2 replies to this topic

[Innovator]

I would like advice on differential selection for a well developed tarmac rally car and tarmac hill climb saloon car (low C of G, wide based double wishbone suspension, front mid engined).

Due to the twisty nature of hill climbs my thoughts are for a diff that is open on the over run or coast side. The vehicle will also see road use so a diff with gentle operation is prefferred.

My thoughts are for a torque biasing diff such as a Quaife, but concerns of potential wheel spin if I lift a wheel.

The other thought is for a plate diff with 80 degree coast, but will I still have one wheel spin if I run with low preload?

What about a viscous?

Anybody have any experience of the Emco unit?

Any advice or suggestions or links to further info would be appreciated.

Thank you

John Beardmore

[JwS]

There is alot to be said for a locked diff, it apparently works better than you would expect in alot of situations. One of Mark Donahue's unfair advantages..
That said, I like the Torsen, (Quaif) seems to work well in alot of situations.
JwS

[Scoots]

I like the Torsen, but I don't do hillclimbs.