suspension and ignition setup need help

Alan Roehrich · 08-13-2016, 01:49 PM

Quote:

Originally Posted by HandOverFist

http://www.supercarraces.com/2010rules.html

According to those rules, his upper arms are not legal.

13.01 Traction devices are limited to hop stop bars for upper control arms on coil spring cars.
13.02 Upper and lower control arms on coil spring cars must be correct.

From his OP: In the rear UMI adj. uppers, boxed lowers stock springs and sway bar and double adj QA1s.

So, evidently, the rules have changed.

Alan Roehrich · 08-13-2016, 01:54 PM

The no hop bars may allow you to get better geometry than the adjustable bars by themselves. (the rules seem to say adjustable upper arms are not legal, if they are, I wonder what else that appears to not be legal actually is?)

Have you tried changing spring rates on either end of the car?

The timing curve adjustments on the MSD to allow you to launch with low timing and bring more in will simply be a matter of testing. There may be someone who can give you a better starting point than you have, but the only way to get it dialed in is to go rent the track and beat on it, to see how much timing can be brought in and how soon.

HandOverFist · 08-13-2016, 02:02 PM

Leaving at idle or stalled? Not hitting the tires hard uncertain if adjustable shocks are any benefit. Do they allow deep stage at these events?

Woodfin · 08-13-2016, 02:55 PM

to me, the largest handicap to overcome is the tire. ANYTHING that you can do for a "sticky" tire will be a huge help.

Experimenting with the above mentioned suggestions AND a better tire holds potential to greatly increase performance.

Woodfin · 08-13-2016, 02:59 PM

and speaking of weight, ANY weight removed from driver forward is good. If you remove 10 pounds from the front, add it back to the rear.

A "ballasted" trunk lid is good. [meaning adding weight high and rearward]

08-13-2016, 01:54 PM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,826 Times in 414 Posts	Re: suspension and ignition setup need help The no hop bars may allow you to get better geometry than the adjustable bars by themselves. (the rules seem to say adjustable upper arms are not legal, if they are, I wonder what else that appears to not be legal actually is?) Have you tried changing spring rates on either end of the car? The timing curve adjustments on the MSD to allow you to launch with low timing and bring more in will simply be a matter of testing. There may be someone who can give you a better starting point than you have, but the only way to get it dialed in is to go rent the track and beat on it, to see how much timing can be brought in and how soon. __________________ Alan Roehrich 212A G/S

08-13-2016, 02:02 PM	#3
HandOverFist VIP Member Join Date: Oct 2013 Location: Gulf Breeze, FL Posts: 1,651 Likes: 8 Liked 33 Times in 16 Posts	Re: suspension and ignition setup need help Leaving at idle or stalled? Not hitting the tires hard uncertain if adjustable shocks are any benefit. Do they allow deep stage at these events? __________________ Rich Taylor I/SA - 321 Last edited by HandOverFist; 08-13-2016 at 02:05 PM.

08-13-2016, 02:55 PM	#4
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 538 Likes: 8 Liked 277 Times in 107 Posts	Re: suspension and ignition setup need help to me, the largest handicap to overcome is the tire. ANYTHING that you can do for a "sticky" tire will be a huge help. Experimenting with the above mentioned suggestions AND a better tire holds potential to greatly increase performance.

08-13-2016, 02:59 PM	#5
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 538 Likes: 8 Liked 277 Times in 107 Posts	Re: suspension and ignition setup need help and speaking of weight, ANY weight removed from driver forward is good. If you remove 10 pounds from the front, add it back to the rear. A "ballasted" trunk lid is good. [meaning adding weight high and rearward]