center off no forward bite

[charlie115]

4 bar car 550 lf 450 rf 200 lr 175 rr 80 bite car is ok in heat were its tacky but when its slick I have problems with forward bite. I run a short bar with 7 inches of split. bsb black shocks 3 degrees at full drop. rrl is level with rru up 2 holes. its a 2012 grt. 1 inch stager in front and rear, and tires are siped to hel. any help?

[charlie115]

forgot to add. I add 3 rounds to the car and its good.. 4 rounds and it gets tricky for the driver. its either spot on or shears the corner. and thanks again charlie

[washeduptoo]

I would increase that rf spring and where are your lr bars at full drop and how much of a drop from ride ht to full drop in inches? Best of luck.

[Anonymous24]

Sounds like a balance issue

[charlie115]

5 inches of drop

[charlie115]

lrl up hill slightly lru is at 45 degrees at drop

[charlie115]

what do you mean by balance issue? how do I fix it?

[washeduptoo]

Go up 50 on rf and see if its any better or try a spring rubber in rf. Do you have a hold down shock on rf? Is car good on entry?

[Anonymous24]

By balance issue I mean that weight distribution is not tranfering correctly. The CORRECT fix will take much time to establish. I'm more than happy to help with your situation. Contact me via PM and we can discuss this more. All the answers I have seen here are quick adjustments that may help some, but they are just masking the root of the problemThanksZach

[charlie115]

car is a hair loose on entry but driver like that. just as soon as he picks up throttle rears spin. ive tried up to 550 straight across but car gets tight on entry then. and yes rf tie down shock.. thinking that might be my problem

[washeduptoo]

Try a more compression, less rebound shock on rf to see if that will help. Do you have multiple holes on lrt bird cage, if so try going down toward the axle tube. What are you running for a pull bar?

[charlie115]

running solid bar. keep snapping the others. will try lru bar tomarrow

[washeduptoo]

Are you required to run a solid pull bar? If not, that is the problem. We buy a dom tubing to use for a pull bar and are you running a dampner shock on top of rear end?

[let-r-eat]

I don't know how short your short bar is but I'd cut the split down. Split isn't always a good thing for traction.

[charlie115]

yes im running a 90-10 shock.

[washeduptoo]

Are you breaking the swedge tube if that's is what your using?

[oldtrackchamp4x]

In your second post you say you add 3 rounds lr and car is good. Add four and it isn't. Maybe your driver is not changing his driving style for the slick track. You may try putting a 1/2 in spacer on the lr or drop air pressures to RF 12 RR 10 LF 10 LR 8. Or have him try backing the corner up when slick Only try one at a time. JMO

[charlie115]

lf 10 rf 14 lr 10 rr 13 on slick,, moved the lru down this weekend and added the 3 rounds but car seemed too tight. the car lays over hard on right front. just wondering if I might be collapsing rt front spring,, 450.. or am I over adjusting car? thinking about changing rt front shock.. any sujestions?

[oldtrackchamp4x]

You may be over adjusting the car because you are making more than one change at a time. Make one change only, if that doesn't work put it back where it was. If it helps somewhat, keep it and try the next change and so on. How much shock travel do you have left on the rf? 1/2 to 1 inch is good on dry slick. You said "car seemed tight". Was it, or once again is it the driver? Sounds like you had the car real close on your last post so just make a small change each time. Also was the track surface the same as the last time you raced? JMO

[mudeater18]

just as soon as he picks up throttle rears spin. A solid pullbar will cause this. If I understand correctly, you mean no rubber and no spring ? If its breaking a good heavy DOM pullbar tube you have something binding under load. You won't find a mod with a solid pullbar anywhere unless the rules require it. That's the reason sportmods require a solid pullbar is to limit traction.

[DirtRacer9x]

A solid pullbar will cause this. If I understand correctly, you mean no rubber and no spring ? If its breaking a good heavy DOM pullbar tube you have something binding under load. You won't find a mod with a solid pullbar anywhere unless the rules require it. That's the reason sportmods require a solid pullbar is to limit traction.Your statement of no solid pull bars around would be incorrect. I've seen a couple guys with crates running them. One is a past champ as well.

[mudeater18]

Your statement of no solid pull bars around would be incorrect. I've seen a couple guys with crates running them. One is a past champ as well.I stand corrected. I'll change my statement to 99.9% instead of all !
Is he competing against open or A class mods and doing ok ? Is he on a 4 bar?
I guess there's always somebody running something different and doing OK with it, but it's definitely not the norm.
I still say if he is having trouble breaking the tires loose immediately under throttle, a solid pullbar is not what he needs. Just my opinion I guess.

[DirtRacer9x]

The top 5 at this particular track were well known in IMCA and all had different set ups from springs to brake floaters, pull bars, motor offset and height coil over LR to split shock and slider RR. They were all different and all up front with completely different set ups. One guy running a 450 rf while another at 700 and running the same times. So there is no magic set up in my eyes but making what you have work is key. Heck 2 guys broke off the rf shock in the top 5 too.