Previous Thread
Next Thread
Print Thread
urgent help excessive wheelstand #1081919
09/25/11 12:12 AM
09/25/11 12:12 AM
Joined: Feb 2010
Posts: 190
Winterpeg, Canada
H
hvyweight Offline OP
member
hvyweight  Offline OP
member
H

Joined: Feb 2010
Posts: 190
Winterpeg, Canada
I went to the track today and had my best ever 9.21 at 147. The car has excessive wheel standing issues. It is lifting about 3 1/2 to 4ft for about 150-175 ft out. I tried tightening the front shocks but it didn't seem to help. It is a Cal Trac car with QA1's on all four corners. My friend shot a video and front tire is not turning at all. This is telling me that the car is just yanking the tires not pushing through beams. My Cal Trac is in the middle hole in the front. Will shock adjustments front back settle this thing down?

thanks

Mike

Re: urgent help excessive wheelstand [Re: hvyweight] #1081920
09/25/11 12:25 AM
09/25/11 12:25 AM
Joined: Sep 2005
Posts: 1,550
baldwinsville new york
A
a493demon Offline
pro stock
a493demon  Offline
pro stock
A

Joined: Sep 2005
Posts: 1,550
baldwinsville new york

Re: urgent help excessive wheelstand [Re: hvyweight] #1081921
09/25/11 12:52 AM
09/25/11 12:52 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Whats the rear shock setting... also go up on the rear
tire pressure so you get a little slippage plus that
gets you up on the tire which will net a better ET...
when you find the right pressure you will vary it about
1/8 to a 1/4 psi for different track conditions

Re: urgent help excessive wheelstand [Re: hvyweight] #1081922
09/25/11 01:04 AM
09/25/11 01:04 AM
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
hemi-itis Offline
I Live Here
hemi-itis  Offline
I Live Here

Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
Would love to see the vid


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: urgent help excessive wheelstand [Re: hvyweight] #1081923
09/25/11 02:17 AM
09/25/11 02:17 AM
Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
master
gregsdart  Offline
master

Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
Do you run wheelie bars? You may need to. More weight on the nose may be needed as well, considering you can carry the fronts in the air that far.
I know little about caltracs, but can say this; if you have a car set up with the I C too low, it can aggravate wheelstands. the reason is with an I C below the neutral line it wants to instantly drop the rear and lift the front. You say the front tires don't turn, that was my clue.

I made a major change in my car, going from 50/50 to 53front/47rear weight distribution and the car settled right down and allowed the wheelie bars to control the wheel stands without unloading the back tires.
The main thing about moving that much weight is you may need to hit the tire harder to achieve weight transfer, but you will have enough torque to maintain traction so the car won't care how much weight is moved forward.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: urgent help excessive wheelstand [Re: gregsdart] #1081924
09/25/11 07:05 AM
09/25/11 07:05 AM
Joined: Jan 2003
Posts: 16,916
NC
440Jim Offline
I Live Here
440Jim  Offline
I Live Here

Joined: Jan 2003
Posts: 16,916
NC
Typical approaches:
- more front end weight
- stiffer extension on front shocks
- restrict front end travel (I use this to tune for track/weather)
- wheelie bars


1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1
Re: urgent help excessive wheelstand [Re: 440Jim] #1081925
09/25/11 10:33 AM
09/25/11 10:33 AM
Joined: Aug 2008
Posts: 4,049
Mo.
racerx Offline
master
racerx  Offline
master

Joined: Aug 2008
Posts: 4,049
Mo.
Quote:

Typical approaches:
- more front end weight
- stiffer extension on front shocks
- restrict front end travel (I use this to tune for track/weather)
- wheelie bars


What 60 ft. were u getting?

Re: urgent help excessive wheelstand [Re: racerx] #1081926
09/25/11 11:11 AM
09/25/11 11:11 AM
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441 Offline
master
Leon441  Offline
master

Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Judging by the fact the front tire is not turning in the air. You are looking at a change at the rear.

P-body suggested raising the rear tire pressure. I am just wondering with low tire pressure you would get some roll with the front tire as the rear tire is wadding up. Second guessing this you might even try a lower pressure. I still say if you tightened the front shocks. Try front travel limiters as some shocks just don't get it done.

Leon


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: urgent help excessive wheelstand [Re: Leon441] #1081927
09/26/11 02:57 PM
09/26/11 02:57 PM
Joined: Nov 2006
Posts: 92
Manitoba, Canada
70NetRT Offline
member
70NetRT  Offline
member

Joined: Nov 2006
Posts: 92
Manitoba, Canada
Got a few pics of Mike's car on Sunday.

6843308-DSC_0301_sz.JPG (500 downloads)
Re: urgent help excessive wheelstand [Re: 70NetRT] #1081928
09/26/11 03:00 PM
09/26/11 03:00 PM
Joined: Nov 2006
Posts: 92
Manitoba, Canada
70NetRT Offline
member
70NetRT  Offline
member

Joined: Nov 2006
Posts: 92
Manitoba, Canada
A little side by side wheelstand action.

6843314-DSC_0187_sz.JPG (110 downloads)
Re: urgent help excessive wheelstand [Re: 70NetRT] #1081929
09/26/11 03:19 PM
09/26/11 03:19 PM
Joined: Jul 2010
Posts: 791
Bama
Randy.. Offline
super stock
Randy..  Offline
super stock

Joined: Jul 2010
Posts: 791
Bama
hit the tires harder, use the top hole.

Re: urgent help excessive wheelstand [Re: Randy..] #1081930
09/26/11 03:43 PM
09/26/11 03:43 PM
Joined: Oct 2004
Posts: 1,752
detroit area
M
moderncylinder Offline
top fuel
moderncylinder  Offline
top fuel
M

Joined: Oct 2004
Posts: 1,752
detroit area
put a larger torsion bar on the front,,,, it will be harder to pick the front end up

Re: urgent help excessive wheelstand [Re: moderncylinder] #1081931
09/26/11 04:33 PM
09/26/11 04:33 PM
Joined: Feb 2010
Posts: 190
Winterpeg, Canada
H
hvyweight Offline OP
member
hvyweight  Offline OP
member
H

Joined: Feb 2010
Posts: 190
Winterpeg, Canada
We'll got a chance to try a few things on Sunday. Here's the update!

1. tightened front shocks - little to know change went up 4 clicks

2. increased tire pressure 20 lbs - no change

3. raised front of Cal trac bar - it didn't leave as high (good thing) but it didn't feel very stable at the big end and when I lifted the back end was left to right (sway motion)

I didn't get a chance to under the car yet to see if something broke or is bent!

will update later

thanks

Mike







Powered by UBB.threads™ PHP Forum Software 7.7.1