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Author Topic:   help with rayburn
jpotter94
Dirt Forum Racer

Total posts: 94
posted May 03, 2005 03:18 AM  
i have a 1997 rayburn late model that i run.it is swingarm on both sides with the rayburn panhard bar and a pullbar..the car goes well but it has a severe push coming off the corner.i have jacked weight in the right front and left rear to try and help this,i think it has gotten worse.i was told that i need to take weight out of the right front and left rear,is this true.any help or other recomendations greatly appreciated..

rocket36
Dirt Freak

Total posts: 209
posted May 03, 2005 05:03 AM  
though i have no experience with a swing-arm car, i would say that, yes you should try reducing your "right front-left rear" wedge, to help your turn exit push.

zeroracing
Dirt Forum Champ
Total posts: 1876
posted May 03, 2005 05:56 AM  
To fix the severe push on exit take wedge out of the car, adding wedge will only make the push on exit worse. taking away the wedge will tighten up the entry though, you could try to go with a stiffer rr spring and a softer lf spring, this will keep the car about the same on entry and free up exit.

jpotter94
Dirt Forum Racer

Total posts: 94
posted May 03, 2005 10:24 AM  
thanks alot for the help guys..

zeroracing
Dirt Forum Champ
Total posts: 1876
posted May 03, 2005 06:23 PM  
What track are you running it at? Also what is your rear bar angles, you could need a bar change to help the car also.

KeimRacing
Dirt Roller

Total posts: 22
posted May 03, 2005 10:46 PM  
If you are running Rayburns basic setup off his website, I guarantee you your push is mostly a side bite issue. Especially if your rearend is locked.

My recommendations:
Make the car stick...500# right front is way to stiff even for a steel block.
Soften up your RF spring to a 400 or 450...RR spring 200 on swing arm...LR stiffen to a 400# spring and...LF to a 550.
Mount J-bar on left side frame at 8" from bottom of frame to center of bolt on bracket...and 1/2" below on pinion on right side pinion bracket. Should be a 19" j-bar.

Shorten up Right Rear radius rod...to gain some roll steer to help the car turn off.
Leave front swing arm lengths spec. Do your adjusting with the rear radius rods.

Keep front ride heights rayburn spec. Very important. If you have silver spindles on both fronts LF ride height is 1 15/16". Charcoal left front is 2 1/8".
Left Side-53%-to much LS makes car skate up.
Rear-56%-to much rear will make the car push.
LR bite-150#
5" of rear stagger

Raise the rear ride heights up to create some more overturning mass. This will also take angle out of the pull bar and take some of the lifting of the nose away which will plant the front tires better when on the gas from the center out.
Mount lead on passenger side bar up high on the top bar straight across from driver.

Jason

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