High Left Side Percentage On A Wisota Mod 4

[Wild Blue 32]

I bought a new chassis from a chassis builder just getting into building MOD 4 Chassis. When I got it put together it has over 57% left side percentage and is heavy enough so I don't need to add weight. The chassis builder has built a lot of successful full size modifieds. Having such high left side weight when I set it up with 60 pounds of bite it is only 46% cross. Should I worry about the cross percent? The only time I've had it out it was so tight it was undrivable. I'm looking for suggestions. Is this too much left side percentage? By the way this is on dirt. Thanks.

[jsf74]

I was told not to worry about cross
My car is at 46% also.

[Dirt36]

In the slick that much LS % may present a problem and make the car tight on entry. Off the top of my head I believe my mod is around 52% without me on the scales roughly 53.5-54% with me.

[jsf74]

Yes I should say my cross is 46% but my ls% is 54.5 with me in the car.

[Iowamod20]

Is the 57% with you in the car? I would hope so.

That being said, you can make the car work good. You can't compare "bite" numbers with the normal ones you hear from other drivers/car mfg. though. With more left and that low of cross, you will be way too tight on entry, which will screw you up for the rest of the corner.

The more cross you add, the looser it will start to get getting in (assuming you use more rear brake than front). Don't look at the "bite" number anymore.

[Wild Blue 32]

Yes it is with me in the car. We can't run brake bias adjusters so the only way for me to use more rear brake than front is use engine braking. I'm gonna try a lot more stagger and maybe a lighter rear spring. And maybe 0 bite.

[speedbuggy]

With cross% that low and left side that high, your right rear is supporting 60%-70% of the static right side weight. Unless you've really got a soft RR spring in it, your RR is getting hammered into the track on entry and the RF is hardly getting any weight transfer.

I'd start jacking bite into it until it loosens up getting in. If it becomes too tight getting off the corner then, reduce LR spring rate and/or less bar angle.

With that much left side %, you may need 200+ pounds of bite. It's not really the LR that needs the weight, it's the RF.

[Wild Blue 32]

My springs are LF 275 RF 300 LR 100 RR150. Should I maybe try a 125 in the RR and jack the bite up to 150 or so?

[johnny v]

I must not be reading the first post correctly, but high LS % in the slick will make you loose on entry...

[JHobbs26]

if you need more rear brake bias, run a more aggressive aftermarket pad like a hawk and run cheap stock pads up front.

[speedbuggy]

My springs are LF 275 RF 300 LR 100 RR150. Should I maybe try a 125 in the RR and jack the bite up to 150 or so?

IMO, this would be two steps in the right direction.

[Anonymous24]

Those are some low spring rates.

[LFMotorsports]

Just an idea, but try putting some rear steer by trailing the RR more. That will free the car up and balance it out with LR drive. Something to think about.

[RACEMAN]

I think I'd go back to the builder and try to straighten this thing out. Sounds like he built a pavement car instead of dirt. A brand new car with THAT MUCH LS %? Sorry, but I think you've got a bit more of a problem.

[Wild Blue 32]

Anonymous, the total car weight is only 1735. I have about 1/2 inch RR trail now. I was thinking about increasing it a little. Thank you everyone for your advice. I'll post how the changes work.