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01-31-2007, 05:50 PM
| #1 |
| Newbie Join Date: Oct 2006 Location: long island
Posts: 10
|  Servos seem sketchy
Hey guys, I have two Hitech HS-645MG servos with Kimbrough servo savers in my TXT-1 that I have been having some problems with. I am fairly new to this but believe that I have set them up right (I tried to set them to neutral but they still needed some tweaking). Anyway, the wheels start off straight but as soon as the truck starts moving and turning the alignment gets all out of wack and the truck does not run straight or turn correctly. It's like these things have a mind of their own. If I pick the truck up and turn the steering it's fine. What's the deal? Any help on setting these servos up and the issue at hand is appreciated. Thanks. |
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01-31-2007, 06:06 PM
| #2 |
| I wanna be Dave Join Date: Oct 2005 Location: Columbia TN
Posts: 6,154
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Loose the servo savers and see if that changes anything.
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01-31-2007, 08:16 PM
| #3 |
| TEAM MODERATOR   Join Date: May 2004 Location: Tennessee
Posts: 10,855
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We had an old 645 laying around we would run as a spare or use it for mock up when building mounts. We called it " Ol' twitchy"  While in the rig,you'd turn the Tx wheel and it would turn(as well as a 645 would anyway)and when it hit the steering stops,it would twitch back and forth a bit. When you'd let go of the Tx wheel to go back to center and drive straight,sometimes it wouldn't quite make it back to center. I always assumed it was the steering pot in the servo that was going bad. Could be the same with yours maybe if it centers one time but not the next.
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01-31-2007, 08:25 PM
| #4 |
| Keep it real  Join Date: Jun 2006 Location: Yakima,WA
Posts: 6,532
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I'm thinking it is probably the servo savers as well, I had a kimbrough heavy duty one on my tlt, and it would do just what you are describing.
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01-31-2007, 09:21 PM
| #5 |
| I wanna be Dave   Join Date: Feb 2005 Location: Burnsville
Posts: 3,096
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No matter what servo you use, a servo saver will give the steering some float in a TXT or other large vehicle.
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01-31-2007, 09:31 PM
| #6 | |
| TEAM MODERATOR Join Date: May 2004 Location: Tennessee
Posts: 10,855
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Was that aimed at me? I don't use servo savers  | |
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02-01-2007, 06:23 AM
| #7 |
| Newbie Join Date: Oct 2006 Location: long island
Posts: 10
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Thanks guys. I have since removed the Kimbrough servo savers and installed one of the arms that came with the 645Mg's. I just drove it around the carpet a bit and so far but it seems to be better. Now all 4 wheels turn at a stand still while on the carpet, and while I was driving the truck seemed to straighten out at neutral. I will know more when I test it outside on some real terrain. As far as the servo savers, I was using them becuse I thought it was the best way to go as far as 'saving the servos'. I guess I just have to be real careful without them as far as hitting anything at faster speeds. Is there any other recommendations of servo savers that won't cause this same problem, or do you guys just do without them? Thanks for the help. |
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02-01-2007, 11:43 AM
| #8 | |
| Quarry Creeper Join Date: Nov 2005 Location: The Great White North
Posts: 465
| Quote:
I do run a servo saver on most of my rigs, but you have to pick the right one for the application. The stock servo savers that come with most trucks, are meant to be used with a stock servo, so the springs in them have to be fairly weak to protect the plastic gears. If you are gonna run a metal geared servo such as the 645MG, you need to run a servo saver with a stronger spring... Such as... http://www2.towerhobbies.com/cgi-bin...?&I=LXFNE8&P=7 I run this one on my rig 2.2 rig. The spring is strong enough that it will still turn the tires on carpet, but takes the edge off any big hits. | |
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02-01-2007, 11:51 AM
| #9 | |
| TEAM MODERATOR Join Date: May 2004 Location: Tennessee
Posts: 10,855
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Linear Mode
