Can't keep the front end down on launch
 

Neve thought I would have this problem but here goes.

Car is about 3350 race weight. QA1s all around, Full BMR suspension, LCA in the middle hole, 300 lb springs in front, stock springs in rear, TH350 TB.

When I launch off the TB the front end comes up about 2-3 feet. I have tried to set all of the shocks stiff (10+) and have had up to 23 lbs of air in the 28" ET drags. Still comes up a lot.

It looks cool but is costing ET.

What can I do?

travel limiters. MadMan/Thunder Racing can hook you up!

trade me cars lol

:funny: Good answer.

I saw a few of your launches, it's a nice problem to have. Basically all you can do right now is travel limiters because you already tried stiffening up the shocks and putting more air in the slicks.

Dang I wish I had an automatic? You can't beat one thats for sure?

Sure those front shocks are working, on '10' my car just spins the tires and doesnt move. I usually crank the shocks full stiff when I tow the car, look at the 1/8 mile vid in my sig - thats what happens when I forget to loosen them on the first pass :)

But travel limiters or maybe try the LCAs in the stock hole if your car sits up high.

Soften the converter "hit".

Different ways. adding weight to the nose, pulling some timing to reduce the amt of TQ being produced, or change the exhaust so it produces less TQ, and getting the TC softened some might work.
The only thing I like about any of those options is the tuning and possibly the exhaust.
Have you tried lower RPMs on the TB?!

I just assume people are using a 2 step and have tried different RPM launches but you are right. You can play around with the two step RPM and keep the car down as well most of the time.

I got to assume that footbraking the car you do not have this problem, that is why I would try a lower RPM on the TB.
If you are bracket racing then you will learn quickly how much this affects the 60' and then know how to adjust the dial in, considering all of the other factors, LOL.

Travel limiters are the best route....

Lee Spicher
lee@bmrfabrication.com
(813)986-9302

I agree on the travel limiters. Jugger had really good luck with them. They are decently priced too if you go with Madman's.

http://thunderracing.com/catalog/?ac...id=166&sid=751

if travel limiters dont work...thats what wheelie bars are for. sucks on a street car but maybe the only way.

Travel limiters.

Steve you have a 2step? You should email Jugger and get his thoughts.

Travel limiters is what u need, wolferacecraft sales them for like $45



http://www.wolferacecraft.com/images/trvllmsm.jpg

Dont sacrafice the launch with lower rpm or a softer hit just put the limiters on or try moving allitle weight from somplace else on the car to the front.

Yeah, I highly recommend everyone playing with their 2 step RPM's. I launched mine at 3800 when I was first learning my car then when I turned it up to 4600 my car actually lost some in the '60, it picked the wheels up higher but when I leave at 3800 it picks them up 1-2 feet and holds them there for ~45 feet. My best 60 at 4600 was a 1.309, best at 3800 is 1.259. The car loves coming up on the converter and I get less height and but more time in the air. Cheap and easy way but everyones car is different and you may have tried this already.

ive never really understood how a 2step worked, and i cant find a good thread on it, could someone please explain??