FF1600 quirk

RMR · 18 Jun 2003, 07:51 (Ref:635240)

Hi all, Hoping someone has come across a problem i am having with my Vandiemen RF89. Recently I have tested and raced and in both day have experienced problems with a vibration on the rear left. It seems to happen after a few laps and doesnt really effect the car, just very uncomfy. It happens on slow and medium right handers, strangley not fast rights. It feels like a puncture or a really bad flat spot. I have changed to a new set of tyres, another upright with a good bearing went on, still the problem was there. Then I changed the shocks but it still exists. The only thing left is the drive itself, but what can it be? How can I sort it (easily

)

Cheers
Richard

JR Ewing · 18 Jun 2003, 11:28 (Ref:635398)

diff? bent driveshaft?

RMR · 18 Jun 2003, 11:32 (Ref:635404)

Hi JR,

Possibly the diff, obviously i will need to take it all apart, but will it be bearing or??? to be honest i wont know what im looking for

Barny · 18 Jun 2003, 12:43 (Ref:635466)

As it is only when cornering in one dicetion perhaps a UJ?

avsfan733 · 18 Jun 2003, 22:35 (Ref:636073)

did you change the wheel or just the tire?

RMR · 19 Jun 2003, 07:01 (Ref:636283)

The entire wheel. I think JR is on the right line. Trouble is i'm not sure what to look for if i were to strip the diff. I have the hewland manual/diagram but never done one before.
JR, you have a RF88, have you ever stripped the diff is it a big job? what shall I be looking for?

Cheers.

JR Ewing · 19 Jun 2003, 11:05 (Ref:636464)

Hmmm, not a particularly big job but what to look for is very difficult. I might try to swap the driveshafts etc. side to side first to see if the problem moves. If it doesn't, I'd whip the gearbox/diff off all in one and drop off it someone like John Pickford at Silverstone or Tony Wilson in Nottingham. He will rebuild it totally for you and I doubt you'd be looking at more than £200/£300. In fact, even if this isn't the problem, you could probably do with a rear end rebuild every few years anyway...

RMR · 19 Jun 2003, 13:02 (Ref:636584)

Cheers JR, was hoping you would post something like that. My Friend knows John so i may take that route. Good advice to, appreciate it.

Richard

flatbroke · 12 Feb 2004, 18:18 (Ref:872215)

Never swap drive shafts from side to side

shiny side up! · 12 Feb 2004, 20:54 (Ref:872382)

Quote:

Originally posted by flatbroke
Never swap drive shafts from side to side

SMART MAN!!!!!!!!!!!!!!!!!!

You don't want to switch driveshafts side to side unless you can make them rotate in the same direction they were rotating before (ie the inboard end becomes outboard, and vice-versa). Your driveshafts have a stress history from being run on one side all the time already, and switching to run them backward against their old stress history is just begging for a failure! You might get away with it, but not worth the risk in my book! It's not fun to tear a rear corner off the car with a broken drive/halfshaft...

JohnMiller · 16 Feb 2004, 09:12 (Ref:875493)

The idea was to see if the problem moved - not to run them forever like that.

4thgear · 16 Feb 2004, 09:48 (Ref:875521)

speedy reponse guys.

it was just for elimation purposes like John pointed out.

doesnt matter anyway as car got sold in october.

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