Thread: triangulated 4 bar

Tweet

Well here's my copy of your suspension Don, not as pretty but I'll clean it up once everything is mocked up (days of grinding to come ). Used some scrap metal I had and some new bushings from an Impala, $50 total. Tell me if you think it looks okay, but don't look too close!! I can jack the wheel up about 7" with no binding.

http://www.flickr.com/photos/12817213@N06/2219011051/

I can't figure out how to attach pictures like everyone else, my files are too big, I'll have to read that again.

Sean

Looks good so far!!! A bit more angle on the top bars then I like, but with the limited travel of a coilover it should work ok without binding.... What did you end up with for bar lengths??????

The uppers are 14" and the lowers are 21". Gonna try to mount the coilovers outside the frame, not sure if that will work with the body on it though.

Sean.

Bar length should be ok. As for the coilovers I like to have the bottom mount to be outside of a vertical line going down from the outside of the frame.... Even if this is only just an inch, then have them angled in at about 25 to 28 degrees. Some chassis builders specify 30 degrees, other say do not exceed 30 degrees. The larger the angle the smoother the ride....then the bad with the good is that as the angle increases the actual amount of vertical travel of the frame and the rest of the car decreases.... Along with a smoother ride, a larger angle "slows down" the reaction time of the shock....

Drag cars with unequal length 4 bars run the shocks vertical, or sometimes laid back 5 or so degrees. This is to lessen the amount of time it takes the chassis to transfer the torque forward on the lower bar and lift the front. On the street, this can be a real nightmare, and dang near get you seasick going over all the little bumps...

As to your 4 bars, as long as the suspension will move through it's entire range of travel without going into a bind situation everything should be fine. The setup I'm putting under the Camaro, a triangulated 4 bar, will consist of 18" uppers and 13.5" lowers and the angle of the top bars will be in a bit more then yours. I'm going to do some "playing" with this one and have built in a 5 degree up angle on my lowers, and an 8 degree down angle on my uppers... Then the real play toy will have the coilovers on the front side of the housing....... Might even have birdcages to mount the lower bars, and a pull bar on the top..... ???? Been a long winter and I get bored real easy!!!!!!