I am moving forward on my 32 project and need to build the radius rods and brackets. Is there any length that is better than others? I have looked a t a lot of 4 bars, split bones and hairpins and the lengths are across the board. I have some recollection of radius rod mounting points needing to be the same as the pitman arm to avoid bump steer. Does this really matter. or does it not make too much difference? Also, has anyone made RR brackets that not the typical speedway, or single hump bracket? It would be nice to make something that complimented the frame and had an art deco style to it, but I have not been able to come up with a design that I am happy with.
EEERRRRRR NO! Radius rods are fabricated tubing parts that can be used either front or rear. Wishbone is a slang term for Early Ford components that can be once again, either front or rear.
Just found the thread. Wow nice work, and a local boy to boot. http://www.jalopyjournal.com/forum/showthread.php?t=616418
Cool, that's good to know. There are really a couple of different ways to look at wishbone/radius rod geometry as it pertains to steering. In the case of a stock box with the steering arm pointing down, the line that the radius rod or wishbone makes from the axle to the mounting point, should intersect with the line that the drag link makes from the steering arm on the box to the one on the spindle. As long as this intersection is somewhat close, you should be fine. I read that back and it's kind of confusing sounding, but basically the drag link and radius rod form a shallow triangle when veiwed from the side of the car. This keeps the arc of the axles movemnet and the arc of the draglink relative to each other. If you can't visualize it, I can dig around a bit and come up with an ancient Pete & Jakes catalog that has the whole deal illustrated. The other method would be if you were mounting the box high (like a cowl steering set up) or with the steering arm pointed up like and early VW bus or Mustang unit. Then your looking for the wishbone or radius rod to be on the same plain as the drag link. Almost like a four link suspension system. This is allot harder to pull off and make work, and fortunately with the box you've chosen, you don't have to worry about it. And, if you have never been to Industrial Chassis and you live here in town, you have no idea what you are missing! If your down in this neck of the woods sometime soon, give me a call and I'll introduce you around. Heck, check out my little joint down here too! Steve, aka Elpollacko, is honestly the best of the best as far as chassis set up and artful componentry.
The triangle makes perfect sense. I'd like to get down to both places, I am a bit tied up with a big job at the moment, but will hopefully get caught up ina few weeks. Where is your places at?
I'm right off central between McDowell and Thomas, and Steve is about 3 mi from my place. My place is seriously underwelming as a shop, but I've got cool stuff, Steve's place is increadible.