Altering final drive ratio.
Altering final drive ratio.
Author
Discussion

washy

Original Poster:

950 posts

298 months

Tuesday 18th May 2004
quotequote all
Anyone here changed the final drive ratio of a Cerb? I'm considering this for my Cerb. I figure having a car geared for 190mph+ is a bit daft but gear that down to say 170/175mph max at the final drive, thus bringing all gears down a bit, should improve acceleration?! I have no problem with traction in lower gears so I can't see a downside to this. Only upside in more acceleration out of corners.

Thoughts anyone? Would I have to replace the whole hydratrak or is there room for adjustment in there? There must still be a crown and pinion somewhere in there right?

Washy

davidd

6,661 posts

306 months

Tuesday 18th May 2004
quotequote all
Interestng idea, you could try it on smaller wheels

But seriously, I thought the hydratrack was fluid based (might be talking utter shite here) so you'd have to make sure you could get it back together properly.

D

joospeed

4,473 posts

300 months

Wednesday 19th May 2004
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you ned to get on to douglas valley breakers and get the diff from the tuscan or cerbera sp6 then .. slightly lower ratio.

shpub

8,507 posts

294 months

Wednesday 19th May 2004
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You might want to download one of the car acceleration software poackages that will produce acceleration curves for different bhp and gear ratios. The name CarTEST comes to mind. You can change wheel sizes, diff ratios etc and see how it affects the accelaeration. Not 100% accurate but the relative differences are usually spot on.

Used it to evaluate changing the diff on my 520 but came to the conclusion that it made little difference. Worth playing with before spending a lot of money.