scx chassis mount steering servo

[madazz]

hey everyone got a question in regards t setting up the steering on my scx10. im looking for some inspiration on mounting the servo to the frame and keeping good articulation and minimal bump steer. im looking to get it as good as possible if anyone can help that would be great and some pics would be even better.
cheers, Aaron

[salmonfacesalad]

you can make one or buy one. try this link RPP Hobby | Radio Controlled Cars, Trucks, Boats, Helis, Planes, Plastic Models

[Crawl Wonder]

You can also use the stock servo plate to chassis mount as well.

[madazz]

do i need to change the top y link to one single link?
do i need to have a panhard rod?
does the panhard need to be same side as servo or opposite side?

any other tips would be great, would definitely prefer to make something myself and understand how and why it works rather than just buy an off the shelf kit

[C*H*U*D]

Originally Posted by madazz

do i need to change the top y link to one single link?
do i need to have a panhard rod?
does the panhard need to be same side as servo or opposite side?

any other tips would be great, would definitely prefer to make something myself and understand how and why it works rather than just buy an off the shelf kit

It depends on how you set your steering up and how tall your truck is. My SCX runs the stock height with the stock three link in place. I run high steer knuckles which brings the tie-rod up to almost parallel with the drag link. I get a very slight amount of bump steer, but it's not noticeable at all while driving.

[madazz]

do you any pics or a link to your build thread so i can have a look? also how is your servo mounted to the frame?
my scx is stock height at the moment im still building the truck.

[C*H*U*D]

Here is a front view of my setup. When you start increasing the angle of the two rods, either with lift or a low riding tie rod, the effects of bump steer get worse, and you may want to go with a 3-link/panhard setup.



Here is a shot of my bumper/winch mount/steering servo/battery mount/electronics tray. I made this from one piece of sheet metal.

[Drail]

my truck is setup bout the same. my mt plate looks like this.

Drail

[Perkolator]

Originally Posted by C*H*U*D

Here is a shot of my bumper/winch mount/steering servo/battery mount/electronics tray. I made this from one piece of sheet metal.

^That is pretty sweet. I've been drawing my plans for the metal parts i'm planning to fab for my Honcho...I like the way your bumper is also integrated into that servo/electronics mounting plate. i might have to steal some parts of that design

i just re-configured my steering again after getting a Hitec 5645 from FrankieG; i use the stock servo plate with 2 new counter-sunk holes drilled in it. bolts through the shock mount hole and i can't remember if the front hole was there or not - it's a very simple fix. has a little bump steer but i don't notice it either.

[pixelnate]

Originally Posted by C*H*U*D

Here is a shot of my bumper/winch mount/steering servo/battery mount/electronics tray. I made this from one piece of sheet metal.

Dude, that is brilliant! I hope you don't mind, but I am definitely ripping off that idea. But it needs a panhard rod. Hmmm...

How much compression does your setup allow? Doesn't look like you'd get more that 5mm before the tie rod meets the drag link. Are you running a droop setup?


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[C*H*U*D]

Originally Posted by pixelnate

Dude, that is brilliant! I hope you don't mind, but I am definitely ripping off that idea. But it needs a panhard rod. Hmmm...

Not at all. If my truck was taller then maybe, but as it is right now there is just the slightest bit of bump steer. If this was a high speed rally car it might be an issue, but at SCX speeds you can't even notice it.

Originally Posted by pixelnate

How much compression does your setup allow? Doesn't look like you'd get more that 5mm before the tie rod meets the drag link. Are you running a droop setup?

I actually get the same amount that a stock SCX gets...both in compression and articulation. No droop setup either. What you can't see is the side shot. The link on the servo horn overlaps the tie rod so during compression the drag link actually goes to the front of the tie rod. The tie rod can compress all the way until it touches the servo arm.

edit: Here is a shot of what I'm talking about:



This truck is pretty heavy (for an SCX), and I like to run my suspension with a bit less preload than others...it sags about 1/3 of it's travel so that might be why it looks low. It still climbs great and can hold it's own against many lightweight lexan trucks. There have been changes since this video, but the steering setup is the same...it's the all white HiLux with the tube bed. 5:35 is my favorite part: