Power Rack and Pinion
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Power Rack and Pinion
Has anyone replaced the steering in their bumpside with a power rack and pinion set up? I kind of want to keep the twin I-beam set up, but want to ditch the old steering for a modern set up. any thoughts or ideas on where to start?
- HIO Silver
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Re: Power Rack and Pinion
This has been asked before and it can be done BUT the bumpsteer will be enormous and downright dangerous and likely deadly.
Rack n pinion on an ifs works because the tie rod and control arm swings in the same arc due to the pivot being at nearly the same point. Now apply the same principle to a rack combined with I-beams... the beam's pivot is on the opposite side of the frame. Cycle the suspension and the tie rod will swing in a tighter arc effectively shortening its length and 'steer' outwards. Pow! ...bumpsteer that cannot be eliminated without significant re-engineering.
Rack n pinion on an ifs works because the tie rod and control arm swings in the same arc due to the pivot being at nearly the same point. Now apply the same principle to a rack combined with I-beams... the beam's pivot is on the opposite side of the frame. Cycle the suspension and the tie rod will swing in a tighter arc effectively shortening its length and 'steer' outwards. Pow! ...bumpsteer that cannot be eliminated without significant re-engineering.
Last edited by HIO Silver on Mon Mar 31, 2014 8:03 pm, edited 1 time in total.
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71 F250 LB, 2WD, 360FE, T18, PS, PB, D60 with 4.11s
73 F100 SB 4WD, 390FE, NP435, +4 on 35s
01 Ferrari 360 Spider F1
01 F150 SuperCrew Lariat 4WD
01 PT Cruiser Limited (DD)
68 Mustang
65 Mustang
- flyboy2610
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Re: Power Rack and Pinion
If you really want R&P steering, put in an IFS front end from a Crown Victoria. Lots of threads on here by people who have done it. Here's a good one: http://www.fordification.com/forum/view ... hp?t=47610tyn2danet wrote:Has anyone replaced the steering in their bumpside with a power rack and pinion set up? I kind of want to keep the twin I-beam set up, but want to ditch the old steering for a modern set up. any thoughts or ideas on where to start?
As HIO mentioned, you can put R&P steering on a twin I beam suspension, but you'll probably live much longer if you don't.

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Red Green
If you're going to live like there's no hell...............
you'd better be right.
http://theworldasiseeit-flyboy2610.blog ... ee-it.html