pro/con: lower weight or better weight percentage in IMCA sportmod?

[setup479point2]

I guess my question would be , why do you want less left and more rear ? Those numbers aren't that bad .

[regor]

I race at a semi banked quarter mile and talking with other drivers, I had more left and less rear percentages than them. So that's what got me looking into tweaking the scaling.

[let-r-eat]

What's your handling issue?

[regor]

The car is usually a little loose in, then it pushes in the middle. I end up having to get off the gas a lot so I lose a lot of time in the corners

[regor]

Thats part of the prob. I have almost 150 lb LR bite.

[7uptruckracer]

I think sport mods are in the 50-100lbs range, last time I looked at a setup baseline for the ones I help

[regor]

7uptruckracer, thats what I understand too. So to get down to that level, I didnt know if there was anything I could do besides adding ballast to the RR to get down to that range.

[regor]

what do I do to get the LR bite down to the 20-80 range?

[let-r-eat]

You braking the car?What does it do if you enter without brake?

[regor]

stock car driver: I have played with the weight jacks in the back a little, but I have not sat on a scale to see what it does. Do you turn the weight jack in or out on the RR and/or LR to get the LR bite down?

let-r-eat: I do brake going in, but I do it pretty late. If I just try to let off the gas, it pushes going in.

[clbaker25x]

regor,I would recommend jumping on the dirt forum. I have put quite a bit of our setup informaiton on there. We normally run quite a bit more bite as a baseline than what these guys are recommending. Key is your entire setup has to work together. I am a big believer in freeing up the car on entry and then making plenty of forward bite off. Just need to have the motor to pull it, and it also depends on whether or not you are running a crate or open motor. Shouldn't need as much bite with a crate motor because they generally run quite a bit less gear than an open motor. PM me or give me and we can exchange information and I can give you more help if you want it.Where do you race? Good luck!BBR (Baker Brothers Racing) Motorsports

[killer bee]

stock car driver is giving you some good advice. my question is: how do you know you have 150lbs of lr bite if you haven't had the car on the scales and you have been adjusting the rear weight jack bolts? Get the car on the scales and record how it is now. then adjust like stock car driver told you.

[regor]

killer bee: I had the car on the scales. Thats how I knew my weight percentages and LR bite. But I did not adjust anything while it was on the scales - just put it on the scales, recorded the numbers, and left. My bad. Next time I will do some adjustments while on the scales to see how the numbers change.

[killer bee]

sorry, I misread your post. here is a link to an adjustment sheet that might give you a little help also. good luck.

http://www.larryshaw.com/printablesetupsheet.pdf

[clbaker25x]

Northern Sportmod Setup

sorry, I misread your post. here is a link to an adjustment sheet that might give you a little help also. good luck.http://www.larryshaw.com/printablesetupsheet.pdf

I am a huge believer in this sheet. The big thing we have found that is different is that with only 2 bars instead of 4 things are more of a balancing act. Your right side bar basically acts like the right side lower bar. Your left side bar generally acts like the left side upper bar. If you use this as a basic guide your car is going to be fast most nights.