Wobbly steering
Turbo Mini Forums

car is 90 Cooper S. 8.4 disks. bearings are ok, re-torqued em last week, i was pretty much standing on the tourque wrench to do it!!

its gotta be some kind of resonance... what else can it be?

tyres are fine, checked them a few tines, even had a good butchers when we had them on the balancer today.

Sooperdooperturbocooperexpertengineering!

Was with Ross today when my friendly tyre supplier for all my imports did the wheels, he held his hand over the tyres as he had them on thae balancer sto check for high spots and out of true etc, and they are fine, the rims spin true as well.

We also checked and tightened the rack to floor bolts on it last week just in case.

I noted that the back end sits a fair bit lower on the nearside corner perhaps 3/4 of an inch or more, and the front is very low.

Ross was going to have a go at lifting the low corner today, might help, I was thinking that if it has one low corner could do a bit fo sea sawing at high speed, unlikely but gripping at straws here.

Also if the front is so low might be case that the knuckles could have cut through the nylon sleeves and a metal on metal issue might result in some vibration, again unlikely and I would expect it to creat noise rather than steering shake.

Paul

steering SHAKE is rotational to the speed of the car at the frequency you are experiencing

the problem lies with rotational componets....

FULL STOP.

THINK AGAIN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

you seem pretty sure everything youve said is ok
as has been said before surely the next step has to be to try some different good driveshafts.

a knackered drive shaft can send a real bad judder through the hole car, as tom said see if theres any excessive play in them, and see if any of the loints are dry. it cant be that expensive or hard to get some good secondhand shafts, cannit?

and lastly stick with it and good luck

where abouts are you?

no longer a series, but still 1.3 turbo.

just one other idea

buckled hub?

are your wheels sitting in the center of your hub properly (jack up the car and spin the wheels and look to see if they look central)

no longer a series, but still 1.3 turbo.

guy at tyre place said something similar he said why dont they have anything to centre the wheel on the hub most modern cars have a lip on the disk so the centre of the wheel aligns with this and then the nuts hold it on, where as the mini centres just by the nuts, I know the metro drive flange centres the wheel on the flange with those sticky out bits (technical term not to hand :)

I have a rotten mini thirty I have pretty much broke, and I have suggested Ross takes the whole front drive assemblys from the pot joints out including hubs discs drive flanges etc and bangs them straight on his and see what happens, if shake goes then great then swap over his sooper dooper discs etc and problem is solved.

Paul

Are the drive flanges up tight to the discs? Are the inner faces of the drive flanges where they contact the inner race of the wheel bearings good? I have seen them wear a ridge on the drive flange before, then no matter how tight you do the hub nut up, they do not seat down properly onto the inner race of the brg. Are the steering arms bolts onto the hub tight? Are the drive flanges sitting down onto the disc face properly?

And one other thing that in the list above has not altered yet, your front dampers????? Try a set of NEW cheap ones (Gabriel Red Ryders are cheap but a good Heavy Duty damper, used to use them all the time as autograss shocks, £12 a piece or similar)

HAve you got a dial gauge and checked your new disks throw out?

MAy be worth moving them round 90degrees on your drive flanges, maybe even taking the flanges off and giving them a good clean where they but up to the disk