Testing at Thunderhill
#1
Rennlist Member
Thread Starter
Testing at Thunderhill
We had quite a day of testing yesterday at Thunderhill.
I went to check out my new gearing and figured while I was there i would video tape and time a bunch of changes that have been talked about on the list.
1st test- lighter wheels:
We ran the lighter set of rims (3lbs lighter each and 17s vs 18s and same hoosier R6s) and I was amazed, the times were .8 second faster per lap after 5 laps
2nd test: wing settings and GF
I changed my wing setting to 5 degrees more Angle of attack. my times didnt change much, but the car was more pushy. Then, I put on the Gurney flap and put the wing to my normal settings , and get this, 1 second a lap savings.
It wasnt as pushy for some reason and 10mph faster down the main straight!
3rd test: suspension set up
I then changed my toe in up front by 1/8" to be slightly toed out, and picked up almost 2 seconds a lap.
4th test: driving line to early apex
I then took a few laps where i used the early apex technique, and didnt realize how much time it takes to take a narrower line. I lost 3 seconds a lap, and i was off track on the exits about half the turns. it was really tough to control the car.
so, i think the testing was good. certainly all the data will help with next weekend's race with the American V8 supercar series and SCCA ITE.
I went to check out my new gearing and figured while I was there i would video tape and time a bunch of changes that have been talked about on the list.
1st test- lighter wheels:
We ran the lighter set of rims (3lbs lighter each and 17s vs 18s and same hoosier R6s) and I was amazed, the times were .8 second faster per lap after 5 laps
2nd test: wing settings and GF
I changed my wing setting to 5 degrees more Angle of attack. my times didnt change much, but the car was more pushy. Then, I put on the Gurney flap and put the wing to my normal settings , and get this, 1 second a lap savings.
It wasnt as pushy for some reason and 10mph faster down the main straight!
3rd test: suspension set up
I then changed my toe in up front by 1/8" to be slightly toed out, and picked up almost 2 seconds a lap.
4th test: driving line to early apex
I then took a few laps where i used the early apex technique, and didnt realize how much time it takes to take a narrower line. I lost 3 seconds a lap, and i was off track on the exits about half the turns. it was really tough to control the car.
so, i think the testing was good. certainly all the data will help with next weekend's race with the American V8 supercar series and SCCA ITE.
#2
Race Car
2nd test: wing settings and GF
I changed my wing setting to 5 degrees more Angle of attack. my times didnt change much, but the car was more pushy. Then, I put on the Gurney flap and put the wing to my normal settings , and get this, 1 second a lap savings.
It wasnt as pushy for some reason and 10mph faster down the main straight!
I changed my wing setting to 5 degrees more Angle of attack. my times didnt change much, but the car was more pushy. Then, I put on the Gurney flap and put the wing to my normal settings , and get this, 1 second a lap savings.
It wasnt as pushy for some reason and 10mph faster down the main straight!
4th test: driving line to early apex
I then took a few laps where i used the early apex technique, and didnt realize how much time it takes to take a narrower line. I lost 3 seconds a lap, and i was off track on the exits about half the turns. it was really tough to control the car.
I then took a few laps where i used the early apex technique, and didnt realize how much time it takes to take a narrower line. I lost 3 seconds a lap, and i was off track on the exits about half the turns. it was really tough to control the car.
Scott
#5
Rennlist Member
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#12
Race Director
I started reading this....and was thinking....I WAS AT THUNDERHILL YESTERDAY.....WTF you didn't tell me you were gonna with the Lotus Club!!!!!!!! However it was a great day at the Hill....todays NCRC day was also great!!!
#14
Race Director
#15
Rennlist Member
Thread Starter
Hey, Ice, do some early apexing for me tomorrow and let me know how it goes. (and brake REALLY late too).
I wish I could have come out. Im still trying to make i out next week for the SCCA V8 supercar race!
I wish I could have come out. Im still trying to make i out next week for the SCCA V8 supercar race!