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01-04-2012, 10:04 PM | #1 |
Pebble Pounder Join Date: Apr 2011 Location: scranton
Posts: 153
| scx10 Chassis Mounted Servo CMS mod detailed write up Hoping a mod can make this a sticky Hello well i was tinkering the other day after seeing they want about 50$! for a CMS kit and came up with this and figured id do a write up for you fellow scx10 guys and gals. All in all it should cost about 1$ and 10mins of your time. Tools needed: File Drill press/drill 1/8 inch bit Hex drivers/allen keys Pliers/nut driver Items need(see step 11 for a picture) Stock steering parts 2 lock nuts 2 bolts 2 screws 1-So here we have a picture of your stock steering setup. 2-Remove your steering servo and servo mounting plate . 3-Unbolt your shocks,its also nice to put something under your skid to support it makes things easier.(just so happens i have a scale jack ) 4-Next remove your shock towers and set them aside. 5-Then remove your front cross member . You can normally pry the frame rails enough to get it out but if not you may have to remove your front bumper. 6-Now your chassis should look something like this. If you have the other cross member you will also have to remove it i removed mine a wile ago. 7-Next take your cross member and drill through the front driver side with a 1/8 inch bit so a bolt can slide through. 8-Well with your front cross member out take a file and file the in side as shown from were the brace that runs at an angle to the front you want this about 1/8 of an inch or until it sits flush when in the frame rails as shown. 9-Next take your driver side shock tower and file it as shown this is the side towards the front end. 10-You may now bolt your shock towers back on but don't put the front bolts in. You can also bolt your shocks on. 11-Now its time to pull out the stock steering stuff. The black screws(top left)will be replaced with the gold ones(center)you just need a screw with a smaller head to clear the frame rails. You will also need 2 bolts similar to the stainless ones(top right) they must have the tapered head and be about 1/2 inch long. You will also need 2 lock nuts to go with the stainless bolts. 12-Next take the servo plate ,servo mounts,and new screws and put them together note leave the one screw some what loose 13-Now take your servo plate and tapered bolts(stainless ones i had in step 11) put the bolts through the servo plate and through your frame rail and tighten them down with the lock nuts. 14-Now you can tighten the other screw on the servo mount through the shock hoop. Also you can put the other screw in on the front passenger side shock mount (i left this out because i used a Allen key through this hole to tighten the other side to speed things up) 15-Bolt your servo up put some steering links on and enjoy your CMS for dam near free!!!!! let me know what you think or if you have any problems |
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01-04-2012, 11:59 PM | #2 |
Rock Stacker Join Date: Jan 2011 Location: Oak View,Southern California, Ventura County~805~
Posts: 72
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
love it! great work and awesome detail thank you! |
01-05-2012, 01:18 AM | #3 |
RCC Addict Join Date: Oct 2011 Location: Brighton UK
Posts: 1,363
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
Nice job, does the steering link arm need to be altered in length? Also what is the benefit of doing this, is it purely to create a more scale look or does it perform better? Cheers Bill |
01-05-2012, 05:45 AM | #4 |
Rock Crawler Join Date: May 2009 Location: Queensland, Australia
Posts: 610
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
Nice write up....Super easy to understand! Bill: You will most likely need a custom length drag link it all depends on the rig and suspension set up. CMS itself pretty much for looks, it performs no better than axle mounted steering....It can actually be worse, because it moves the servo up higher, and without a panhard bar you will have bump-steer when the axle articulates. |
01-05-2012, 09:37 AM | #5 |
Pebble Pounder Join Date: Apr 2011 Location: scranton
Posts: 153
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up Thanks guys ,and yes bill you will most likely need a custom length drag link and the cms is for a more scale look helps with flex some on these since the servo use to hit the frame and gets that servo up higher away from water. |
01-05-2012, 10:55 AM | #6 |
Rock Crawler Join Date: Jul 2011 Location: Placer County
Posts: 843
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
good job that's exactly how i did mine. why pay for a kit when the parts are already on the rig?
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01-05-2012, 11:02 AM | #7 |
RCC Addict Join Date: May 2010 Location: Midwest
Posts: 1,917
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
Hellz yeah!
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01-05-2012, 02:50 PM | #8 |
I wanna be Dave Join Date: Jul 2009 Location: Rancho Relaxo. California. USA. Earth.
Posts: 3,292
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
How's the bump steer?
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01-05-2012, 07:19 PM | #9 |
Pebble Pounder Join Date: Feb 2008 Location: 808
Posts: 136
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
Great info, spent the weekend trying to figure out a cms. Drove me nuts so my friend brazed sum tabs up with a panhard. I'll be taking this in for my next scale build. Thnx
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01-06-2012, 07:28 AM | #10 |
Rock Crawler Join Date: Jul 2008 Location: San Marcos, CA
Posts: 729
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
thanks for the post and write up...
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01-06-2012, 10:37 AM | #11 |
Quarry Creeper Join Date: Jun 2007 Location: Idaho Falls
Posts: 281
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up I mounted mine on a 1/8 piece of lexan because the stock servo mount was too low and it would contact the axle at full compression. Easy and cheap. |
01-08-2012, 10:25 AM | #12 |
Pebble Pounder Join Date: Jun 2011 Location: Yucca Valley, CA
Posts: 134
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
Nice detailed write up w/pics thanks for taking the time to do and post up.....
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01-08-2012, 04:47 PM | #13 |
Pebble Pounder Join Date: Dec 2011 Location: Monterey
Posts: 194
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
great mod thread will definately be playing with this one!
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01-08-2012, 05:51 PM | #14 |
Pebble Pounder Join Date: Apr 2011 Location: scranton
Posts: 153
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
Thanks guys i was running mine today all seemed good as far as bump steer ect beside the lack of steering power from the small servo i have one there when i put my jr9100hvt on that will go away. |
01-08-2012, 11:53 PM | #15 | |
I wanna be Dave Join Date: Jun 2004 Location: San Jose
Posts: 5,207
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up Quote:
I ran it the way you have it but wanted to properly locate the axle using a 3 link so I made my own axle truss that had the upper link and panhard mount incorporated into it. The issue I ran into was the servo was too far back, too low and interfered with the panhard bar. I tried another truss with different geometry but still couldn't get it to work like a Hand bros kit. I've done it successfully on a non SCX scaler but its just not worth the time it took when I can buy a kit. I will say the OP did a great write up. | |
01-10-2012, 09:58 PM | #16 |
Pebble Pounder Join Date: Apr 2011 Location: scranton
Posts: 153
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
for most people this way will work just as good as the hand bros. and for thos who have the extra 50 to throw around they will buy it any way but if your going to spend the cash doesn't hurt to try this way first. |
01-11-2012, 12:59 AM | #17 |
I wanna be Dave Join Date: Jun 2004 Location: San Jose
Posts: 5,207
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up I'll have to disagree with you on "will work just as good" but go for it. The real issue with your setup is when you try to run a panhard bar with the servo mounted there. Here's a little tip. While running a Y-link or 4 link suspension run high steer knuckles, it'll help flatten out your drag link angle which will reduce your bumpsteer. Happy crawling
Last edited by rckjeep; 01-11-2012 at 01:03 AM. |
01-11-2012, 05:24 PM | #18 |
Quarry Creeper Join Date: Nov 2005 Location: Louisville, KY
Posts: 361
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
Great idea but on my Honcho it didn't leave much for axle articulation. I'm going to make a plate like doors4u did to raise the servo up higher. I will also make a panhard mount, or try to atleast.
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01-11-2012, 06:16 PM | #19 |
Rock Crawler Join Date: Nov 2009 Location: poteau
Posts: 996
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up
my main question is can you still run the battery in the stock location after doing this? it seems that you have to remove the front crossmember that the battery tray bolts to. also it seems that the servo would not allow the stock battery tray to be reinstalled. is this the case?
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01-11-2012, 06:55 PM | #20 | |
I wanna be Dave Join Date: Jun 2004 Location: San Jose
Posts: 5,207
| Re: scx10 Chassis Mounted Servo CMS mod detailed write up Quote:
EDIT: I can't find any but I'll snap some. Last edited by rckjeep; 01-11-2012 at 11:09 PM. | |
Tags |
axial, cms, scx10, servo, steering |
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