WANTED: 4-Link geometry Guide?

[The Jackalope]

Have a few very technical problems with tuning suspension designs. Does anyone have a link on how to tune out 4-link issues? I would like to learn more about suspension behavior.

The current issue is;
When climbing a wall, when it gets too steep. one of the front tires lift off and drop back, which is 'closer' to the rear wheels than when fully extended.

 

[9700trevor]

sounds to me like you have a lot of torque twist try adjusting the spring on the back tire opposite the on that comes off the ground. another thing to do is flip the skid plate around 180 degrees so the motor is on the opposite side did that with my rig and it solved alot

 

[wthomps]

http://mysite.verizon.net/triaged/files/4BarLinkV3.1d.zip


Even though this was made to work with 1:1 crawlers you should be able to make it work for an RC as well.

 

[dunebuggy79]

what kind of crawler you runnin?

 

[helhedded]

Try raising your REAR upper links a hole or two at the chassis and a little preload at the rear opposite side of whatever side is lifting up front.

If you posted a picture we could really help

 

[TOMCAT18T]

This is the thread that helped me figure it out...I still go back to it a couple times a year.
http://www.rccrawler.com/forum/general-crawlers/54791-anti-squat-suspension-tech.html

Its a bit of a read but it will help explain WHY and HOW link geometry works.







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[Grizzly4x4]

This is the thread that helped me figure it out...I still go back to it a couple times a year.
http://www.rccrawler.com/forum/general-crawlers/54791-anti-squat-suspension-tech.html

Its a bit of a read but it will help explain WHY and HOW link geometry works.







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I was just looking for that and came back to find you beat me to it. :ror:
That is a very good read.

 

[The Jackalope]

My rig is an MOA, so torque twist isn't really an issue. I've been researching the links you guys sent (Thanks btw) and I think I see a few places where I can adjust things better. Right now my upper links come down at a steep angle, and intersect with the lower links basically AT the mounting point. I'm going to try raising the rear-upper-link-mount on the chassis side.........alot!
I haven't even begun to understand the front link setup yet, but I don't think it's an issue at this point.

Left is front.