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View Full Version : Single rear brake on Drexler LSD



Gianluca Niccoli
12-05-2012, 02:50 AM
Hello everybody,
I'm a member of Unical Reparto Corse Team from University of Calabria, Italy.
We are thinking to use a single Brake mounted on the LSD Drexler V1, but we are not sure that drexler's box can support it. We want to link the brake with a flange like one for the crown wheel.
Has someone used the same solution?

Dash
12-05-2012, 10:08 AM
Well if you are using Drexler's products, then you must have their CAD models? Just run some FEA on it!

I'm sure its been done, but would that be a problem putting the rotor on the diff instead of the wheels? Just throwing a question out there.

Gianluca Niccoli
12-05-2012, 01:59 PM
Thank you for your answer,
the problem is not to run some FEA with the brake disk instead of the wheel, but if is possible to mount 2 flanges on both side. We don't have the diff only some CAD models, and so we don't know if the flange could be mounted directly on the diff box, because the other side of the diff is different from the one for the wheel.

coleasterling
12-05-2012, 05:21 PM
It can be done pretty easily. You can see what we did in this picture. We bolted a flange onto the diff using the stock assembly holes with longer bolts and didn't have any issues whatsoever.

Gianluca Niccoli
12-06-2012, 01:30 AM
thank you Cole!
This is what we wanted to know!

Gianluca Niccoli
12-06-2012, 02:29 AM
Cole I have another question...
Which engine do you use?

Somebody have the Drexler diff with a 2 cylinder engine? the power is enough to make it work?

Lorenzo Pessa
12-06-2012, 02:22 PM
Originally posted by Gianluca Niccoli:
Cole I have another question...
Which engine do you use?

Somebody have the Drexler diff with a 2 cylinder engine? the power is enough to make it work?

Pisa... :-)

Gianluca Niccoli
12-06-2012, 02:29 PM
ah bene! abbiamo anche lo stesso motore! ma come gestisce il bloccaggio? avete avuto difficoltà nel setup?

Lorenzo Pessa
12-07-2012, 06:43 AM
Originally posted by Gianluca Niccoli:
ah bene! abbiamo anche lo stesso motore! ma come gestisce il bloccaggio? avete avuto difficoltà nel setup?

I've sent you a private message yesterday.
Use English in this forum so several people can add their contributes.
In the PM was stated "don't ask me about gears!" :-)

Gianluca Niccoli
12-07-2012, 02:50 PM
Thank you Lorenzo,
you are right, I read your message late.

mech5496
12-08-2012, 02:26 AM
Can be done. We replaced our diffs' splined end with a non-splined one (like the right-side endcap), because it wasn't needed (we do not use a chain drive as the diff is placed inside the electric motor assembly...)

theTTshark
12-10-2012, 12:20 PM
The only problem I have with this is a single brake being used on a car with a LSD. Unless I'm missing something here. -_-

Dash
12-10-2012, 03:11 PM
Originally posted by theTTshark:
The only problem I have with this is a single brake being used on a car with a LSD. Unless I'm missing something here. -_-

It really depends on the type of LSD and whether it is a problem. For a Torsen type, as long as you don't pick up a wheel it should work ok ( same thing applies if you pick up a wheel and hit the gas pedal). For a Clutch pack type, it should work regardless since the clutches are helping you out.