I was going to direct you to Richard Nunnini's site, but that seems down for
the moment.
Eh... let me get back to you. ;-)
Jan.
=---
Pierre PAPA DOC Legrand wrote...
> Hi Im back...<G> <snip>
Hi Im back...<G> Determined as always to find the perfect setup that
will have me lapping faster than G. Huttu....<G>
Higher numerical means less locking...?
0/0 would be fully locked...?
100/100 fully unlocked...?
0 clutches means fully locked..?
6 clutches means fully slipping..?
More locking means better corner entry under brakes...(big ass
problemof mine, snap oversteer entering corners with lots of ride
height)...?
Less locking means better drive out of the corner...?
Like I said stupid questions but I keep reading the setup guide by
Alison and Im not getting it in regards to these
questions..HELP...please.
PAPA DOC
Pierre PAPA DOC Legrand
Flanker Target
GPL Crash Dummy
Video Card Wizard
www.papadoc.net
FALCON 4 Benchmarks
Rants, Bullshit and Reviews
Increaseing the number of clutches increases the clutching area available and thus increases locking since the clutch pack can handle more power input prior to slipping. The clutch ramp numbers ( i.e. 85/45 power/coast) provide less locking as the numbers increase. The more tightly the cluch pack is locked the better the drive and engine braking forces BUT there is a greater tendency for the back end to step out or loose traction in the corner since both rear wheels are trying to turn at the same rate while following different paths around the corner. If you're getting snap oversteer then your rear wheels are coming unstuck early. Try using a higher rear rebound setting to slow down the forward weight transfer.
BTW GH is an amazing fast racer but I find his setups tough to use given my own considerably less ability
David Erb
"Pierre PAPA DOC Legrand" <[email hidden]> wrote in message news:[email hidden]...
Quoted text (27 lines)
> Hi Im back...<G> Determined as always to find the perfect setup that > will have me lapping faster than G. Huttu....<G> > > Higher numerical means less locking...? > 0/0 would be fully locked...? > 100/100 fully unlocked...? > 0 clutches means fully locked..? > 6 clutches means fully slipping..? > > More locking means better corner entry under brakes...(big ass > problemof mine, snap oversteer entering corners with lots of ride > height)...? > > Less locking means better drive out of the corner...? > > Like I said stupid questions but I keep reading the setup guide by > Alison and Im not getting it in regards to these > questions..HELP...please. > > PAPA DOC > Pierre PAPA DOC Legrand > Flanker Target > GPL Crash Dummy > Video Card Wizard > www.papadoc.net > FALCON 4 Benchmarks > Rants, Bullshit and ReviewsRemember there are two sides. One is with the power on, the first
number. The other is coasting, the second number. The two are
independent. The number of clutches however, works the same for both.
More clutches, more lockup. The clutches are also not as significant as
the ramp angles.
Carroll Smith's book "Drive to Win" has an EXCELLENT chapter on the
EXACT differentials that were used in the GPL era cars.
It is very interesting to note that the most common GPL settings ARE NOT
the settings they used in the real world, in fact they are opposite.
Ricardo Nunnini offers an explanation for this on his truly really great
site.
So, 85/85 with one clutch represents the closest thing to an open diff,
and 30/30 with 5 clutches is closest to a spool.
A real world setup would be 45/85 with one clutch. Carroll Smith said
in his book that he sees no reason to ever have the coast side ramp
angle lower (smaller) than 80.
Interestingly, Nunnini says the diff setup has perhaps the greatest
effect on handling on the cars in GPL. I noticed that when I replaced
the open diff in my 400+ hp road car, http://home.inreach.com/tjester/
with an Auburn Pro limited slip unit that it did make the car MUCH
harder to drive. After all my GPL experience, I now understand why and
wish that I had used a TorSen unit instead. The Auburn Pro unit is
probably better for drag racing, but I do very little drag racing.
Living in the mountains, most of my time is spent carving up the canyon
roads and I'd like a little less power on ramp angle ;-)
-Tony-
Pierre PAPA DOC Legrand wrote:
Quoted text (28 lines)
> > Hi Im back...<G> Determined as always to find the perfect setup that > will have me lapping faster than G. Huttu....<G> > > Higher numerical means less locking...? > 0/0 would be fully locked...? > 100/100 fully unlocked...? > 0 clutches means fully locked..? > 6 clutches means fully slipping..? > > More locking means better corner entry under brakes...(big ass > problemof mine, snap oversteer entering corners with lots of ride > height)...? > > Less locking means better drive out of the corner...? > > Like I said stupid questions but I keep reading the setup guide by > Alison and Im not getting it in regards to these > questions..HELP...please. > > PAPA DOC > Pierre PAPA DOC Legrand > Flanker Target > GPL Crash Dummy > Video Card Wizard > www.papadoc.net > FALCON 4 Benchmarks > Rants, Bullshit and ReviewsHigher ramp angles means less locking (more open diff). In the default
setups, the 85/30 means most open on the power side and most locked on the
coast side.
More clutches means more locking, but this is more fine-tunig compared to
the ramp angles.
On the power side, a more locking diff (lower ramp angle) will let you
accelerate better out of corners, because if the inner rear wheel slips,
there is still more power transmitted to the outer wheel. But it also
increases the chance of breaking both wheels loose, which causes snap
oversteer.
On the coast side (second value), a more open diff (higher ramp angle) will
make the car turn in better and react better to steering with the throttle,
because the rear wheels are allowed to rotate more indepentely. On the
downside, this makes the car more twitchy while braking and turning in.
Hope, this helps!
Peter
Pierre PAPA DOC Legrand <[email hidden]> schrieb
