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01-11-2017, 11:58 AM | #1 | |||||||||||||||||||
I wanna be Dave Join Date: Oct 2008 Location: Golden
Posts: 2,588
| Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
The other thread was getting cluttered with various topics, so I figured there should be a few threads for the specific topics in that thread so that the information is easier to find. This first post will hopefully help document the issues users are having with the stock servo, the second post below will be some of the information quoted from the other thread for those that have replaced the servo to show what aftermarket options are known to work. Please feel free to post in this thread if you have had problems with the stock servo, and what you have done to fix it or what you replaced it with. There is a different thread for ESC/RX issues, so please keep this thread as OEM servo issues and upgrade/replacements that are known to work. Stock Servo: The stock servo seems to be the main weak point and is known to be likely to fail very quickly in these little rigs. Axial provides a warranty, and you can contact them for a replacement if you want to receive the same Tactic servo that came with it. If you are looking to swap to something better, see post 2 for some examples of what other users have swapped to. Issues users have reported: (Edited posts to remove irrelevant info and pictures) Quote:
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So, basically, the stock servo is very weak, the servo saver is weak, and you will likely kill the stock servo with 2S LiPo (according to the reports above). Axial seems to be good about replacing it if it fails, but only with the same servo. See post #2 for some servos other users have reported to work. | |||||||||||||||||||
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01-11-2017, 11:58 AM | #2 | |||||||||||||||
I wanna be Dave Join Date: Oct 2008 Location: Golden
Posts: 2,588
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
If you are looking to replace the stock servo with something else, Axial included some parts in the box to be able to do so relatively easily. There are various servo savers for different servo splines, and a set of servo mounts for servos that are larger than the stock size. There are reports of users replacing the servo on the stock 2-in-1 ESC/RX combo, but also reports of it not working. Most recommend replacing the entire electronics set-up. (That means new ESC, Receiver, Servo, and possibly motor and battery as well!) Here are some reports of other servos that may work: Quote:
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Last edited by monkeyracer; 01-11-2017 at 12:22 PM. | |||||||||||||||
01-11-2017, 12:42 PM | #3 |
Quarry Creeper Join Date: Sep 2013 Location: New Zealand
Posts: 342
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
Great idea! If anyone has much info on fitting a fullsize servo (Poprivet), it would be much appreciated! Looks like people just servo tape them down?
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01-11-2017, 01:18 PM | #4 | |
I wanna be Dave Join Date: Oct 2008 Location: Golden
Posts: 2,588
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options Quote:
There may be other ways to stuff one in, and I'd love to see it done. | |
01-11-2017, 01:34 PM | #5 |
I wanna be Dave Join Date: Apr 2015 Location: Roseville, Ca
Posts: 2,506
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
Hitec 225mg with losi mrc steering post. 67oz, .11sec at 6v.
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01-11-2017, 01:44 PM | #6 |
I wanna be Dave Join Date: Jan 2005 Location: Raleigh-ish vicinity
Posts: 3,846
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
I just installed a Gotek DC2124T in my truck; 80 oz and .12 at 6V. It is the same size as the stock servo but the mounting ears are moved up higher. I'll get a driving report as soon as I can get some soldering done in my garage without freezing. Goteck vs stock servo: just a hair taller but much different mounting ears. Installed in the truck. I used the servo mounts and a couple of spacers from the spare parts plus a couple M2.5x10 screws for mounting. Last edited by svt923; 01-11-2017 at 06:30 PM. |
01-12-2017, 08:58 AM | #7 |
Quarry Creeper Join Date: Jan 2016 Location: Boulder
Posts: 222
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options I would also love to see a write up from one of the full-size servo installations. I killed the gears in a 5 day old Savox Sh253 and am getting ready to replace it with a Hitec 5085. I have my doubts as to whether it'll last very long or if the 30 more ounces of torque will really make that much of a difference. Plus, with the announcement of the Spektrum S6240 it looks like we may start seeing more one-piece servo/receivers on the market. That'll make it easier to cram stuff into smaller chassis.
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01-13-2017, 05:49 AM | #8 |
Newbie Join Date: Oct 2016 Location: ohio
Posts: 4
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
My stock servos gears stripped, and I replaced it with a Savox sh0255mg. Huge difference in performance. The profile and size is nearly identical to stock and the stock servo saver fit. It's plenty fast and the power greatly increased over the stock unit. Specs- .13 and 54oz at 6v. I swapped to a Hobbywing 1080 esc (internal BEC set @ 6v) and am using a Spektrum srs4210 reciever with AVC. Using a 2200 2s the thing is a blast.
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02-05-2017, 10:47 PM | #9 |
Quarry Creeper Join Date: Nov 2014 Location: WA
Posts: 375
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
anyone tried the Savox SW0250MG ? Also it uses the 21t servo horn that I cant find anywhere... |
02-06-2017, 05:05 PM | #10 |
Pebble Pounder Join Date: Aug 2015 Location: Newfoundland
Posts: 118
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options |
02-09-2017, 06:28 PM | #11 |
Newbie Join Date: Sep 2016 Location: Northern Nevada
Posts: 2
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options |
02-09-2017, 06:56 PM | #12 |
Quarry Creeper Join Date: Nov 2014 Location: WA
Posts: 375
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options |
02-09-2017, 07:41 PM | #13 |
Newbie Join Date: Sep 2016 Location: Northern Nevada
Posts: 2
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options I was getting frustrated with it at the time I found your post and replied to it. Looking at it if you use the axial servo mounts in your parts bag you will need to make spacers in between the servo and the mounts to get the back end of the servo off the axle shaft. I will have to work on it later but that should do the trick
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02-09-2017, 09:33 PM | #14 |
I wanna be Dave Join Date: Jul 2014 Location: Deep South
Posts: 3,444
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
I put one of these in: JX PDI-1171MG 17g Metal Gear Core Motor Micro Analog Servo for RC Models Sale - Banggood.com So far so good without a servo saver. |
02-09-2017, 11:38 PM | #15 | |
Quarry Creeper Join Date: Nov 2014 Location: WA
Posts: 375
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options Quote:
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02-25-2017, 07:59 PM | #16 |
Rock Stacker Join Date: Nov 2016 Location: somewhere very rocky
Posts: 89
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
I striped out my spur gear. Where can I get a steel one and a different pinion?
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06-17-2017, 07:47 PM | #17 |
Newbie Join Date: Jun 2017 Location: seaside
Posts: 1
| Re: Yeti Jr (RR and TT) Stock Servo Issues and Replacement Options
I just got a HS-85 servo to replace the stock and am having some trouble installing, any suggestions or pictures, thanks in advance
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