MCA Suspension "Traction Mod"

[solidONE]

What would be great is some pre and post traction mod videos, data-logs, lap times.

[maregt]

What about a stock BRZ with camber bolt? I'd like to be able to step on the gas earlier, but don't want the rear to be too soft as the car is already prone to understeer...

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[86•BRZ]

Originally Posted by solidONE

What would be great is some pre and post traction mod videos, data-logs, lap times.

Quick update, After dialling the car in at my last event (a new track) I have now set a PB at Queensland Raceway and was extremely happy with how the car felt into, through and out of corners, I was just loving it.
I have a data log via podium. I'll try and find old lap to compare and we may be able to see something.

[86•BRZ]

best i can find to demonstrate:
you can see where full throttle is applied pre and post

Pre traction mod:



post traction mod:

[GSpeed]

Originally Posted by 86•BRZ

best i can find to demonstrate:
you can see where full throttle is applied pre and post

What's going on with your logging frequency between those two logs?

[86•BRZ]

Originally Posted by GSpeed

What's going on with your logging frequency between those two logs?

At a guess one was 10Hz, one was 25Hz.


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[GSpeed]

Originally Posted by 86•BRZ

At a guess one was 10Hz, one was 25Hz.


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Looks like it. Are you able to superimpose speed through the corner? That would be telling as well. I'm not that familiar with the software you're using. Thanks!

Jake

[solidONE]

Originally Posted by 86•BRZ

best i can find to demonstrate:
you can see where full throttle is applied pre and post

Pre traction mod:



post traction mod:

Yeah knowing how fast you enter and exit pre and post would help too. Looks good though. I'm assuming the dot on the left indicates where you have applied full throttle in the corner?

[churchx]

From those logs and description of extra stability & ability to open throttle sooner in curve .. that sounds exactly what i got with slight toe-in in rear. BUT! Our cars have toe adjustability as stock, and that doesn't need any extra parts, one can just ask to deal in when doing alignment. About the only thing that this mod might be better for in my eyes is that not-0 toe increases tire wear.

[86•BRZ]

Originally Posted by solidONE

Yeah knowing how fast you enter and exit pre and post would help too. Looks good though. I'm assuming the dot on the left indicates where you have applied full throttle in the corner?

The dot is full throttle. There's a million ways to fudge data but it does correlate with what I've been saying.


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[86•BRZ]

Originally Posted by churchx

From those logs and description of extra stability & ability to open throttle sooner in curve .. that sounds exactly what i got with slight toe-in in rear. BUT! Our cars have toe adjustability as stock, and that doesn't need any extra parts, one can just ask to deal in when doing alignment. About the only thing that this mod might be better for in my eyes is that not-0 toe increases tire wear.

That's a gross simplification of something that is different. A bit like saying you don't need coilovers if you've got a camber bolt.



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[wootwoot]

Any one know how much this lowers the rear of the car?

[wparsons]

Originally Posted by churchx

From those logs and description of extra stability & ability to open throttle sooner in curve .. that sounds exactly what i got with slight toe-in in rear. BUT! Our cars have toe adjustability as stock, and that doesn't need any extra parts, one can just ask to deal in when doing alignment. About the only thing that this mod might be better for in my eyes is that not-0 toe increases tire wear.

Rear toe in also makes the car less willing to rotate at turn in, this mod shouldn't affect off throttle behavior.

Originally Posted by wootwoot

Any one know how much this lowers the rear of the car?

It doesn't, it just changes one of the pickup points to reduce rear anti-squat.

[wootwoot]

Originally Posted by wparsons

It doesn't, it just changes one of the pickup points to reduce rear anti-squat.

You sure? There are control arms from different manufacturers that have two sets of holes where they attach to the chassis. One set for factory height, one for a 15mm drop. How would changing the pick up point be any different than that? Also, one user already mentioned he had to raise his rear after install...