BB Chev HP

[Bob F]

Friends car.
3400 with driver so they tell me.
1.22. 9.03@145.5

[Stan Weiss]

Originally Posted by 1uke

Friends car.
3400 with driver so they tell me.
1.22. 9.03@145.5

Thanks. That 143 MPH had me going. I still don't think that I have the areo dynamic drag right. If you have the time slip how close is this?


60 Foot ET = 1.2200
330 Foot ET = 3.5988
1/8 Mile ET = 5.6781
1/8 Mile MPH = 117.6483
1000 Foot ET = 7.4905
1/4 Mile ET = 9.0332
1/4 Mile MPH = 146.1391


Stan

[Kevin Panzino]

Originally Posted by Stan Weiss

Thanks. That 143 MPH had me going. I still don't think that I have the areo dynamic drag right. If you have the time slip how close is this?


60 Foot ET = 1.2200
330 Foot ET = 3.5988
1/8 Mile ET = 5.6781
1/8 Mile MPH = 117.6483
1000 Foot ET = 7.4905
1/4 Mile ET = 9.0332
1/4 Mile MPH = 146.1391


Stan

Stan, be careful trying to back into aero coefficients with data from Cecil County. That track is downhill, Literally, down hill quite a fair amount. Most people run a solid 2 MPH faster there.

[Glenn Briglio]

Originally Posted by Kevin Panzino

Stan, be careful trying to back into aero coefficients with data from Cecil County. That track is downhill, Literally, down hill quite a fair amount. Most people run a solid 2 MPH faster there.

And the roll out is huge!

[Stan Weiss]

Kevin / Glenn
Thanks. I can adjust the roll. But before this I have never changed it from the default 11.75" The low MPH reminds me of when I did a simulator of a Pro Stock Motorcycle some years ago. I said to the owner that the only way I could get the et to lineup with the MPH was to run out of RPM before the finish line. He laughed and said me too.

Stan

[Adger Smith]

Wow, just got on Google earth and the starting line is 336 Ft. and the finish line is 320 Ft. Yep, that is downhill. a lot of trees around there, too. Probably O2 rich at sometime of the year.

[Stan Weiss]

Originally Posted by Adger Smith

Wow, just got on Google earth and the starting line is 336 Ft. and the finish line is 320 Ft. Yep, that is downhill. a lot of trees around there, too. Probably O2 rich at sometime of the year.

Adger,
Thanks for those numbers. I have never used Google earth. Could you check Capitol Raceway in Maryland. Just by looking down the track it seemed to me to be more down hill than Cecil.



Stan

[Bob Mulry]

Originally Posted by Kevin Panzino

Stan, be careful trying to back into aero coefficients with data from Cecil County. That track is downhill, Literally, down hill quite a fair amount. Most people run a solid 2 MPH faster there.

It's less than 1% (13.2') downhill or it would be a factored track...

There are a lot of downhill tracks without factors

Just sayin'