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Old 08-22-2005, 02:22 PM
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reversed corvair box or vega for my t-bucket?

Iv heard a lot about people having lots of bumpsteer on cars suing the reversed corvair box setup. is this true, or is it not bad at all? how dose it compair if i where to use cross stearing and a vega box? thanx!

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Old 08-22-2005, 02:29 PM
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Cross steering and Vega box is the way to go if you are not going to use a rack and pinion. I am using a Mustang box on my coupe and side steering, I had to put a panhard bar on it to cure it.
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Old 08-22-2005, 02:52 PM
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cross steering was my first choice, but i thought of the traditional steering method too, and was cerious. i know speedway motors uses cross steering.
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Old 08-23-2005, 10:09 PM
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From what I understand about bumpsteer, I didn't think it mattered what steering box was used. I am building a Tbucket and I have a reversed Corvair box. Nothing is mounted up yet so I am curious to the answer you get as well.
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Old 08-24-2005, 06:10 AM
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Frank is correct, bumpsteer has nothing to do with the gearbox. That comes from a mismatch of the A armrs and their center of rotation. I would go with the Vega box, just simply for availibility, there are more of those around than the Corvair. Parts are more plentiful also.

Vince
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Old 08-24-2005, 07:54 AM
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Bump Steer

I have a reversed Corvair in my bucket. If setup properly it will be fine. I have been told that the length and angle of the steering rods play a big part in eliminating bump steer. There are some articles on national t bucket alliance web site pertaining to this.

good luck with the bucket
they are a blast to drive and go real good with a fairly mild motor.
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Old 08-24-2005, 08:52 AM
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When running a solid axle mounted with one leaf spring you get bump steer do to the fact that the whole front axle can move from side to side due to the spring shackle movement. All you need to correct this is a front panhard bar.
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Old 08-25-2005, 03:38 AM
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From what I have seen, Henry is right on this one. With regular suspension (control arm type) the "Bump steer" comes from a change in "toe in or toe out" when the suspension travels up and down. This is because of the change on the distance between the wheels. With a straight axle, the distance will not change, as the axle is what is moving up and down. The "bump steer" is from the relationship of the axle to the steering box changing. This doesn't change the "toe", it changes the actual angle that the wheels are turned to. Like from straight to slightly turned one direction or the other. That will cause the vehicle to dart from one side to the other, as you try to keep it straight. Giving the axle a way to stay in one place, right to left, would correct that problem.
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