Go Back   RCCrawler Forums > RCCrawler General Tech > Electronics
Loading

Notices

Thread: possible steering servo issue

Reply
 
LinkBack Thread Tools Display Modes
Old 12-02-2015, 08:16 AM   #1
Rock Stacker
 
Join Date: Nov 2015
Location: Lubbock
Posts: 95
Default possible steering servo issue

Have a Spektrum S6090 servo running at 7.4v for steering on the Yeti and I noticed last night when turning left and then releasing the wheel, the tires will center up but when turning right, they return just short of center. You can bump the wheel on the tx and get them to center. This is with the vehicle stationary with all tires on the ground. With the front end lifted, we seem to have zero problem with the tires returning to center from either direction. Is this an adjustment issue or do we have a bad servo?
amped up is offline   Reply With Quote
Sponsored Links
Old 12-02-2015, 08:55 AM   #2
I wanna be Dave
 
Join Date: Jan 2005
Location: Raleigh-ish vicinity
Posts: 3,846
Default Re: possible steering servo issue

Are you running the stock servo saver? The spring is pretty soft out of the box and makes the steering feel mushy. The servo saver would explain why you don't have centering problems with the tires in the air.
svt923 is offline   Reply With Quote
Old 12-02-2015, 09:06 AM   #3
Rock Stacker
 
Join Date: Nov 2015
Location: Lubbock
Posts: 95
Default Re: possible steering servo issue

Yes sir, everything else is stock from the kit.
amped up is offline   Reply With Quote
Old 12-02-2015, 09:23 AM   #4
I wanna be Dave
 
Join Date: Jan 2005
Location: Raleigh-ish vicinity
Posts: 3,846
Default Re: possible steering servo issue

There are a few fixes that range from cheap to not so cheap.

1. Throw a 10x15 bearing or bushing on top of the servo saver spring to compress it and reassemble.

2. Replace the spring with a lock out bushing (DCW Yeti Servo Saver Lockouts aka Dude Rangz)

3. Replace the entire steering system with an aluminum bellcrank setup (VP, ST Racing, Hot Racing)
svt923 is offline   Reply With Quote
Old 12-02-2015, 09:40 AM   #5
Rock Stacker
 
Join Date: Nov 2015
Location: Lubbock
Posts: 95
Default Re: possible steering servo issue

I will be going with option 3 as things start to break or get sloppy as this seems to be the norm. I might try option 1 for now to see if it at least corrects the issue so I can rule out the servo.
amped up is offline   Reply With Quote
Old 12-02-2015, 01:03 PM   #6
Rock Stacker
 
Join Date: Nov 2015
Location: Lubbock
Posts: 95
Default Re: possible steering servo issue

Seems the servo saver is lifting as the wheels try to go back to center. Didn't realize the spring was that big of a POS.
amped up is offline   Reply With Quote
Old 12-02-2015, 06:14 PM   #7
I wanna be Dave
 
Join Date: Aug 2006
Location: under a rock and a hard place
Posts: 5,443
Default Re: possible steering servo issue

That spring only collapses for a couple of reasons,

1) your servo is going past the mechanical limit of the steering throw.

2) you have hit something while driving and themsaver just saved your servo.

3) its a POS and not strong enough lol

Check your end points on the radio so as to save your servo from overworkimg its self. You may also need a stronger servo. It is not uncommon for a weakish servo to not have enough power to center when the vehicles weight is on the wheels.
hotwheels000 is offline   Reply With Quote
Old 12-12-2015, 01:18 AM   #8
Rock Stacker
 
Join Date: Nov 2015
Location: Lubbock
Posts: 95
Default Re: possible steering servo issue

Thought I had the issue fixed but when I replaced the bellcrank with the Hot Racing one, it's back. Now I'm not running a BEC on the servo, using the one built into the MMP to handle it (programmed at 7.o volts). Should I wire up my external BEC or do we think its a servo issue (not strong enough)? Looking at replacing it with the Savox 1230SG if that's the case.

Last edited by amped up; 12-12-2015 at 01:22 AM.
amped up is offline   Reply With Quote
Reply



possible steering servo issue - Similar Threads
Thread Thread Starter Forum Replies Last Post
XR10/Steering Servo Issue Moaxr10 Newbie General 8 10-28-2014 06:50 AM
Steering Issue. Maybe not the servo? CHawk68462 Axial SCX-10 11 05-29-2013 02:34 PM
Wraith steering servo issue wheeler chaos Axial Wraith 6 03-30-2012 04:16 AM
New Build - Servo / Steering issue Slaughter Axial SCX-10 7 05-24-2011 07:23 PM
Servo Issue - Lost Steering flowingmotion Axial AX-10 Scorpion 15 01-11-2010 06:47 PM
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 04:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.
Copyright 2004-2014 RCCrawler.com