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Author Topic:   Pullbar length and angle
PEDDLER
Member
posted November 11, 2002 06:51 PM
How does the pullbar length, angle, and spring rate affect bite.

A. Length
B. Angle
C. Spring rate or bisquit


jklostermann
Member
posted November 11, 2002 10:03 PM
Well we run a rubber biscut pullrod so there is not much rate change we can make. However if you want your car to look like one of those late modles that suck there left rear tire up under your seat put a lot of angle in it. This will give a heck of a lot of forward bite but it will also make your car tight. REAL TIGHT! However if you can find out how to make your car work good with a lot of pull bar angle you'll be in good shape. Oh yeah if you figure it out, and you run on a real tacky track your better hope you have big motor to be able to use all that bite!

[This message has been edited by jklostermann (edited November 11, 2002).]

Delane_7
Member
posted November 12, 2002 05:19 PM

I used to live in La.,I thought I was fast
too,until I moved to the midwest.13 wins there is like wining two heat races in Iowa.


CUSTOMPERFORMANCE
Member
posted November 12, 2002 09:59 PM
Peddler all 3 things affect bite. You have to find a happy medium betwen all 3. Short pullbar (20") or so will roll over and bite more quickly than a longer one but the short one can be more erratic and sensitive. Most i have seen and built are around 30" or longer mounted around 15-20 deg down hill and centered or slightly to the left of center. Spring rate is more of a fine tuning tool after you get the other 2 things close to where you like the car. I run a 600lb spring most of the time but am getting a 700lb because the car i have is too tight when the tracks start out in the beginning of the year with the 600, i have determined this after making several other minor adjustments to loosen up the car, by going to a stiffer spring the pullbar will come in sooner than a lighter sring.