Triangulated 4-Bar or 4-bar with watts-linkage?

[CamaroGbg]

I have looked into the Lateral Dynamics setup and it looks
awesome
Abit expensive though. I have to look into this a bit
more before i make up my mind. The car will meet both
street and road race course.

[Steve Chryssos]

The direct answer to your question is a parallel four link with a panhard bar.

Here's an example:

http://www.detroitspeed.com/QUADRALink10.html

[Steve1968LS2]

Originally Posted by streetfytr68

The direct answer to your question is a parallel four link with a panhard bar.

Here's an example:

http://www.detroitspeed.com/QUADRALink10.html

Maybe you could explain the advantage of a PHR over the triangulated upper links?

Also, why would a PHR be more advantageous than a Watt's link?

Knowledge is power

[Kendall Burleson]

win the 4-link set up in the giving away and you are money ahead.

[Musclerodz]

Originally Posted by Steve1969LS1

Maybe you could explain the advantage of a PHR over the triangulated upper links?

Also, why would a PHR be more advantageous than a Watt's link?

Knowledge is power

Triangulated upper links are a version of the satchell link rear. The angled links should preferably be below the rear for several reasons. One, with the angled links on top, they are usually very short and will bind with very little movement. if they are on bottom they are much longer and less likely to bind. You can cure some of the bind with the use of Jonny Joints. the second reason I have been told is with the angled links on bottom, it lowers roll center height but not sure why. Dennis or Marcus can answer that.

Panhard Bars are better for packaging around exhaust systems. Watt's links are better centering devices for the rear in that they don't allow the rear to move side to side at all. Panhards with enough travel move in a an arc which is side movement. Disadvantage of Watt's is getting the exhaust out the rear effectively. Hope this helps and if I am wrong on anything please correct me. I am a young grass hopper still in training.

Mike

[Steve1968LS2]

Originally Posted by Musclerodz

Triangulated upper links are a version of the satchell link rear. The angled links should preferably be below the rear for several reasons. One, with the angled links on top, they are usually very short and will bind with very little movement. if they are on bottom they are much longer and less likely to bind. You can cure some of the bind with the use of Jonny Joints. the second reason I have been told is with the angled links on bottom, it lowers roll center height but not sure why. Dennis or Marcus can answer that.

Panhard Bars are better for packaging around exhaust systems. Watt's links are better centering devices for the rear in that they don't allow the rear to move side to side at all. Panhards with enough travel move in a an arc which is side movement. Disadvantage of Watt's is getting the exhaust out the rear effectively. Hope this helps and if I am wrong on anything please correct me. I am a young grass hopper still in training.

Mike

You and me both.. I learn something everytime I discuss this.

So if the angled bars were moved to the bottom then what would control the rotation of the differential?? (pinion angle)

[sinned]

Ok, I had a long old response typed up it was “lost”. Here is the abridged version. Converging the lower links is known as a Satchell link and is totally different than C4L the Chevelle and Mustang use. The Satchell link has a much lower RRCH due to the converging link that define the roll center being located below the axle rather that above it.

The only advantage to using a PHB over a Watts link is packaging. A frame mounted Watts link allows RRCH to remain constant through range of motion and has a lower unsprung weight.

Steve, the Satchell link controls pinion movement the same way a C4L does; through use of the the parellel links and somewhat through the angled links.

[Steve1968LS2]

Originally Posted by dennis68

Steve, the Satchell link controls pinion movement the same way a C4L does; through use of the the parellel links and somewhat through the angled links.

Gotcha, thought he meant move the triangulated upper links to the bottom.. lol.. that had me perplexed