KE20 never really axle tramped, even with a similar engine set up and tyre size.

[candyman]

I have a link suspension set up an the rubber bushes were replaced with polyurethane,I also have a Detroit locker in a m75 diff with 235 17" tyres at the rear

 

[altezzaclub]

Sounds like the springs are too stiff for the shocks to control. Slap in some softer springs and try it, then a different set of shocks and see if it still does it.

 

Diff head angle also has a role to play I think, it needs to start below horizontal and screw itself up to level under power.

[7000rpm]

On a similar note, i found my ke70 rear hopping when going from flat out in 3rd, back to second under brakes on the track.

 

Although all bushes need replacing, i dare say what you are advising Altezzaclub is the issue i have. Falcon spring on stock shockies

[candyman]

My original springs were quite soft so I tried replacing it with stiffer springs but still no good, its just on the launch or on 2nd when trying to get traction that its a pain in the ass but if you just wana have fun and let it spin through all the gears then its all good

[candyman]

Didn't try shocks as yet but it looks like the only thing left to try

 

 

[altezzaclub]

Didn't try shocks as yet but it looks like the only thing left to try

 

A black art, one that I don't know enough about.

 

Talk to as many guys in the pits as you can and find someone who builds shocks, I reckon the chance of best outcome from an off-the-shelf unit is pretty slim. We are lining up Murray Cootes for the next rally car, I think MCA is the top of the list for motorsport currently.

[candyman]

Thanks for the help guys,will keep you posted