On Fri, 01 Dec 2000 16:54:06 GMT, Thomas JS Brown <[email hidden]>
wrote:
1. A clutchpack diff as used in GPL is also a speed sensitive
diff. For torque sensing you need something like a Torsen.
2. An clutchpack or detroit locker diff does not use a
significant amount of hp. It may reduce speed by causing tire drag
and corner entry understeer, which is why you might try an open diff
on a high speed oval oval where wheelspin is not an issue. Actually,
a Torsen burns some hp, due to truly incredible gear forces.
3. Most folks in Nascar use a detroit locker type on ovals.
I wonder if they do something else on the road courses?
Hello all,
being a European that's slowly getting into Nascar, I have a question.
While setup options of both Nascar Heat and Nascar 4 demos are a sim
enigneer's dream, I noticed that neither features any differential lock
settings. Is this because real Nascar rules allow only a single type of
differential being used (in NH, it seems like a locked axle considering
the ammount of push), or is it something that simply isn't altered on
ovals where traction isn't that much of an issue?
-Gregor
Gregor Veble wrote:
I was wondering the same thing. Like a option for a open differential,
limited slip or a locker. Some teams try and race with a open Diff at
Dega and Daytona to gain some extra HP at the rear wheel.
--
Solo1 C-Modified (CASC-OR/BARC)
http://www.barc-oc.com
http://www.casc.on.ca
Quoted text (12 lines)
> > Hello all, > > being a European that's slowly getting into Nascar, I have a question. > While setup options of both Nascar Heat and Nascar 4 demos are a sim > enigneer's dream, I noticed that neither features any differential lock > settings. Is this because real Nascar rules allow only a single type of > differential being used (in NH, it seems like a locked axle considering > the ammount of push), or is it something that simply isn't altered on > ovals where traction isn't that much of an issue? > > -GregorI think the standard Nascar differential is the type referred to as the
Detroit Locker. It senses and reacts to differential wheel speed as
opposed to differential torque (like the kind in GPL) and is a much more
simple design (though much more noisy and clunky) than the limited slip
variety of diff.
TJ
Alan Orton wrote:
Quoted text (23 lines)
> > Gregor Veble wrote: > > > > Hello all, > > > > being a European that's slowly getting into Nascar, I have a question. > > While setup options of both Nascar Heat and Nascar 4 demos are a sim > > enigneer's dream, I noticed that neither features any differential lock > > settings. Is this because real Nascar rules allow only a single type of > > differential being used (in NH, it seems like a locked axle considering > > the ammount of push), or is it something that simply isn't altered on > > ovals where traction isn't that much of an issue? > > > > -Gregor > > I was wondering the same thing. Like a option for a open differential, > limited slip or a locker. Some teams try and race with a open Diff at > Dega and Daytona to gain some extra HP at the rear wheel. > > -- > Solo1 C-Modified (CASC-OR/BARC) > http://www.barc-oc.com > http://www.casc.on.ca> 1. A clutchpack diff as used in GPL is also a speed sensitive
> diff. For torque sensing you need something like a Torsen.
Yes, you're right, though the clutchpack lsd diff functions on torque it
is wheelspeed sensing type of arrangement. My mistake..
TJ
