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Ford's original spring perch design, in the early 60's, utilized free rotating brass bushings. Ford changed to rubber to cut costs and reduce regular greasing and maintenance. At the time the rubber seemed like a very economic solution. It is also quite common for the best performance parts for both the daily driver and the circle track champion to be designed in the aftermarket sector rather than by the original manufacturer. Improve the handling of your classic Ford with ORP's Roller Spring Perches. Stock perches use rubber as the bushing between the perch and the perch-mounting shaft which greatly increases the effort required for your suspension to move. ORP's roller spring perches use roller bearings to greatly reduce this resistance which improves ride quality, responsiveness to the road, and improved handling. The roller spring perch improves handling by allowing the base of the spring to remain level compared to the top of the spring throughout the articulation of the suspension. The stock perch does not articulate enough and so when you go over a bump, it essentially stays in the same orientation regardless of the angle of the upper arm. This means that the outside of the spring becomes much shorter than the inside when the upper arm moves up and down. This leads to variable spring rate (and not in a good, predictable way). The spring wants to become "c" or backwards "c"-shaped and causes the shock to bind (shocks work best up and down, without any sideways force on them), wearing it out prematurely, too. Popular with the street crowd, road racers and drag racers. Upon installing, the is a noticeable smoothing of the imperfections in the road surface such as dips, pavement seams, and patches. Open track/race car owners report that the cars will hold a line better at high speed and through the turns. The drag racers report that the cars will "hook-up" much better than before, the 60ft times have improved, also that the cars are more stable at high speeds and under heavy braking. Opentracker roller perches have also been featured in FordMuscle magazine. Click here for ORP's new roller lower control arms, upper control arms and rollerized idler arms What classic cars do your roller spring perches fit?
Click on part numbers for pictures.
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