APR GTC200 Setting

[Icecreamtruk]

Originally Posted by CSG Mike

Remember that a splitter that is too strong will just pass in the force to other things. I prefer splitters designed to be "just enough", so that if something needs to break away or fail, to prevent other damage, the splitter goes, rather than something else.

Yeah, thats what I had in mind as well. So this next splitter will be designed to be strong resisting force downwards but to relatively easily brake away from the rest of the car if it catches something solid like a big bump or an offtrack excursion. Lesson learned the hard way this time I suppose.

By the way, Im thinking of getting a clutch type LSD for next year Mike, I will contact you for that as that is something I have little to no experience with so I will have to rely on your expeertise for the setup.

For the setup Lutfy, I think I understand more or less where my problem lies now (sadly, after the championship is over). But it is indeed a mix of suspension and aero imbalances. Trying to fix it all now and test before tracks close for the winter, as there is usually very little time to test in spring before the championship starts again.

[lutfy]

Originally Posted by Icecreamtruk

Yeah, thats what I had in mind as well. So this next splitter will be designed to be strong resisting force downwards but to relatively easily brake away from the rest of the car if it catches something solid like a big bump or an offtrack excursion. Lesson learned the hard way this time I suppose.

By the way, Im thinking of getting a clutch type LSD for next year Mike, I will contact you for that as that is something I have little to no experience with so I will have to rely on your expeertise for the setup.

For the setup Lutfy, I think I understand more or less where my problem lies now (sadly, after the championship is over). But it is indeed a mix of suspension and aero imbalances. Trying to fix it all now and test before tracks close for the winter, as there is usually very little time to test in spring before the championship starts again.

It’s a never ending journey so worry not try to keep all other variables constant (especially the tires). I had a long convo with KC from APR who shined a bit of light to get the aero tuned. I have some variables to test (less angle) but this weekend is not looking promising.

Start at the 55 sec mark and you’ll know what I mean by aero drag:

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[lutfy]

The shorter rod/link worked and got us closer to -2 degree AOA. Overall the grip was there there, some slow/mid speed trackout, there was a touch of oversteer. Dialed it out with softening the compression (one click) at the back and increasing rebound (one click) in the front. Just a touch to balance things out.

Bottom line, the drag was reduced.... In past I had the RX8 I have been competing with pull hard on me, but now it was just a touch but was able to gain on him in higher speed corners mitigating the drag by increased downforce.

Lost by a 10th of a second at Dominion in class but thats a different topic Next outing, Watkins Glen.

Lutfy

[CSG Mike]

Originally Posted by lutfy

The shorter rod/link worked and got us closer to -2 degree AOA. Overall the grip was there there, some slow/mid speed trackout, there was a touch of oversteer. Dialed it out with softening the compression (one click) at the back and increasing rebound (one click) in the front. Just a touch to balance things out.

Bottom line, the drag was reduced.... In past I had the RX8 I have been competing with pull hard on me, but now it was just a touch but was able to gain on him in higher speed corners mitigating the drag by increased downforce.

Lost by a 10th of a second at Dominion in class but thats a different topic Next outing, Watkins Glen.

Lutfy

Alternation options is to run a higher setting on the rear sway, or increase rear tire pressure slightly, to run optimal damper settings.

[lutfy]

Originally Posted by CSG Mike

Alternation options is to run a higher setting on the rear sway, or increase rear tire pressure slightly, to run optimal damper settings.

Mike tried stiffer bar at the back. Car was a handful. With my spring rates, the stock bars work better.

Increasing rear pressure would only lead to less grip (running 36 hot as is on R7). This is for exit oversteer.

Lutfy

[CSG Mike]

Originally Posted by lutfy

Mike tried stiffer bar at the back. Car was a handful. With my spring rates, the stock bars work better.

Increasing rear pressure would only lead to less grip (running 36 hot as is on R7). This is for exit oversteer.

Lutfy

Ah, specifically exit oversteer.

Do you have a clutch type LSD?

[lutfy]

Originally Posted by CSG Mike

Ah, specifically exit oversteer.

Do you have a clutch type LSD?

Yes I do. OS Giken 1.5w, build based on mods/current specs (after filling out their sheet).

Lutfy

[CSG Mike]

Originally Posted by lutfy

Yes I do. OS Giken 1.5w, build based on mods/current specs (after filling out their sheet).

Lutfy

How is corner entry/mid behavior?

is the rear looseness specific to exit, or does it coincide with throttle application?

[lutfy]

Originally Posted by CSG Mike

How is corner entry/mid behavior?

is the rear looseness specific to exit, or does it coincide with throttle application?

Stable at entry/mid corner its throttle induced. I will have to put a video up to show throttle/steering input.

Could be the tires (20+HC on them now).

Lutfy