STARTING LINE LAUNCH FOOTAGE

Suspension Tuning, Troubleshooting, Design and Discussion

Moderators: David Lemmond, Dave Morgan

Message
Author
User avatar
rsracer
Posts: 20
Joined: Tue Jan 16, 2007 9:07 pm

#16 Post by rsracer » Mon Jan 22, 2007 7:03 pm

Also what gear are you using. I noticed you are running 28w's.
I have a stock susp. Mustang. I am trying to get my 60' down as well. 1.23 on 28 x 10.5 is fine but 1.32 on 26's in what I am working on 3220lbs with 1650 on front tires.

User avatar
John_Heard
Site Admin
Posts: 5734
Joined: Thu May 12, 2005 11:20 am
Location: Resume Speed, Kansas
Contact:

#17 Post by John_Heard » Mon Jan 22, 2007 8:56 pm

rsracer wrote:Beyond,
You need a progressive. What is your cars weight and front / rear?
How much front travel are you running? hOW MUCH PINION ANGLE are you using?

Also what gear are you using. I noticed you are running 28w's.
I have a stock susp. Mustang. I am trying to get my 60' down as well. 1.23 on 28 x 10.5 is fine but 1.32 on 26's in what I am working on 3220lbs with 1650 on front tires.
It does have a progressive, in hind sight I should have launched on that instead of the plate. For our class rules we have to weigh 3450 and the car had 51% of that on the nose, on that pass it had a 3.50 gear in it. Pinion angle? Somewhere around 3* negative.

ccjohn2
Posts: 49
Joined: Mon Jul 10, 2006 1:01 pm
Location: NW INDIANA

#18 Post by ccjohn2 » Mon Jan 22, 2007 9:36 pm

I'm in the process of installing a large cuin engine with 2 stages. Got some guys around me talking junk. They don't think I'll be able to hook the car that's why I am asking for info on how to hook. So the basic Caltrac setup should suffice is what you're saying? No extras. As far as the progressive system goes - which progressive unit are you using? I've read about many.
WISDOM IS USUALLY ASSOCIATED WITH OLD AGE BUT YOU DON'T HAVE TO BE OLD TO BE WISE.

User avatar
John_Heard
Site Admin
Posts: 5734
Joined: Thu May 12, 2005 11:20 am
Location: Resume Speed, Kansas
Contact:

#19 Post by John_Heard » Mon Jan 22, 2007 10:36 pm

I don't know of anything better to use on a leaf spring car than the cal-trac setup. If there's something better I haven't heard of it yet. I'm using a Highpower direct port system and a old NOS big shot plate, I'm changing the system this year to an all Highpower system and will be testing some new things that have just came out.

Racer704
Posts: 166
Joined: Thu May 12, 2005 9:23 pm
Location: Raleigh NC

#20 Post by Racer704 » Tue Jan 23, 2007 4:26 am

CCJOHN

If you need some help with your N2O let me know because I helped John with his progressive set up and I am more then willing to help anyone also.Its not cheap but has a life warranty on components.

If your going to run a large ci engine then 1 stage with 4 to 500 with a progressive should be enouugh. Its not cheap but in the long run I think you will be happier with it.If you want more we can set you up with a larger single stage up to 1000 with 4 pairs of noids and the new progressive will have 5 power setting working with time and rpm.

I dont know how soon you need it but if you can wait till mid spring we should have some good data from John on some new products we are launching as he will be doing the testing for us.
Johnny B.

Racer704
Posts: 166
Joined: Thu May 12, 2005 9:23 pm
Location: Raleigh NC

#21 Post by Racer704 » Tue Jan 23, 2007 4:27 am

Hey John what RPM was your car at when you lifted off the line on that last pass and what did you leave at also?
Johnny B.

User avatar
rsracer
Posts: 20
Joined: Tue Jan 16, 2007 9:07 pm

#22 Post by rsracer » Tue Jan 23, 2007 6:32 am

The highpower website says the solenoid can flow up to 250, is this true?

How am I supposed to spray 400+ on a plate?

User avatar
John_Heard
Site Admin
Posts: 5734
Joined: Thu May 12, 2005 11:20 am
Location: Resume Speed, Kansas
Contact:

#23 Post by John_Heard » Tue Jan 23, 2007 7:33 am

Johnny, the motor was at 6222 when I lifted .45 seconds after launch, left at 4000 on the chip.

Rsracer, best I've got out of mine is about 200hp per solenoid. Those have adjustable seats which you can mess with to increase flow a little but it screws up how well they can pulse. Johnny's the man on that stuff, you might PM him if you want details on those noids.

I don't see why you can't spray 400 on a plate? There are a number of approaches such as progressives, launch retards, or even two staging the plate.

User avatar
rsracer
Posts: 20
Joined: Tue Jan 16, 2007 9:07 pm

#24 Post by rsracer » Tue Jan 23, 2007 3:05 pm

The class i run only allows for one nos solenoid and one fuel solenoid. I'll stick with the traditional stuff

What is your exact combo in that nova(motor & trans & converter), and what is the best 1/8 et and mph you have had?

I assume it is a nitrous only ride?

User avatar
rsracer
Posts: 20
Joined: Tue Jan 16, 2007 9:07 pm

#25 Post by rsracer » Tue Jan 23, 2007 3:46 pm

51% front weight .... NO WONDER!!!!!!!!!
I run 52.5% on the front and i can get it to go to the bumper when ever i want. I can only use about 1.25" of travel and the struts on full stiff for 28's to keep it on the ground.
Never have run the qtr with the BBC in it, but it runs 5.20's on the plate in the 1/8 th on 28's.
Runs 5.40's on 26 x 10's on a plate.

Racer704
Posts: 166
Joined: Thu May 12, 2005 9:23 pm
Location: Raleigh NC

#26 Post by Racer704 » Tue Jan 23, 2007 7:13 pm

I have some that flow 400, and out of the plate it wont have any frictonal loss like in Johns set up. Good Luck with what ever you do Sir.
Johnny B.

ccjohn2
Posts: 49
Joined: Mon Jul 10, 2006 1:01 pm
Location: NW INDIANA

#27 Post by ccjohn2 » Wed Jan 24, 2007 9:19 am

I am using a fogger and plate - was going to turn one on the pedal with a timer and the other with a button on the steering wheel. I've been lucky with lengthening the solenoid feed lines to lessen the hit the system makes to get the car down the track(plate systems) guess I wont have that luxury with the fogger system. I'm figuring somewhere in the neighborhood of 500hp between the two. How are you guys using the two systems together? Plate first and then the fogger or vice-a-versa? I've heard different theories on this. Enlighten me.
WISDOM IS USUALLY ASSOCIATED WITH OLD AGE BUT YOU DON'T HAVE TO BE OLD TO BE WISE.

Post Reply

Who is online

Users browsing this forum: No registered users and 14 guests