Chassis Guru ??

Hey guys do yall think that front end limiters will help this launch or should i go a different direction ?

here is the video

Quickest way to find out is to try them. If they help....that's great, if they don't just remove them.

Nick,

I remember seeing pictures of the limiters you installed on the car, correct? Post them here again when you can. I need to make some for my car this winter.

Thanks

nick - i installed mine and i can make my car leave with 1-2-3-4-5-6-7-8-9- + inches off the ground - tie the front end down all the way on spray - it will keep the car on the ground -if the car doesnt like it,adjust the limit in 1/2 increments

i have the same set up. the first hard launch it stretched the left side cable through the clamps.

Question: won't tieing down the front suspension take away any adjustments to the front shocks and cause down track traction problems?

Larry Williams wrote:won't tieing down the front suspension take away any adjustments to the front shocks and cause down track traction problems?

Actually both limiters & adjustable shock/strut valving can work together quite well on a lot of cars that have a decent amount of front travel to work with. The limiters control how much total travel is allowed to happen, & the adjustable dampening/valving controls the speed of that said travel.

On a full chassis car with very little front suspension travel, the limiters are usually a waste of time as total travel is already limited, and the adjustable valving of the struts takes care of the rest.

someone made an odd comment about why my car started to dead hook and wheel stand ..this is what he said "The way to kill a wheelie is add power, a wheelie is caused by a lack of power making for to much hook."

interesting comment ...what is your take on that Dave ?

and he goes to add this "its true, add power and get on top of the tire"
'

Ask Blake what happened when he lost 70hp and gained 80#s with the iron CJ heads....................

bruno wrote:what is your take on that Dave ?

I don't think it can be said that 100% of the time situation "A" happening will always result in "B" happening.......and nothing else. There's always a chance for different outcomes to any situation because every car is different. Throwing more power at any given car could result in either more or less wheelstand. It just depends on the car & it's setup.

Imagine a car that has enough launch torque to leave with the wheels up say 4" combined with say about 3/4 initial tire rotation. Now lets say that something happens to kill/remove a given amount of the engine's launch torque so that the car no longer initially rotates the tire 3/4 of a turn, but dead hooks instead. At this point some possible results of the change from a given amount of initial rotation to dead hook from less power are........

(1) if the initial tire rotation was actually "needed" then removing it & causing a dead-hook could result in either a lower wheelstand (engine needed the initial tire rotation as an inertia builder....kind of "running start"). Or it could result in a momentarily higher wheelstand (only from the initial dead hook) that then quickly "falls out of the sky" from the lacking power to keep it in the air (staying power).

(2) if the initial tire turn rotation wasn't actually "needed" then removing it & causing a dead-hook could result in a higher wheelstand with some "staying power" even with the mentioned lower working launch torque because there was still plenty of torque to work with.

So I would have to say that while this person's opinion is a possible result, it's not the only possible outcome, again every car is different. Too many people have added power to cars with differing results as to more/less hook & wheelstand to say that "Y" always happens because of "Z".........

richter69 wrote:Ask Blake what happened when he lost 70hp and gained 80#s with the iron CJ heads....................

Strap 2 iron heads to the top of your roll bar and see what happens

Thxs Dave for the explanation .... im going to strap the front end down and go from there and if that dont work i have a digital 7 i can pull timing off the leave

Some Ideas..

Moviing IC will lessen wheelstand.. Are we are looking at one car or a few. I say that because of the varibles of wheelbase ect..

So lets talk IC, AS.. along with the rest of the information in the thread.. Very interesting by the way! Thanks Nick!

Tie the front end down...

















If that don't work grow a bigger set!

Tie that thing down......and put some power to it!! If it spins, loosen it 1 hole at a time.........and hang on..

so if i tie this sucker down ...whats going to happen if i just run on motor ?? will it just blow the tires off ??

IF IT DOES LET OFF and move a hole until you find where you like it and the car likes it sometimes it take a little adjustment and sometimes it takes alot adjuments but you have to start some where heres a vid of rick's rx7 finely got it leaveing right

good looking pass there

69F100 wrote:IF IT DOES LET OFF and move a hole until you find where you like it and the car likes it sometimes it take a little adjustment and sometimes it takes alot adjuments but you have to start some where heres a vid of rick's rx7 finely got it leaveing right

What did it run? I couldn't make it out.

5.69 in the 1/8 he runnig 4.86 gears to much for the 1/4 he had put 4.33 in it but still run out before the 1/4 about 3/4 track and ran a 8.92 at 151.8 mph he got to get the air bleeds right in it on the top end it is leaning out to much he got to get with pro systems on the high speed air bleeds it didn't run good that outing but has run 5.603 at 126 the time before that so we fatted it up and now got to get the air bleeds right now don't want to burn a piston or anything its a 557bbf with tfs 460a heads with a 1250 pro systems carb N/A