Another CMS / Panhard question

[SynisteR6]

Hey gang... first off thanks for all the great advice and information I get here...

I have the RC4WD CMS kit on my wraith the the panhard kit and I'm noticing two things that I'm curious if they are normal or if they can be adjusted out.

a) is it common to have more steering to one side over the other with the panhard kit?

b) does this kit make the ride height of the front of the truck sit lop sided?

Thanks in advance for the thoughts and input.

[allanon1965]

pics of the setup would help immensely

[SynisteR6]

Good point...

[maslin]

Try to get the drag link and panhard in line a little better.

You should be able to turn until the tires hit the shocks, both directions.

[maslin]

Aftermarket knuckles with a higher steering arm would help the angle. A stronger servo will help immensely.

People like to say a CMS steers as well as an axle mounted servo. That has never been my experience.

[SynisteR6]

Originally Posted by maslin

Aftermarket knuckles with a higher steering arm would help the angle. A stronger servo will help immensely.

People like to say a CMS steers as well as an axle mounted servo. That has never been my experience.

Those are older (cleaner) pictures, I actually now run a savox 1231TG. Honestly I just did it for the looks. I don't have enough experience nor do I compete to say if there is a performance difference.

[gottorque]

OP should flip his link/shock mounts over on his axle to lower the ride hight a small amount. But the both the panhard and drag are pretty close to parallel...a straight rod end on the axle side of the drag link instead of a bent one should bring it back in line.

In my experience, the more severe the angles of the drag link an panhard bar, the less effective steering input from the servo becomes on actually turning the tires. Also with steep angles, the panhard bar path will tend to travel in a more drastic arc. It is the same reason people switch to long arms on a jeep after a certain amount of lift...the short arms simply become ineffective and are not only at a steep angle at rest, they must travel large distances as the suspension cycles. The long arm puts the link in a more natural position and the link does not have to travel as far for the given amount of travel.

Here is my Wraith...it is 1.9 swapped but the concept is the same. Notice how my panhard and drag link only have a small amount of inclination to them as they rise to meet the chassis and servo. The more relaxed angle is able to steer the wheels efficiently and the axle does not have the tendancy to have large side to side shifts as the suspension cycles...which can be cause for bump steer and less than ideal steering efficiency. I also have full lock to lock steering.

Hope that helps

[Dennis76]

[QUOTE=SynisteR6;5420312]Good point...






I noticed in this photo that he has a left upper link only. Mine has only the right side upper link (it came to me like that).

Does which link you take off have any impact?

Didn't mean to jump your thread, just seeking clarification!

[351Beno]

The link should be on the same side as the Panhard frame mount.

[SynisteR6]

Originally Posted by 351Beno

The link should be on the same side as the Panhard frame mount.

There were no instructions with the CMS kit, is it correct? I was under the impression it doesn't matter as all it does is triangulate to keep the pumpkin in check.

[351Beno]

The panhard does the centering so a straight upper link is better. But on an rc you can use the stock upper mounts.

[SynisteR6]

Originally Posted by 351Beno

The panhard does the centering so a straight upper link is better. But on an rc you can use the stock upper mounts.

So does the one above look correct? (left vs right)

[allanon1965]

My link is opposite of the frame mount and my set up works perfectly...

[maslin]

The upper link just maintains the pinion angle. Doesn't matter where it as, as long as it doesn't bind.

[altd896]

Originally Posted by SynisteR6

So does the one above look correct? (left vs right)

Its the way RC4WD show it in their pics so chances are it's how they designed it.


Their pic seems to show a bend drag link that you don't have, don't know if that makes any difference.
You can get more steering throw using a longer servo arm but you will loose a little steering leverage/power out of it.

[SynisteR6]

Originally Posted by altd896

Its the way RC4WD show it in their pics so chances are it's how they designed it.


Their pic seems to show a bend drag link that you don't have, don't know if that makes any difference.
You can get more steering throw using a longer servo arm but you will loose a little steering leverage/power out of it.

the kit came with the bent link and the straight one, performance wise I don't see that they differ...

[altd896]

Originally Posted by SynisteR6

the kit came with the bent link and the straight one, performance wise I don't see that they differ...

No, I couldn't see it could make any difference either, was clutching at a straw for you that maybe it would.

[CraigH]

I didn't read all the post so maybe this is a repeat. It would seam to me that with such a sharp angle on the steering arm, it would start to move vertically, rather than horizontally due to less resistance, at the end of the servo sweep - when turn right. It would likely have less of an effect turning left as its pulling rather than pushing.

As others have mentioned, try raising the mounting point at the knuckle or dropping your servo a little bit if you can afford at little loss in clearance.

[allanon1965]

first thing I would do is make sure the the servo is not hitting the end of its throw when turning right, take off the steering link and check the range of the servo arm left to right, see if it will go further right when its unhooked from the linkage...also would second the motion for a longer servo arm..yours is too short

[o0wiz0o]

In my mind the longer bent link will be for a Stock Wraith that sits tall. The straight will be for those who lower it.