Quote:
Originally Posted by ccracin
Technically, that is not correct. With an independent set up like you have all torque loads essentially will be reacted by the center section. The knuckles in this case are just carriers and do not react any torque. If they do, you have a bad bearing. Therefore when under acceleration the wheels are pushing forward on the chassis. Consequently all 4 bars of the 4 bar are in compression with this design. This is unlike a solid rear axle with fixed bird cages and a 4 bar. As I said before, I can't say that you will definitely have a problem without much more info. If you have run this before and have success then you should be good. It never hurts to discuss these types of things. The chassis looks nice, I'm sure your customer will be pleased. Keep up the good work.  |
And I appreciate the conversation. So many people treat IRS suspension like a black box and never really discuss it. I was of the understanding that on the C3 / C4 corvette suspension and Jag type IRS suspensions that use a U Joint half shaft for the driving shaft AND one of the suspension links that a percentage of the torque reaction was pushed out to the knuckles?
And your right I got my link forces backward. I sat down to draw it out and realized my mistake. What can I say, I'm dyslexic and I still get my left and right backwards all the time. I'll leave my post unedited so I can receive my flogging.
I know right now I have a 71 corvette and a stock 88 corvette in my shop both getting work and I've driven both quite a bit in the last few days (buddies cars, they told me to
). The 71 with its single forward arm (and very short instant center) will squat if you look at it wrong. Stand on the brake and put it into gear and the back end will try to squat, any acceleration with traction will squat hard and the moment you break traction the back end tries to jump from the unloading spring. The 88 (and my past 57's) don't squat like that because of the dual forward arms. The instant centers moved up to the front of the car giving the load a longer lever against the car's suspension. Is that not torque reaction transmitting through the suspension to the tires?
Thanks again
-Russell