CMS help anything other then look?

[bsj03]

I have seen alot on scx10s but not many on wraiths. I just got my wraith kit in the mail yesterday and looking at parts to add.

I like the look of the chassis mounted servo but didn't know if it was really better performance wise just left on the axle?

So if I did buy one, would the one with the panhard bar be better to keep from shifting the a axle while steering. On those kits you have to remove one of the upper links to allow proper suspension cycling.

Bottom line is it just for looks or will it help do anything?

[XDR]

It's designed for the scaler appearance, so more life like.

[ScaleFreak93]

Not true, while it is life like the performance can be better in some situations plus it's just sweet! It also beefs up the front bumper because of the servo mount and gets the servo out of the way.

[rmiranda134]

The four links locate the front end. Pan hard bar will do nothing for the axle moving side to side. Y buddy bought all that and after looking at it the panhard does nothing. But I will say it looks like the real deal.

[winkscrawler]

Originally Posted by rmiranda134

The four links locate the front end. Pan hard bar will do nothing for the axle moving side to side. Y buddy bought all that and after looking at it the panhard does nothing. But I will say it looks like the real deal.

Wow. Misinformed you are. Next time state crap like that and put that it is your opinion cause it is in no way the facts.

[ScaleFreak93]

Originally Posted by rmiranda134

The four links locate the front end. Pan hard bar will do nothing for the axle moving side to side. Y buddy bought all that and after looking at it the panhard does nothing. But I will say it looks like the real deal.

This is all wrong man, have you ever even used a rig with cms? Because without it you may have bumpsteer problems plus most people get rid of one of the uper links so that combined with the panhard essentially 4 links it, just not the same lol but yea, it is necesary most of the time. But hey if its not needed then take it off of your 1:1 and then you will see why it's there

[Lukefalls]

I'm in for just looks. I build 1:1s and will tell you that with the longer travel and better articulation (scale or full size), panhard set-ups are more difficult to make work well. That is because the more the suspension cycles, the more the panhard rod changes in geometry, thus moving the axle side to side more. The panhard must match the drag link length and angle, or you get Bump Steer.

If you look at 1:1 long travel rigs, they all (well, mostly) have axle mounted steering. That is partly due to saving space under the motor, around frame, and above the axle. Mostly, its easier to engineer suspension that actually works without having to worry about steering/panhard geometry.

[sloppy]

Originally Posted by Lukefalls

I'm in for just looks. I build 1:1s and will tell you that with the longer travel and better articulation (scale or full size), panhard set-ups are more difficult to make work well. That is because the more the suspension cycles, the more the panhard rod changes in geometry, thus moving the axle side to side more. The panhard must match the drag link length and angle, or you get Bump Steer.

If you look at 1:1 long travel rigs, they all (well, mostly) have axle mounted steering. That is partly due to saving space under the motor, around frame, and above the axle. Mostly, its easier to engineer suspension that actually works without having to worry about steering/panhard geometry.

You know your totally right it is purely cosmetic.. But convincing some one that just spent some hard earned coin on a "must have mod" that did nothing for performance is a hard sell

[bsj03]

Thanks for the replys.

[rmiranda134]

Wow you dudes are harsh. All I was saying is I took my buddy's pan hard bar off the axle it self never really went side to side. Wasn't trying to bash the dude. Damn

[klabeaume]

Originally Posted by rmiranda134

Wow you dudes are harsh. All I was saying is I took my buddy's pan hard bar off the axle it self never really went side to side. Wasn't trying to bash the dude. Damn

If the axle was 3 linked like most cms kits, removing the pan hard bar would allow the axle to move side to side. If you took the panhard bar off and it didn't move, then it had to be 4 linked. Got any pictures? Maybe we can help more, but for the most part a cms kit if for scale coolness.

But like me, I need a 3 link to clear driveshafts, so it could be used for other things as well. All people will have different needs and applications.

[rmiranda134]

Yeah .my buds wraith is still a four link . The guy who started this post said thats what he wanted to know more about it on one. Figure i would say what I saw about it. But instead I got ppl jumping down my throat . It all depends on what you want and the look you want. I lime the scale look .

[Harley]

Originally Posted by rmiranda134

Yeah .my buds wraith is still a four link . The guy who started this post said thats what he wanted to know more about it on one. Figure i would say what I saw about it. But instead I got ppl jumping down my throat . It all depends on what you want and the look you want. I lime the scale look .

If you are running a panhard and four link then the truck is setup wrong. A panhard bar doesn't revolve around the same roll center a 4-link does. Therefore you are introducing bind into the suspension. It may not feel like it but it would be.

[rmiranda134]

Originally Posted by Harley

If you are running a panhard and four link then the truck is setup wrong. A panhard bar doesn't revolve around the same roll center a 4-link does. Therefore you are introducing bind into the suspension. It may not feel like it but it would be.

Thats why I told him to take it off

[Harley]

Originally Posted by rmiranda134

Thats why I told him to take it off

He should have left it on and went to a 3-link. That is the proper setup for a CMS.

[freakofnature]

here is what i found on the rpp web site about the vp cms * You can run the chassis mounted servo with out the pan hard kit. if you run this way you would keep your links stock with all 4 links still attached. *
If you run CMS and the panhard, it requres you remove one of the two upper links to make it a 3 link setup. If you run 4 links and the Panhard there will be binding in the suspension.
*A new drag link with traxxas ball ends or VP drag link is required to replace the stock drag link, The stock link ball ends do not rotate quite far enough.*

[rmiranda134]

Originally Posted by Harley

He should have left it on and went to a 3-link. That is the proper setup for a CMS.

Why is that the proper way to set it up? Vp says you can choose how you want it . 4 link or 3 link.

[ScaleFreak93]

It's a trial and error process if you are doing your own kit but thanks to vp and rc4wd etc. they did all that for us!

[klabeaume]

Originally Posted by rmiranda134

Why is that the proper way to set it up? Vp says you can choose how you want it . 4 link or 3 link.

This is what happens on most 4-link with a cms, not my video just one I found on youtube to show some of the issues you could face with a 4 link cms. Watch to see how much the chassis is pulled down due to binding.

testing first try at chassis mounted servo - YouTube

[Harley]

Originally Posted by rmiranda134

Why is that the proper way to set it up? Vp says you can choose how you want it . 4 link or 3 link.

You can choose but only one way is the proper way.

A four link cycles the suspension in a different motion then the drag link.