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Old 05-10-2002, 08:24 PM
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Post Triangleated four link suspension

I just had a four link rear suspension installed by a shop that has been installing lowering kits and airbags for years. Two of the links go from the bottom of the axle forward The other two go from the top of the axle to the rear of the car. Is there any chance this could work?

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Old 05-10-2002, 11:49 PM
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These types of suspension setups are best for low riders. They twist the axle in it's travel and unless you restrict the axle movement to just a few inches you can run into u-joint problems.
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Old 05-11-2002, 02:48 AM
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Yep it will work just fine.(if done corectly) Most cars/trucks dont lend them selves to doing it that way... but if the lower links and the upper links are the same length and are both level at ride height its nothing but a watts link side ways..It really is a good set up in some bigger cars. It would not work in say a 32 duece as there is no back to the car. But something like a big buick wild cat with a long tail it works just fine. its kinda weird looking to most guys but the geomtry does not know any diff. Now if the rear links are shorter than the lowers it will change the pinion angles some.but not much diff than a triangle GM 4 link. It will also not work all that well if the links are not level. We played with this design a lot on racecars but it really did not work as we were getting hit in the rear all the time and messing up the geomtry. Its just another way of doing it and done correctly is not a problem.
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Old 05-12-2002, 02:07 PM
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phat
You seem to be the man! Wouldn't the 4 link system work better if all 4 links went forward from the axle? One of the rear facing links is hitting the edge of the gas tank so I have to change it any way. Also the shocks are closer to horizontal than vertical, plus the air bag suspension at its lowest is about the same height as it was with lowering blocks. That means changing the mounting points.
Thanks,
toonast

[ May 12, 2002: Message edited by: toonast ]</p>
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Old 05-13-2002, 09:38 AM
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With all that info it does sound like you have some screw ups. The shocks should not be on more than a 15 degree angle..sometimes you have no choice but i dont like to go much more than that. Also the lower shock mount should be as close to the wheel(with out rubbing) and about 6 inches down from the centerline of the rear(i have gone 8 if it does not go below the scrub line)The links dont really care which way they are mounted ..but if its hitting the gas tank its a no no.That is usally the problem with doing it that way.either the frame is to weak back there or the ex,trunk floor or gas tank get in the way. On the air ride deal it all depends on the car and bags. I like to set the car with no bags or springs or shocks up for the customer to look at ..now i tell them thats as low as it can go(not driving low..parked low) Now i figure out how to mount the bags so the geometry is correct for the car at ride height.Some low riders are simply not worth the steel they are built from..If you cant drive it at 90 mph safely than in my book its just lawn furniture. So i guess what i am saying there is a trade off to have a decent ride..safety..and a low car. I can all be done but it invoiles way more than most guys will pay.They just want the frame on the ground like the undriven magz cars.
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Old 05-14-2002, 09:03 PM
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The installer says the links must run front and rear or I can't get any up and down movement, with out pushing the axle sideways, way sideways.
What is the purpose of the inner mounted links?
He says a panhard bar is worse and just not any good for a street application at all. The air bags are mounted under the frame and a couple of inches above the axle, so it is not any lower than when I started. It will go higher,but I want to go down not up.If the rear bars are moved forward the air bags could bemoved behind and to the bottom of the axle and that seems like it would help. every picture i've seen show the bars going the same way.
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Old 05-21-2002, 08:59 AM
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Cool

hey hey phat i'm here coolamundo
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Old 05-21-2002, 09:40 AM
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Hey Bullfoot cool man!!!!! How are you doin buddy???
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Old 05-21-2002, 10:43 AM
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Phat, Bullfoot I'M here too. Good to see ya on this site!
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Old 05-23-2002, 02:06 PM
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Hey Brother I am here too!!!

Alan
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