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Author Topic:   Lift Bar
Dennis Krause
Member
posted November 30, 2003 04:33 PM
I'm thinking of changing from a pull rod to a lift bar this year.

Has anyone tried rubber biskets on both ends of the bar to absorb both torque and braking forces. Think about it. 600 ft/lbs of torgue. 36" in front of the rear end is only 200 lbs. The spring on the coil over eliminator, plus all that weight seems like overkill. Also, isnt it desirable not to loose too much pinion angle on acceleration?

Next thing, has any one got an opinion on locating the bar to the right or left of the driveshat centerline. I have always mounted the pull bar just to the left of the driveshaft, thinking it will would load the left rear and provide better bite off. I was told that the theory on a lift bar is to mount it to the right, so as to lift the car, and keep it from rolling over in the corner, thus keeping the left rear planted. ANY THOUGHTS?????

ratracer10
Member
posted December 01, 2003 07:39 AM
Thanks for the response. I never heard that about matching side to side mounting of the lift bar with left side percentage. There are some good tech articles floating around on pull rods, but nothing on lift bars. Did you read that somewhere or is this your personal theory?

I have talked to some guys that think the lift bar is more forgiving, but may give up some forward bite on the dry slick. Basically I just like to try new things. Thats also why I asked about eliminating the spring all together and just using rubber biskets.

#46
Member
posted December 03, 2003 07:19 AM
Read the post "angle pull bar to right" in this section. I think it may shed some light on the subject for you. http://www.thedirtforum.com/cgi-bin/postdisplay.cgi?forum=Forum9&topic=003136


ratracer10
Member
posted December 03, 2003 11:53 AM
I read this somewhere but don't remember where, I've done a lot of reading. It made sense to me for the end connected to the chassis, it will lift the car evenly and on unload one side more then the other. However, on the end on the axle it would load the tires unevenly unless it was mounted in the center, this may be good or bad depending on what you want. I can’t say as far as which is better, but I’m leaning toward the pull bar. It seams to me that with a lift bar when you move the link forward or back on the chassis you are changing two variables, the amount of lift and location (front or rear tire weight). This is what I think my friend that has run both was describing about the lift bar. You change both bite and “steering grip” (weight on front tires) with one adjustment.

This one is just my theory though. So if anyone has a better one I’d like to hear it.

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- When in doubt, hit the gas.


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