Camaro XV

[Stielow]

Originally Posted by jimbo

So, how far a long is the next project?

Looking the data Hellfire lacks forward bite.

Max Lat about 1.1 G
Max Decel about 1.3 G
Max Accel about .85 G

What to build next? I'm not sure. If I want to play in the OUSCI deal I need to wait for the new rules

I really like Hellfire and '69 Camaros. I think I'll enjoy doing nothing for awhile and fix rock chips......

Looking at the data AWD would fix forward bite.

[camcojb]

Originally Posted by Stielow

Looking the data Hellfire lacks forward bit.

Max Lat about 1.1 G
Max Decel about 1.3 G
Max Accel about .85 G

What to build next? I'm not sure. If I want to play in the OUSCI deal I need to wait for the new rules

I really like Hellfire and '69 Camaros. I think I'll enjoy doing nothing for awhile and fix rock chips......

Looking at the data AWD would fix forward bit.

Looks like a mushroom cloud...

[RussMurco]

Originally Posted by Stielow

I really like Hellfire and '69 Camaros. I think I'll enjoy doing nothing for awhile and fix rock chips......

Sounds like a plan, enjoy it for a while!!!

[hersheys69z]

Hi Mark
I was thinking about putting awd in a 69 Camaro.
Looks like the trailblazer ss system would be the way to go.
I'm sure you would have no problem fabbing up mounts for struts.
Is it possible to have awd and use the new Z/28 struts?
That is what I want to see in the next Stielow Camaro

[waynieZ]

Originally Posted by Stielow

Looking the data Hellfire lacks forward bite.

I thought it was a bug on Hellfire's windshield after a 150 mph straight away!

[dontlifttoshift]

Originally Posted by Stielow

Looking the data Hellfire lacks forward bite.

Max Lat about 1.1 G
Max Decel about 1.3 G
Max Accel about .85 G

That's 0-60 in 3.2 if you could do .85 from a standing start. I'm guessing that sample was from the road course.

Realistically you shook the car down twice(?) before sending it to vegas. I would really like to see you dial the car in, if you can keep it long enough. What can you do about forward acceleration? Spring change, shock tuning, wider wheels, perhaps a taller tire if it doesn't mess with the ABS......they're never finished.

[Stielow]

Originally Posted by dontlifttoshift

That's 0-60 in 3.2 if you could do .85 from a standing start. I'm guessing that sample was from the road course.

Realistically you shook the car down twice(?) before sending it to vegas. I would really like to see you dial the car in, if you can keep it long enough. What can you do about forward acceleration? Spring change, shock tuning, wider wheels, perhaps a taller tire if it doesn't mess with the ABS......they're never finished.

It is geeky engineer Friday. The graph below is the tractive effort curve from LVMS. Longitudinal acceleration vs vehicle speed.



The data shows I'm accelerating at about 0.85 G at 60 MPH and still pulling 0.6 G at 100 MPH. On the flip side I can generate 1.3 G decel at 120 MPH.

Just fun to look at the data.

On the temperature side this is the data from my last run the air temp was 85 degrees F.



After 15 minutes the water was at around 220 F and the oil was around 270 F. To road race a 900 ish car and to keep it cool is tough. I'm very happy with the data.

Looking at the data the temps are becoming steady state and they will stabilize below peak excursion limits.

Once I get out of the throttle look how fast it cools!

Mark

[wiedemab]

Originally Posted by Stielow

[IMG]



On the flip side I can generate 1.3 G decel at 120 MPH.


Mark

After hitting the brakes at 120mph.

[MSTSFabbed]

Such cool data!!
I had a prof that would always tell us, "If you can't express it with a number, you don't know anything!"

What are you using to record all this?

[Stielow]

Originally Posted by MSTSFabbed

Such cool data!!
I had a prof that would always tell us, "If you can't express it with a number, you don't know anything!"

What are you using to record all this?

http://www.race-technology.com/dash2_pro_2_31358.html

It will pull in the GM CAN data (All the information from the ECM). It has built in accelerometers, GPS and open channels for analog inputs. You can also link a GoPro to it to sync video and data.

The other thing I really like is you can program it for all the warnings you want and add math to the warning channels. For example if oil pressure is below 20 psi and RPM is above 2000 set warning lights.

Once you get used to using data it is hard to go back.

Mark