Triangulated four link question - Moparts Forums

Register Log In Moparts Forums Corners Are Best - Handling Tech Triangulated four link question

Print Thread

Triangulated four link question #1345801 12/04/12 11:53 AM 12/04/12 11:53 AM
Joined: Nov 2003 Posts: 3,439 Dandridge TN D Dabee OP master
Dabee OP master D Joined: Nov 2003 Posts: 3,439 Dandridge TN	I have a triangulated four link question for you guys. I�m installing a triangulated four link on a 55 Dodge PU street rod. I know on a parallel drag race style four link the bottom bar needs to be parallel with the ground and the top bar is angled down to set the instant center. This is done to get the car to hook. On a triangulated setup for the street can the bottom bar be installed angled up and the top bar parallel to the bottom bar and will this negatively affect the handling?

Re: Triangulated four link question [Re: Dabee] #1345802 12/04/12 01:52 PM 12/04/12 01:52 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	handling and triangulated four link. Interesting juxtaposition. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Triangulated four link question [Re: Supercuda] #1345803 12/04/12 02:00 PM 12/04/12 02:00 PM
Joined: Jan 2003 Posts: 104,346 Garden Grove, CA OzHemi Penguin-hating Ginger
OzHemi Penguin-hating Ginger Joined: Jan 2003 Posts: 104,346 Garden Grove, CA	Quote: handling and triangulated four link. Interesting juxtaposition. Sure works well for cars like mine. Holden Torana's dominated racing in Australia, and uses a triangulated 4 link factory... 7488799-bathursta9x.jpg (145 downloads)

Re: Triangulated four link question [Re: OzHemi] #1345804 12/04/12 03:49 PM 12/04/12 03:49 PM
Joined: Jan 2003 Posts: 28,068 Irving, TX feets Senior Management
feets Senior Management Joined: Jan 2003 Posts: 28,068 Irving, TX	Millions of GM cars were built with a triangulated four link suspension. We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon

Re: Triangulated four link question [Re: feets] #1345805 12/04/12 07:34 PM 12/04/12 07:34 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: Millions of GM cars were built with a triangulated four link suspension. The go buy one. Just cause millions of wiggly butt GM's have it doesn't mean it's a good thing. In order to get a triangulated fourlink to handle you have to use a lateral locating device, making in somerthing other than a four link. So OZ, your Torana running a panhard or watts? Bet it is. Last edited by Supercuda; 12/04/12 07:35 PM. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Triangulated four link question [Re: Supercuda] #1345806 12/04/12 07:48 PM 12/04/12 07:48 PM
Joined: Jan 2003 Posts: 104,346 Garden Grove, CA OzHemi Penguin-hating Ginger
OzHemi Penguin-hating Ginger Joined: Jan 2003 Posts: 104,346 Garden Grove, CA	Quote: So OZ, your Torana running a panhard or watts? Bet it is. That is a bet you would not win then... And plenty of them being raced without them too.

Re: Triangulated four link question [Re: Supercuda] #1345807 12/04/12 07:55 PM 12/04/12 07:55 PM
Joined: Jan 2003 Posts: 104,346 Garden Grove, CA OzHemi Penguin-hating Ginger
OzHemi Penguin-hating Ginger Joined: Jan 2003 Posts: 104,346 Garden Grove, CA	And...running a panhard with a triangulated 4 link induces binding anyways from what I believe. Since the panhard moves in an arc differently from the one moving by the differential itself. A 3 link with watts link would probably be a better way to go from what I have read now and then..

Re: Triangulated four link question [Re: OzHemi] #1345808 12/04/12 08:05 PM 12/04/12 08:05 PM
Joined: May 2003 Posts: 96,664 On The Boat, On The Lake, Wa. ... amxautox Still Retired. Still Posting on Moparts. A Lot.
amxautox Still Retired. Still Posting on Moparts. A Lot. Joined: May 2003 Posts: 96,664 On The Boat, On The Lake, Wa. ...	Trianglated means the uppers, or maybe lowers if those are the ones that are at an angle, keep the rearend centered, no need for a panhard bar or Watts linkage. Straight bars would probably need a panhard bar or Watts link, depends on how good the installation is, and how hard/soft rubber/metal the bushings are. Along with the shock mount and spring mount, etc. Tom "Everyone should believe in something; I believe I'll go fishing." -Henry David Thoreau Men and fish are alike. They both get into trouble when they open their mouths author unknown

Re: Triangulated four link question [Re: amxautox] #1345809 12/04/12 08:14 PM 12/04/12 08:14 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: Trianglated means the uppers, or maybe lowers if those are the ones that are at an angle, keep the rearend centered, no need for a panhard bar or Watts linkage. That's the theory, in reality I have yet to drive a production triangulated four link that wasn't wiggly in the rear. The only reason the triangulated four link was developed was to provide a cheap, soft ride. Adapting it to any performance aspect requires a lot of stock parts replacements and redesign. Something not necessarily needed with the Chrysler based leaf setup. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Triangulated four link question [Re: Supercuda] #1345810 12/04/12 08:29 PM 12/04/12 08:29 PM
Joined: May 2003 Posts: 96,664 On The Boat, On The Lake, Wa. ... amxautox Still Retired. Still Posting on Moparts. A Lot.
amxautox Still Retired. Still Posting on Moparts. A Lot. Joined: May 2003 Posts: 96,664 On The Boat, On The Lake, Wa. ...	They wiggle because they have soft rubber bushings for comfort off the showroom floor/dealer lot. Not to mention the weak U shaped bars that really can't support much side load. THATS why the bars need to be replaced with solid/hollow bars, and use heim/saphirical ends for the best results/adjustability/handling. Tom "Everyone should believe in something; I believe I'll go fishing." -Henry David Thoreau Men and fish are alike. They both get into trouble when they open their mouths author unknown

Re: Triangulated four link question [Re: amxautox] #1345811 12/04/12 10:08 PM 12/04/12 10:08 PM
Joined: Apr 2006 Posts: 46 Ohio B blown71duster member
blown71duster member B Joined: Apr 2006 Posts: 46 Ohio	Art morrison recommends the lower bar level or slightly down. http://www.artmorrison.com/instructions/tri4-bar1-Model.pdf They use this setup in their max-g chassis. I also heard good feedback on the RMS and its a triangulated 4 bar. http://www.artmorrison.com/2006cat/31.pdf

Re: Triangulated four link question [Re: blown71duster] #1345812 12/04/12 11:15 PM 12/04/12 11:15 PM
Joined: Dec 2009 Posts: 339 Gilroy,CA. mopardude318 enthusiast
mopardude318 enthusiast Joined: Dec 2009 Posts: 339 Gilroy,CA.	RMS Street Linx here. 408 Stroker 533 HP 520 FT LBS...........................1970 Dart RMS AlterKation

Re: Triangulated four link question [Re: blown71duster] #1345813 12/05/12 02:10 AM 12/05/12 02:10 AM
Joined: Nov 2003 Posts: 3,439 Dandridge TN D Dabee OP master
Dabee OP master D Joined: Nov 2003 Posts: 3,439 Dandridge TN	Blowen 71 duster, Thanks for the links. They answered my question. I currently have the top bars tacked in about 2 degrees up. I�ll move the brackets down to get 1 degree down before I weld them in place. I was thinking they should be parallel. The bottom bars are level. For supercuda, lots of street rods use triangulated four links with great success. This is not a production GM set up so you are comparing apples to oranges here. The aftermarket set ups have stiff bushings in the links. Ozhemi is correct a triangulated four link doesn�t use a pan hard bar or diagonal link to keep the axle centered like on a parallel four link. This is a street cruiser not a drag set up.

Re: Triangulated four link question [Re: Dabee] #1345814 12/05/12 05:15 AM 12/05/12 05:15 AM
Joined: Jun 2005 Posts: 793 Utah topbrent super stock
topbrent super stock Joined: Jun 2005 Posts: 793 Utah	Here is a good read on the fabrication/installation of a triangulated 4 link setup on a 67 Dart. Same basic design as the Reilly Street-Lynx setup, just beefier DIY. http://www.forabodiesonly.com/mopar/showthread.php?t=101437&highlight=triangulated

Re: Triangulated four link question [Re: amxautox] #1345815 12/05/12 08:30 PM 12/05/12 08:30 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: They wiggle because they have soft rubber bushings for comfort off the showroom floor/dealer lot. Not to mention the weak U shaped bars that really can't support much side load. THATS why the bars need to be replaced with solid/hollow bars, and use heim/saphirical ends for the best results/adjustability/handling. I know all that and have gone through most of it with the 96 Stang I had. Still had a wiggly butt compared to my Cuda or Dart. I have yet to be impressed with any production triangulated 4 link, an Oz that Torana of yours looks to be a corporate GM setup so I imagine I wouldn't be impressed there either. Once you get into heim joints and spherical bearings to make it work you have less a street car but more of a race car. If that's what you want fine, but it's not my bag of goodies. If I were going to put all this effort into a rear suspension I would skip over any four link and go independent I do not think the "benefits' of a triangulated four link even match the costs involved, let alone exceed them. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer, tommoparts

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1