Looking for a leaf spring set up?????

[imracin68j]

Bind

Towing the front of the spring in too far with a FB spring creates a bind forsure. I had problems this year getting the car to transfer to the rear. The towed springs create anti-sqwat which is good to a point. But with a stacked leaf I think you need to be careful as you can create a car that does not rotate and hovers rather than digs.

[Dirtrunner35]

This may help. http://www.landrumspring.com/pages/l...ical&newsno=15

[Clayhugger]

Hi, trying to get some info on the fast boys base setup as I am new to this setup.
What front springs are best for the base setup & do you run the front springs with the heavier spring in the LF or RF?
Do you run the wheelbase straight up or do you run the RS longer do to the LR walking rearward under acceleration?
What is the best mounting point for the leafs on the rearend? Do they work best mounted closer to the hubs or does it matter?
Does it help to run the pivot bushings in the front leaf eye or is the rubber bushing better?
Any info would be greatly appreciated, Thx

[HMS27]

Question

What if you ran single mono leaf springs on the rear with coil over sliders/eliminators? mount one in front of the rearend and one behind? anyone ever tried this? ......would you have to run a panhard bar to keep the rearend under the car side to side? Kinda like a half breed 3 link without a pullbar?

[Dirtrunner35]

I had a mono leaf mod with the fast boy set up. I did what the post said to do and couldn't get any side bite, so I made my own and fixed the side bite problem. I put the RR spring on the leaf spring mount and not the axle.I also had to put another half spring on the RR in front to keep the mono leaf from bending.I recommend putting the coil spring on the axle. On the left side I put the coil/slider on the spring plate behind the axle, and 2 other front halves of a leaf spring on the left. The car had side bite and GREAT forward bite. I had no pull bar and no upper shock.

[HMS27]

Thanks Dirtrunner...

[protruck83]

switch

Hi everyone I have made the change from the 2 stacked leaf to the mono with a slider and a coil eliminator on the rr but I can not get this thing to scalee right it shows -100lbs bite here are our numbers keep in mind we have to be 3000 Left 1525 55.27% Rear1410 51.10% Cross 1134 41.10% L/F870 R/F479 L/R655 R/R755 Total 2759 W/O Driver and half a tank of fuel Does this sound right I'm just nervous with the -100 lbs bite

[slim10]

after seting my car up to the fast boys my cross was at 46% is this what you want for cross? scott said to run 100 of bite at rr

[Dirtrunner35]

That what he says to do so try it, I had a little left rear with mine and it was a little too tight.

[DaveBauerSS6]

after seting my car up to the fast boys my cross was at 46% is this what you want for cross? scott said to run 100 of bite at rr

Depending on the mechanical bite you have in the LR, the RR bite will vary. You are in the ball park. Use the RR bite to tune with.

[slim10]

thanks dave have you ever experimented with a soft spring rf with a leaf car.the setups from leaf chassis builds all put in a 850 to 900 in the rf and a 750 in the lf.2500 car

[sj valley dave]

When we ran a RR floater and a FB LR set up a few years ago, we tried a 750 RF and a 800 LF on a big momentum 3/8 mile, El Centro, and it worked really well on that track. It dried out and we took some stagger out and shot ourselves in the foot as it got an acceleration push then. We found that you had to run stagger with that set up to help keep the acceleration "tightness" out of it. That was with Dirt Bozzes though...

[DaveBauerSS6]

I ran the FB setup only for one season, was outlawed . Like Dave said it is very fast at one point, and very undependable if you miss it. Never seen anyone hit it consistently. The most predictable nite I had was when Ron Capps the funny car driver ran my car and I detuned it for him. He was moving up to maybe second when he was taken out. I ran 900 range on the leafs.
The metric car is in the 700-900 range. I like the weight transfer front to rear and vise versa.
I'm still suffering from brain damage and plan on running a soft spring setup in a IMCA nova. We'll see. At 2500 lbs you could go softer. My test is drop springs until I get 4 inches of front shock travel. Front geometry goes to junk after that.
The softer spring will travel over the rough track better. I've also found you can tune with the shocks better on the soft spring. Also depends on the driving style. Very aggressive, hard on the brakes will take more shock and spring.
Good luck.

[slim10]

the guys I have helping me are bar racers.They say its not rolling onto the right front going in.Do I want this with leafs?will unbanding the right rear help the left bit more off?rules are just leafs no dampner shock or pullbar.I can use lowering blocks and slider mounts.I read mounting the shocks 3 to 4 inches from the axle will help dampen axle rap right behind left in front.I have a slider on the right and a long shackle on the left.I have a afco 166 rr and a landrum 175 lr I think Im a little light on the left so I thought about adding a half leaf to the front of the left rear any thoughts there.

[kakahehe0008]

D?ch thu?t Ph?m L? Gia úp cho b?n, chúc b?n bán d?t hÃ(not a nice word)ng..