Camaro XV

[Stielow]

Originally Posted by Damn True

Very clever.

This is the general idea.

The lower valance is open and the outer courners are brake cooling ducts and the center is for the heat exchangers.

[Vince@Meanstreets]

I was expecting animation with narrative from the science guy.

Nice work.

[Damn True]

Originally Posted by Vince@MSperfab

I was expecting animation with narrative from the science guy.

Nice work.

I think Mark has a lab coat.

[Damn True]

Very cool.

A lot more holes to plug in an OE sub, but it might be doable.

[Cris@JCG]

I expected that some of work you did on the new Z28 would trickle down into your new 69..

What are your thoughts on traction control for these old hot rods? Currently researching Racetronix & Bosch Motorsports ABS..

Originally Posted by Stielow

This is the general idea.

The lower valance is open and the outer courners are brake cooling ducts and the center is for the heat exchangers.

[Stielow]

Originally Posted by Cris@JCG

I expected that some of work you did on the new Z28 would trickle down into your new 69..

What are your thoughts on traction control for these old hot rods? Currently researching Racetronix & Bosch Motorsports ABS..

Traction control is a very tricky topic. Can it make you faster? Yes. Is it very hard to tune? Yes.

Not until the Z/28 was PTM (Performance Traction Management) ie Traction Control equal to drivers best effort or in some cases better. The other thing about PTM is it is much easier to drive fast.

BTM is very complicated. It is a fully integrated system that uses the following sensors:

Throttle position
4 wheel speed sensors
4 suspension travel sensors
Lateral sensor
Longitudinal sensor
Yaw sensor
Tire Pressure Sensors

All this feeds into a predictive tire models that predicts how much power the rear tires can take. We even use the suspension travel sensors to know if the car is airborne so not to cut power when it lands (Flying Car Mode).

So can it be done? Yes. Do I use it on my Hot Rods? No.

I don't have the time or the money to calibrate it. At 875 HP the integration time takes a long time and a lot of tires.

If I had a shop and sold cars to the public. (Not that guy in Woodland that can drive high HP stuff) I would think about slip based traction control to keep people from hurting themselves. My cars can do 3rd gear roll on burn outs! The pro race teams tune the TC systems to each track so it is easy. A one sizes fits all calibration is tricky.

Mark

[Sieg]

Originally Posted by Stielow

(Not that guy in Woodland that can drive high HP stuff)

High torque stuff too!



Back on traction control - KTM's new traction management system on their 1290 motors is modulating power via the throttle shafts. A qualified friend who's old-school anti-technology said the feel of the system is very impressive. Is throttle shaft/butterfly modulation being used in the automotive world?

[Stielow]

Originally Posted by Sieg

High torque stuff too!



Back on traction control - KTM's new traction management system on their 1290 motors is modulating power via the throttle shafts. A qualified friend who's old-school anti-technology said the feel of the system is very impressive. Is throttle shaft/butterfly modulation being used in the automotive world?

All new GM engines are throttle by wire, so yes the PTM system pulls throttle also. But, moving spark or dropping cylinders is faster. When you want and small correction in torque it is better than pulling throttle.

Mark

[clill]

Does that pic make my feet look big ?

[Sieg]

Originally Posted by clill

Does that pic make my feet look big ?

Not if you're at the Circus.