Limited slip diff (live axle)

[Captainbilos]

Has anyone fiited the limited slip diff (supplied by caterham) to a live axle car?

Is it a worth while upgrade or am I just talking pants?

 

Paul

[groutledge]

Yes I have, It's a bit early to tell yet as I haven't had chance to try it on track yet and I'm still only running a 100bhp crossflow at the moment. I must admit I didn't buy it new I got it second hand complete with axle. It'squite nice though, it seems to be a bit more steerable on the throttle although this may just be my imagination.

 

 

A very reliable source tells me to investigate a Triumph TR7 axle unit apparently it the same as the Ital but has limited slip diff already. ( I think you need the auto version ). I may be talking bollocks but you could ask a BL specialist they should know.

 

Apart from all this they do seem a bit steep new. I'd keep checking the for sale ads on theis site that's where i picked mine up.

Graham

[deanteam]

If the car is used for competition or driven quickly at track days the LSD will be very noticable. We find that without, the inside wheel lifts enough to allow wheel spin and therefore loss of speed. Are there any opinions of which type is best for the live axle, torsen gear or plate? I have read from these pages that some racing cars are being switched from gear to plate, what are the pros and cons for the live axle?

[tgracing]

The axle on my classic (Academy 2000) car is a reinforced Ital axle. The shafts are uprated and the bearings are tack welded on. The original Ital axles were prone to failure if thrashed as race/track day cars.

 

I doubt a TR7 axle from a std car would be reinforced, so I'd be careful.

Cheers

 

Davebo

C7 CAR

[Peter Carmichael]

The problem with the torque sensing gear (AP Suretrak) diff was that it relies on some torque being maintained on both wheels. When a wheel gets properly in the air it acts like an open diff and the airborne wheel spins up.

 

This was a problem with approaching 200bhp in the race cars, with big slicks, because when the wheel again made contact with terra firma it was sending a huge shockload up the drivetrain, tearing the teeth off fifth gear.

 

There is now a stronger fifth gear, but the shock loads will be going somewhere nasty anyway. The plate type never goes open.

[tgracing]

I used to have an Audi quattro with a Torsen diff. The centre diff only worked if you had some throttle on. I.e. if the car was free-wheeling the drive went back to the 50:50 split.

 

I spent ages telling people not to back off when they got a bit ginger in a bend.

 

Cheers

 

Davebo

C7 CAR

[deanteam]

Peter,

If the plate type only starts to slip (partally open) at a pre-set load, will there not be a tendency for these to promote initial understeer more than the gear type? As we have not got 200bhp to play with, gear stripping is less of a concern. Are there any major advantages/disadvantages of Quaiffe vrs Suretrac?

Has anyone used an alloy diff housing for the Ford live axle?

 

 

 

Geoff

[Captainbilos]

Davebo,

 

Are all Ital axles on VX classic's uprated or was this only an option on the race spec cars?

 

What BHP limit is the uprated axle designed to take? (excuse my stupidity if this is not the correct terminology)

 

Paul.