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Porsche 935/78 - Moby Dick - differential


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#1 Knoephoak

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Posted 03 December 2001 - 18:32

Last I saw on a site that the Porsche 935/78 had no differential, but how could he go normaly through the corner ? Had he traction control or something ?

And how could you go through a corner if you have no differantial (for example a kart)? Than you can go just straight, or your wheels must slip...


Here a site over the Porsche 735/78:
http://www.geocities.../mobydick4.html

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#2 Knoephoak

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Posted 03 December 2001 - 18:49

Ow ****.. wrong forum :o

I thought that this wat the technicall forum :confused:

sorry !

#3 BMW FW22

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Posted 03 December 2001 - 18:49

with no dif i think it must be very understeered, but i can't image a racecar is understeered because is it so easy to prevent with a good dif.

Weird..

(mods, plz move to technical... those damn newbe's ;) )

#4 BMW FW22

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Posted 03 December 2001 - 18:50

And why does that car only have a four speed transmission ???

#5 Enkei

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Posted 03 December 2001 - 18:51

Dag mensen van het formule 1 forum :clap:

#6 2F-001

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Posted 03 December 2001 - 21:17

Four gears were enough... the car had a huge amount of a torque, a reasonably wide power band and the only standing starts it needed to make were pulling away from the pit-box.
Many 935 and Kremer derivitives ran with a solid final drive. One reason, at least, was to counter some of the inherent oversteer - I believe they were not especially easy to drive well and were not the best cars for tyre-wear.
Paul Frere's book 'Porsche racing cars of the 70s' covers this in a little more detail.

#7 Knoephoak

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Posted 05 December 2001 - 11:06

But how could you go normaly throught the corner ?

#8 2F-001

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Posted 05 December 2001 - 18:33

Untidily and with a lot of tyre scrub I guess...!
I must say, that aspect bothers me - it does seem a crude way of going about things.
But whilst they looked smooth on the open expanses of Silverstone, they did look a bit awkward and muscle-bound at twisty Donington when the German Group 5s ran there in the late seventies.

I have the opposite experience - struggling with an open diff (and rather less power!) when I need an LSD.
We need to hear from someone who's driven one...

#9 Catalina Park

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Posted 06 December 2001 - 09:38

While I haven't driven a 935 (Though I did pit crew on one) I have raced front engine 600 hp V8 cars without a differential and there is nothing hard about it! It's just a bit different.
All the cars in the V8 catagory in Australia have no differential.
Just think of it as a limited slip diff with Very limited slip.