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Author Topic:   can someone explain how a 3link works?
6x
Dirt Roller

Total posts: 24
posted August 24, 2002 04:16 PM
we have a 3link car with both springs in front of rearend, lr275, rr225, long bar mounted to right side of axel, left side chassis. progressive spring pullbar at around 20 deg. seems like rearend sometimes will hit the underslung.can someone explain to me how this suspension works? when you get on the gas the rearend twists, causing the trailing arms that are attached to the bottom of the rear end to rotate towards the front of the car, in turn pushing up on the chassis lifting the car but also pushing down rear tires, correct? acually the rear tires are trying to go under the car.to stop the rearend from hitting the underslung we would have to go with stiffer springs in the rear, right?

dirttrackracer
Dirt Forum Racer

Total posts: 77
posted August 24, 2002 04:28 PM
Sounds to me that ride heights are too high,how much room do you have between axle tube and top or rear frame rail?Should be around three inches.Your rear springs are way too stiff for a three link,I run 200 l.r.,175 r.r.with both springs in front.

6x
Dirt Roller

Total posts: 24
posted August 25, 2002 12:07 AM
yes, that is where our ride heights are to, but this is a wissota car at 2600# after feature, 60% rear, don't get me wrong the car is very competitve and we will figure out the underslung, but I'm still wondering if anyone can explain how the 3 link with pull bar works? I have my theory just want to hear others,you know, (as the rearend pivots under accelleration yada, yada, yada

jammin
Dirt Administrator

Total posts: 5060
posted August 25, 2002 08:31 AM UIN: 16262997
I think if you do a search on the forum...most of the questions you are asking are already answered. Just use the search function and look for 3link or 3 link. Should be able to find anything you are looking for.

jammin

6x
Dirt Roller

Total posts: 24
posted August 25, 2002 10:52 PM
thanks a bunch jammin, never thought of that!!!!!!

Chad
Dirt Forum Racer

Total posts: 82
posted August 26, 2002 12:16 PM
If the underslung under the LR is hitting the axle, you may need to notch the frame, or install a drop down section. I did on my car and it made a big difference. A lot of cars are being built that way or with the LR underslung frame rail lower that the right. Check out most of the late models, they have the frame rail dropped down or with a large bend under the axle. An hours work notching and plating will pay off, and can't hurt anything.

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