Autocrossing & Roadracing Suspension Setup for Track Corvettes, Camber/Caster Adjustments, R-Compound Tires, Race Slicks, Tips on Driving Technique, Events, Results
Sponsored by:
Sponsored by:

Me lifting the front wheels on takeoff...

Old 11-14-2007, 06:06 AM
  #1  
Mikelly
Melting Slicks
Thread Starter
 
Mikelly's Avatar
 
Member Since: Nov 2003
Location: Fredericksburg VA
Posts: 2,555
Received 5 Likes on 3 Posts

Default Me lifting the front wheels on takeoff...

I can't believe this thing pulled the wheels off the ground and I only got a 12.4@117!

Actually I felt it get light in the front and lifted about 2 milliseconds after this pic was snapped. Almost shart meself!

Mike

Old 11-14-2007, 06:10 AM
  #2  
CHJ In Virginia
Safety Car
 
CHJ In Virginia's Avatar
 
Member Since: Nov 2000
Location: Shenandoah Valley Virginia
Posts: 4,549
Likes: 0
Received 27 Likes on 24 Posts

Default

That is an amazing launch !! Those rear tires must stick like glue - what type, and at what RPM did you dump the clutch ??
Old 11-14-2007, 06:16 AM
  #3  
Mikelly
Melting Slicks
Thread Starter
 
Mikelly's Avatar
 
Member Since: Nov 2003
Location: Fredericksburg VA
Posts: 2,555
Received 5 Likes on 3 Posts

Default

That's what is soo funny... They're standard Pirelli PZeros in a 220UTQG. I slipped the clutch at about 2800 RPMS. After this launch I quit for the day... the thought of broken parts and a depleted checking account skeered me off... Think I did a total of 8 passes and never got out of the 12s and never got faster than 118mph. Trying to get that car down that track was the most frustrating and unrewarding thing I've tried in a while...

Mike
Old 11-14-2007, 06:57 AM
  #4  
RoganR
Melting Slicks
 
RoganR's Avatar
 
Member Since: Mar 2007
Posts: 2,342
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Mikelly
That's what is soo funny... They're standard Pirelli PZeros in a 220UTQG. I slipped the clutch at about 2800 RPMS. After this launch I quit for the day...

Mike
No engine up front, correct? This would make lifting the front end a lot easier. BTW I would have left after lifting the front end also. You got the pic, so quitting while you are ahead was a good idea.
Old 11-14-2007, 07:14 AM
  #5  
AU N EGL
Team Owner
 
AU N EGL's Avatar
 
Member Since: Sep 2003
Location: Raleigh / Rolesville NC
Posts: 43,084
Likes: 0
Received 24 Likes on 24 Posts

Default

Great pic mike. Blow that pic up and put it on the garage wall.

Old 11-14-2007, 10:13 AM
  #6  
willhaveC6
Racer
 
willhaveC6's Avatar
 
Member Since: Nov 2006
Location: Bluffton SC
Posts: 407
Likes: 0
Received 5 Likes on 4 Posts

Default

Mike, What were you thinking? That car is meant to go fast and turn and only take air at Shenandoah

Cool pic though. I agree blow it up and put it on the wall. Say you been there done that and not going to do it again....
Old 11-14-2007, 11:48 AM
  #7  
RedLS6
Drifting
 
RedLS6's Avatar
 
Member Since: Aug 2003
Location: Cary NC
Posts: 1,921
Received 1,727 Likes on 782 Posts

Default

When I read the thread title, I thought "no way".....but damn! What a launch!
Old 11-14-2007, 11:57 AM
  #8  
TedDBere
Melting Slicks
 
TedDBere's Avatar
 
Member Since: Jun 2002
Location: Charleston South Carolina
Posts: 3,070
Likes: 0
Received 4 Likes on 4 Posts

Default

You're lucky you didn't break something. Those cars aren't meant to do that. Half-shaft, clutch, diff, tranny...all of them are real expensive on a Porsche...FWIW.

Cool Picture though...don't do it again.
Old 11-14-2007, 12:21 PM
  #9  
xsiveone
Le Mans Master
 
xsiveone's Avatar
 
Member Since: Jul 2004
Posts: 6,661
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by TedDBere
You're lucky you didn't break something. Those cars aren't meant to do that. Half-shaft, clutch, diff, tranny...all of them are real expensive on a Porsche...FWIW.

Cool Picture though...don't do it again.
Old 11-14-2007, 01:39 PM
  #10  
linutux
Pro
 
linutux's Avatar
 
Member Since: Mar 2006
Location: Virginia
Posts: 677
Likes: 0
Received 1 Like on 1 Post
Default

That's a funny look'n corvette...

GREAT PIC!!!
Old 11-14-2007, 03:15 PM
  #11  
tjZ06
Melting Slicks
 
tjZ06's Avatar
 
Member Since: Dec 2004
Location: Palo Alto CA
Posts: 2,654
Likes: 0
Received 1 Like on 1 Post

Default

Wow... that's an intense launch for a 12. But who cares about drag racing anyway, right?

-TJ
Old 11-14-2007, 06:09 PM
  #12  
Mikelly
Melting Slicks
Thread Starter
 
Mikelly's Avatar
 
Member Since: Nov 2003
Location: Fredericksburg VA
Posts: 2,555
Received 5 Likes on 3 Posts

Default

I'm not somuch worried about breaking it, cause I know it's a risk of running the car... I'd just write a check, be broke for a month, and have it fixed.

A side effect to that wheel stand was that this evening while I was prepping the car for Summit Point on friday, I found all 10 of the rear lug studs sitting at aboout 150#ft. of torque. I have to order some new lug studs... Normally I check them at 96#... That was some serious torque when she stood up!

Mike
Old 11-14-2007, 06:20 PM
  #13  
robvuk
Le Mans Master
 
robvuk's Avatar
 
Member Since: Sep 2004
Location: Los Angeles
Posts: 5,727
Received 4 Likes on 3 Posts

Default

Originally Posted by Mikelly
I'm not somuch worried about breaking it, cause I know it's a risk of running the car... I'd just write a check, be broke for a month, and have it fixed.

A side effect to that wheel stand was that this evening while I was prepping the car for Summit Point on friday, I found all 10 of the rear lug studs sitting at aboout 150#ft. of torque. I have to order some new lug studs... Normally I check them at 96#... That was some serious torque when she stood up!

Mike
How did the lugs get torqued to 150? Surely you aren't implying that the wheelie did that.

Awesome pic.
Old 11-14-2007, 07:24 PM
  #14  
Mikelly
Melting Slicks
Thread Starter
 
Mikelly's Avatar
 
Member Since: Nov 2003
Location: Fredericksburg VA
Posts: 2,555
Received 5 Likes on 3 Posts

Default

Two weeks ago I returned the car from the last track event and
i haven't touched it since then... I torque my wheels to 96# ft. and don't touch them. I had maybe 6 miles on the car before Monday, and I'd retorqued them on Sunday night to 96#ft. so, yea, I think that wheel stand, the repeated wheel hops, and other related launch issued served to impact those studs. Unless you have another solution, I'm clueless as to another explanation.

Mike
Old 11-14-2007, 08:26 PM
  #15  
robvuk
Le Mans Master
 
robvuk's Avatar
 
Member Since: Sep 2004
Location: Los Angeles
Posts: 5,727
Received 4 Likes on 3 Posts

Default

Originally Posted by Mikelly
Two weeks ago I returned the car from the last track event and
i haven't touched it since then... I torque my wheels to 96# ft. and don't touch them. I had maybe 6 miles on the car before Monday, and I'd retorqued them on Sunday night to 96#ft. so, yea, I think that wheel stand, the repeated wheel hops, and other related launch issued served to impact those studs. Unless you have another solution, I'm clueless as to another explanation.

Mike
I guess my next question would be as to how you determined them to be 150? The torque required to break them loose is not the same as the amount of torque applied to tighten them.
Old 11-14-2007, 08:31 PM
  #16  
0Randy@DRM
Former Vendor
 
Randy@DRM's Avatar
 
Member Since: Feb 2004
Location: Burlington NC
Posts: 9,615
Received 9 Likes on 9 Posts

Default

Sorry I had to make the connection.
http://video.google.com/videoplay?do...arch&plindex=6
Old 11-14-2007, 10:02 PM
  #17  
LJD51
Safety Car
Support Corvetteforum!
 
LJD51's Avatar
 
Member Since: Aug 2005
Location: Eastern NC; Retired x 2 (US Army: 70-90 AD) (US Army: 91-16 DAC); yea, I'm old.
Posts: 4,278
Received 76 Likes on 42 Posts

Default

Originally Posted by Mikelly
I can't believe this thing pulled the wheels off the ground and I only got a 12.4@117!

Actually I felt it get light in the front and lifted about 2 milliseconds after this pic was snapped. Almost shart meself!

Mike

Cool pic...

Check your PMs...

Get notified of new replies

To Me lifting the front wheels on takeoff...

Old 11-15-2007, 01:47 AM
  #18  
GT40_GearHead
Racer
 
GT40_GearHead's Avatar
 
Member Since: Feb 2007
Location: Giurgiu
Posts: 273
Likes: 0
Received 0 Likes on 0 Posts
Default

great job mate! the germans would be proud lol


could you post a high res pic ?

i would love to add it to my colection
Old 11-15-2007, 06:49 AM
  #19  
Mikelly
Melting Slicks
Thread Starter
 
Mikelly's Avatar
 
Member Since: Nov 2003
Location: Fredericksburg VA
Posts: 2,555
Received 5 Likes on 3 Posts

Default

I'd love to, but the guy who took it hasn't gotten back to me yet... Trying to buy a high res copy...

Mike
Old 11-15-2007, 12:02 PM
  #20  
Mikelly
Melting Slicks
Thread Starter
 
Mikelly's Avatar
 
Member Since: Nov 2003
Location: Fredericksburg VA
Posts: 2,555
Received 5 Likes on 3 Posts

Default

Originally Posted by robvuk
I guess my next question would be as to how you determined them to be 150? The torque required to break them loose is not the same as the amount of torque applied to tighten them.
Although you're correct, it does take more force to loosen them, my Ingersol Rand cordless impact never has issues breaking anything loose that has been tightened to 100-102#ft. of torque. It wouldn't budge these. I checked them at the clockwise, then counterclockwise for each stud as I was trying to find out what they were torqued to. Based on what I know of bolt stretch, these studs shouldn't take 150# from a torque wrench to break free... It can't be good for them. Regardless, I'm replacing them.

Mike

Thread Tools
Search this Thread
Quick Reply: Me lifting the front wheels on takeoff...



All times are GMT -4. The time now is 07:13 AM.