Puff The Magic Wagon!

iTrader: (2)

As it says really!

@ TOTB I was swapping 100ths with John Felstead in his RA until he started to get the hang of the DCCD, then he went up by a few seconds

There's not a great deal more I can do suspension-wise to improve the handling, so wondering what I need to do to get DCCD in.

Anyone?

CustomScoobyIOM

Gearbox with DCCD in it
Dashboard
DCCD Control Box
All associated wiring

Off the top of my head.

Anyone confirm or deny?

David_Wallis

Dont need a gearbox with dccd in it.. could be retro fitted.

Dont need dashboard either.. switch alone would be fine.

David

Claudius

Or you could just get a 35/65 LSD for your car

carlos_hiraoka

Claude, the DCCD in "open position" IIRC works 35:65 (or 33:66) in other words like a Cusco Tarmac type LSD.

Carlos H.

Claudius

DCCD has a 35/65 torque distribution at all times. What's your point?

MorayMackenzie

"DCCD has a 35/65 torque distribution at all times. What's your point?"

No it doesn't.

Wind the diff control all the way forward and you get pretty much 50:50 distribution and practically no differential action.

The epicyclic differential gearing does have a natural 2/3 to 1/3 torque distribution, however the DCCD unit consists of these differential gears AND the electronicaly adjustable limited slip coupling.

Fat Boy

Retro fitting is easier as you wont need to change rear diff to R180, plus the bigger driveshafts, better rear brakes etc that go with it. You can keep the standard R160 back end, but with more torque going to the rear end it might be too much for it. Also John's RA and p1's etc have plated rear diffs, plus I would also stick a torsen type front diff in while the box is off - good compromise for a road/track car as opposed to a competition car. By keeping the original box I think that the front and rear diff ratios are ok however

I looked at all this for my P1, but still havent got round to it yet - new baby, new job....

My list was Dccd diff, roller switch for transmission tunnel, handbrake switch - works off the handbrake light on the dash going on and opens the diff when the handbrake is on-, diff ecu, dashboard lights - although it wouldn't be hard to make up a knocklink type box to display the locking ratio splits instead, plus all the wiring. I was going to try to source a Type R box and rear end to do it all at once and was quoted between 1k and 2k for various different sources.

Rallycolin , Ian gwynne at bill gwynnes are good starting points as they would chuck away some of this stuff when building rally cars.