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GPL: Setup Questions

6 posts by 4 people · 11 Oct 1998 - 13 Oct 1998

Okay, I got a good setup for Monza for the "Long" races and I can even make the fastest lap time during a race. But, as soon as I fill the beast with enough fuel to make the "Grand Prix" length race, I'm about 1-2 seconds off my pace. So what is the first thing to look at in the setups to get back some speed? Also, it seems that under heavy braking the car always seems to pull to the right. Even when I think I am holding the wheel straight (yes it's calibrated). For awhile I thought it was because I had the right side a little stiffer than the left. But now that I have them balanced, it still pulls to the right and the right side will lock-up under heavy braking approaching the Parabolica. What's the secret? -- **************************** Michael E. Carver ************************* Upside out, or inside down...False alarm the only game in town. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=<[ /./. [- < ]>=-=-=-=-=-=-=-=-=-=-=-=-=-=
Grant Reeve 12 Oct 1998#426804
I don't have GPL yet, but i do have a quaint little theory that could be the explanation:) Remember when you're in neutral and rev the car, the car rolls left while the engine accelerates, and rolls back right as the engine comes back down in RPM. So, when you're braking real hard, the engine RPM is decreasing, and thus transferring a minor amount of weight over to the right hand side, and thus the right hand wheels are getting a little bit better grip, thus pulling the car to the right... but that's just a bit of a guess:)
Michael: Try these things: Use the 85/30 diff pack. This keeps the wheels locked longer under deceleration, less chance of locking the inside rear. Play with the number of clutches. More clutches lock sooner and unlock later on. The trade off is that they may lock with a bang leaving the second lesmo... Set your brake bias to 60 front or more. Train yourself not to ever put the car into coast mode. Brake down to your corner speed, and as you get there apply enough throttle as you release the brake so that you aren't coasting while doing the last little bit of brakeing. This will also put you smoother into and through the turn. These car would snap away under chop throttle. Let me know if any of this was relevent. MM
Quoted text (18 lines)> Okay, I got a good setup for Monza for the "Long" races and I can even > make the fastest lap time during a race. But, as soon as I fill the > beast with enough fuel to make the "Grand Prix" length race, I'm about > 1-2 seconds off my pace. So what is the first thing to look at in the > setups to get back some speed? > Also, it seems that under heavy braking the car always seems to pull to > the right. Even when I think I am holding the wheel straight (yes it's > calibrated). For awhile I thought it was because I had the right side a > little stiffer than the left. But now that I have them balanced, it > still pulls to the right and the right side will lock-up under heavy > braking approaching the Parabolica. What's the secret? > -- > **************************** Michael E. Carver ************************* > Upside out, or inside down...False alarm the only game in town. > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=<[ /./. [- < ]>=-=-=-=-=-=-=-=-=-=-=-=-=-=
If this type of thing is being modeled in the sim it's no wonder that we all need super computers to run it properly.
% Try these things: % Use the 85/30 diff pack. This keeps the wheels locked longer % under deceleration, less chance of locking the inside rear. % Play with the number of clutches. More clutches lock sooner and unlock % later on. The trade off is that they may lock with a bang leaving the % second lesmo... This one helped out alot. I hadn't gotten around to "advanced" setups yet. The ramp angel was already at 85/30. But adding 2 more clutches makes it a heck of alot easier to hold it straight under heavy braking. % Set your brake bias to 60 front or more. I always thought that for maximum braking on the straight one wanted to avoid moving the brake bias so far towards the front. I guess it will help in the initial braking, but on the approach to the Parabolica I think one would want to have more braking the deeper one goes. I found that moving the brake bias just slightly forward (say 55-56) worked better for my style. % Train yourself not to ever put the car into coast mode. Brake down to % your corner speed, and as you get there apply enough throttle as you % release the brake so that you aren't coasting while doing the last % little bit of brakeing. This will also put you smoother into and through % the turn. These car would snap away under chop throttle. Yep, this is important. If you don't start getting back onto the throttle just little the car doesn't want to turn. % Let me know if any of this was relevent. Thanks.... I'm getting better, but still have a way to go to keep up with the old pros. % > % > Okay, I got a good setup for Monza for the "Long" races and I can even % > make the fastest lap time during a race. But, as soon as I fill the % > beast with enough fuel to make the "Grand Prix" length race, I'm about % > 1-2 seconds off my pace. So what is the first thing to look at in the % > setups to get back some speed? % > % > Also, it seems that under heavy braking the car always seems to pull to % > the right. Even when I think I am holding the wheel straight (yes it's % > calibrated). For awhile I thought it was because I had the right side a % > little stiffer than the left. But now that I have them balanced, it % > still pulls to the right and the right side will lock-up under heavy % > braking approaching the Parabolica. What's the secret? % > % > -- % > **************************** Michael E. Carver ************************* % > Upside out, or inside down...False alarm the only game in town. % > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=<[ /./. [- < ]>=-=-=-=-=-=-=-=-=-=-=-=-=-= -- **************************** Michael E. Carver ************************* Upside out, or inside down...False alarm the only game in town. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=<[ /./. [- < ]>=-=-=-=-=-=-=-=-=-=-=-=-=-=
Glad to be of some help...<G> I agree that less front brake bias gives shorter braking distances... IF you can keep the rears from locking up. I have traded some braking distance for more survivability. I use 58 front at Monza. I started at 60 and have been removing some as I learn how to stop the thing. I am convinced that the hard right phenomenon is caused by the right rear locking up. I have a best of 1:31.19 at Monza in the Lotus. 1:32 odd in the Ferrari. Regards, MM
Quoted text (63 lines)> % Try these things: > % Use the 85/30 diff pack. This keeps the wheels locked longer > % under deceleration, less chance of locking the inside rear. > % Play with the number of clutches. More clutches lock sooner and unlock > % later on. The trade off is that they may lock with a bang leaving the > % second lesmo... > This one helped out alot. I hadn't gotten around to "advanced" setups > yet. The ramp angel was already at 85/30. But adding 2 more clutches > makes it a heck of alot easier to hold it straight under heavy braking. > % Set your brake bias to 60 front or more. > I always thought that for maximum braking on the straight one wanted to > avoid moving the brake bias so far towards the front. I guess it will > help in the initial braking, but on the approach to the Parabolica I > think one would want to have more braking the deeper one goes. I found > that moving the brake bias just slightly forward (say 55-56) worked > better for my style. > % Train yourself not to ever put the car into coast mode. Brake down to > % your corner speed, and as you get there apply enough throttle as you > % release the brake so that you aren't coasting while doing the last > % little bit of brakeing. This will also put you smoother into and through > % the turn. These car would snap away under chop throttle. > Yep, this is important. If you don't start getting back onto the > throttle just little the car doesn't want to turn. > % Let me know if any of this was relevent. > Thanks.... I'm getting better, but still have a way to go to keep up > with the old pros. > % > > % > Okay, I got a good setup for Monza for the "Long" races and I can even > % > make the fastest lap time during a race. But, as soon as I fill the > % > beast with enough fuel to make the "Grand Prix" length race, I'm about > % > 1-2 seconds off my pace. So what is the first thing to look at in the > % > setups to get back some speed? > % > > % > Also, it seems that under heavy braking the car always seems to pull to > % > the right. Even when I think I am holding the wheel straight (yes it's > % > calibrated). For awhile I thought it was because I had the right side a > % > little stiffer than the left. But now that I have them balanced, it > % > still pulls to the right and the right side will lock-up under heavy > % > braking approaching the Parabolica. What's the secret? > % > > % > -- > % > **************************** Michael E. Carver ************************* > % > Upside out, or inside down...False alarm the only game in town. > % > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=<[ /./. [- < ]>=-=-=-=-=-=-=-=-=-=-=-=-=-= > -- > **************************** Michael E. Carver ************************* > Upside out, or inside down...False alarm the only game in town. > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=<[ /./. [- < ]>=-=-=-=-=-=-=-=-=-=-=-=-=-=

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