Slippy diff required....Open diff currently
Discussion
Ive been pushing my 150SV to try and find the traction limit, and so far have not found it.
Did the Dunsfold day yesterday and was amazed just how much grip the 888R's have in very wet conditions.
However, the donut area was no fun at all.
I want to be able to get the rear mobile at will, and it seems like a slippy diff is the answer.
As I dont track it much (if at all), it would seem the Quaife ATB is the best option, versus the Titan for full LSD affect.
Ive read pretty much the entire internet about this today......
Whats the PH view ?
Did the Dunsfold day yesterday and was amazed just how much grip the 888R's have in very wet conditions.
However, the donut area was no fun at all.
I want to be able to get the rear mobile at will, and it seems like a slippy diff is the answer.
As I dont track it much (if at all), it would seem the Quaife ATB is the best option, versus the Titan for full LSD affect.
Ive read pretty much the entire internet about this today......
Whats the PH view ?
Edited by Turn7 on Sunday 12th May 20:10
A limited slip differential will help spread the drive across both wheels and allow you to break traction, rather than just spinning up one wheel. If you are not serious about track, then ATB would be ideal as they give the best of a LSD and open diff, if you keep the wheels on the ground.
Edited by DCL on Sunday 12th May 20:00
My thinking exactly tbh.
I have read some of your responses on similar threads, and I understand the cocking a wheel thing - I just dont think Ive ever achieved that yet, so the Quaife does seem sensible.
Also, Ive read that the true Slippers can catch you out on occasion, and I dont want uncertainty of that possibility.
Id just like to get the rear out when I felt like it, without dying in a horrible fireball of death......
I have read some of your responses on similar threads, and I understand the cocking a wheel thing - I just dont think Ive ever achieved that yet, so the Quaife does seem sensible.
Also, Ive read that the true Slippers can catch you out on occasion, and I dont want uncertainty of that possibility.
Id just like to get the rear out when I felt like it, without dying in a horrible fireball of death......
Turn7 said:
My thinking exactly tbh.
I have read some of your responses on similar threads, and I understand the cocking a wheel thing - I just dont think Ive ever achieved that yet, so the Quaife does seem sensible.
Also, Ive read that the true Slippers can catch you out on occasion, and I dont want uncertainty of that possibility.
Id just like to get the rear out when I felt like it, without dying in a horrible fireball of death......
However, the Titan option does allow you to have different ramp angles on both the acceleration and deceleration side of the diff, which along with setting the preload, gives you a lot of choice as to how "aggressive" or not the locking action is and also how it behaves on a closed throttle going into corners.I have read some of your responses on similar threads, and I understand the cocking a wheel thing - I just dont think Ive ever achieved that yet, so the Quaife does seem sensible.
Also, Ive read that the true Slippers can catch you out on occasion, and I dont want uncertainty of that possibility.
Id just like to get the rear out when I felt like it, without dying in a horrible fireball of death......
I have the standard Caterham Quaife in mine (Roadsport 140) and I've done quite a few trackdays in it and a lot of road miles and it's been great.
When you're on the limit, you can easily manage the grip on the throttle. So in tight corners you can go in, keep the revs high, give it a little throttle and it'll step out in a very controllable fashion. On tracks with nice open hairpins it can be great fun as you can give it some extra throttle mid turn to really hook the back round. The extra heat in the tyres when you're on a trackday helps too, it's hard to get them as hot on the road.
I will say that on my car the CR500 used to be more fun to slide around as the ZZS are a bit more grippy. They also gave way sooner, but a little more progressively.
When you're on the limit, you can easily manage the grip on the throttle. So in tight corners you can go in, keep the revs high, give it a little throttle and it'll step out in a very controllable fashion. On tracks with nice open hairpins it can be great fun as you can give it some extra throttle mid turn to really hook the back round. The extra heat in the tyres when you're on a trackday helps too, it's hard to get them as hot on the road.
I will say that on my car the CR500 used to be more fun to slide around as the ZZS are a bit more grippy. They also gave way sooner, but a little more progressively.
UPDATE :
Having now spoken at length to Road and Race Transmissions, they have "nearly" convinced me that the Titan diff is the favoured option for a 7. Can you tell me what or how you noticed or felt RE handling after having one fitted or driving an open diff and then getting a car with.....
Its alump of cash to spend and find it doesnt suit my style so to speak..
Having now spoken at length to Road and Race Transmissions, they have "nearly" convinced me that the Titan diff is the favoured option for a 7. Can you tell me what or how you noticed or felt RE handling after having one fitted or driving an open diff and then getting a car with.....
Its alump of cash to spend and find it doesnt suit my style so to speak..
Turn7 said:
UPDATE :
Having now spoken at length to Road and Race Transmissions, they have "nearly" convinced me that the Titan diff is the favoured option for a 7. Can you tell me what or how you noticed or felt RE handling after having one fitted or driving an open diff and then getting a car with.....
Its alump of cash to spend and find it doesnt suit my style so to speak..
I have run both on road and track. Yes, the Titan is the better diff for performance driving on track, and it's tolerable on the road. But I think the ATB Quaife is better for just road use. It's a fit and forget solution and a lot more suitable for slow speed maneuvering. Having now spoken at length to Road and Race Transmissions, they have "nearly" convinced me that the Titan diff is the favoured option for a 7. Can you tell me what or how you noticed or felt RE handling after having one fitted or driving an open diff and then getting a car with.....
Its alump of cash to spend and find it doesnt suit my style so to speak..
DCL said:
I have run both on road and track. Yes, the Titan is the better diff for performance driving on track, and it's tolerable on the road. But I think the ATB Quaife is better for just road use. It's a fit and forget solution and a lot more suitable for slow speed maneuvering.
+1 Fit and forget. Lifetime warranty for road use too, last I checked.Does all the sideways stuff you could possible want, and predictably.
Unless you are actually losing laptime you care about by lifting an inside wheel in just the right way to cause an ATB to spin-up, I really don't see why you'd want a plate diff.
I would highly recommend Road and race, Ollie is a top bloke, very professional and looking after his customers well.
He prepared and set up a new titan to replace my tired ZF.
This is now much quieter and the car drives beautifully with loads more traction, and very controllable slides. It is also great to lift the inside rear while at the same time drifting around uphill tight bends. Feels like a rallye car
He prepared and set up a new titan to replace my tired ZF.
This is now much quieter and the car drives beautifully with loads more traction, and very controllable slides. It is also great to lift the inside rear while at the same time drifting around uphill tight bends. Feels like a rallye car
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