Side Flex

[NitroX]

Is there a good way to minimize side flex on a 4 link, (Rockbull) chassis? Please, no chassis review comments here...

[Harvo]

What do you mean by side flex?

Are the chassis plates flexing?

If so... put in some cross braces between the plates. If you don't have any, get a plastic coat hanger and cut several out the length you need, then drill into the ends and put them in with some little screws.

If that isn't what you mean... you'll need to explain.

[NitroX]

hmmm, How to explain what I mean... Lets see..... When the truck is sitting on the ground, on its wheels, I can move the chassis from left to right and visa versa if ya know what I mean... I know you want some movement but Im thinking theres too much in this case. Its like the ball ends are allowing for to much range of motion at the balls themselvs. Make any sense? lol...

[1rcmonster]

Are your links triangulated ? If not you will have alot of side to side movement...

You do not need to triangulate both the top and bottom links. On my crawlers and clod bashers I usually triangulate the top links with the point of the triangle on top of the axle.

[NitroX]

"Are your links triangulated ?"

umm, Care to elaborate on that? Is that like the Pythagorean theorem of rock crawling? lol

[hitman46mod]

These are triangulated upper and lower links. You can do just the bottoms or the tops but both will almost eliminate axle steer.



I may just be reading to much into your posts, but you may want to try to be less sarcastic when asking for help.

[NitroX]

Dude, I was just joking, take a pill, its Christmas. If I were being sarcastic, there would be no question about it.

[hitman46mod]

Originally Posted by NitroX

Dude, I was just joking, take a pill, its Christmas.

Like I said, I may have been reading too much into your post. Put up a pic of your links. You need at least 14 degrees at the top or bottom to stop any lateral movement.

[1rcmonster]

Here are a few pics of triangulation on a couple of clods. If you notice I only triangulate the upper links and I always mount my shocks to the lower links, that also takes away the side to side movement...




Hope these pics help....

[NitroX]

Here ya go...



Crap, forgot to resize.... Sorry.

[1rcmonster]

your upper links are too far in on the chassis...
if you compare my uppers to yours you can see that yours are almost running parallel to one another....
that is where are your side to side movement is coming from...

[NitroX]

So I should remove the spacers and mount them directly against the chassis plate? Thanks!

[Harvo]

Yes... or even on the outside of the chassis plate.

[1rcmonster]

Remove the spacers from the chassis and if you can from the mount on your gearbox. You may have to change the rod ends at the gearbox so it does not bind if you remove the spacers there...

[CPE MT]

The washers used on the axle mount are fine, but remove the spacers where your upper links mount to the chassis. Mount the washers/links directly against the inside of the chassis.

You should be fine after that, unless there's a bunch of slop in the aluminum ends themselves.

[Reflection]

Originally Posted by 1rcmonster

Here are a few pics of triangulation on a couple of clods. If you notice I only triangulate the upper links and I always mount my shocks to the lower links, that also takes away the side to side movement...

Shocks mounted on the links DO NOT take away lateral movement.


Double triangulated IMO is the best set up. That along with more triangulation will give you more lateral strength and you will loose most,if not all side to side movement.

Put the lowers on the inside of your chassis and move the uppers to the outside. Lowers on the inside of the plates will also be less to hang up on,skinnier drag path so to speak.