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  1. #1
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    Single or Double?

    Servo. Are people running 1 or 2 servo's? Is there any benefit to running a single servo over a double? What are people's experiences?

  2. #2
    RC Turnbuckle Jr. Cameron's Avatar
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    Running 1 servo eliminates the chance that 2 servos become un-centered to each other, and fight each other leading to early failures.
    I would lean towards the common theme is run the 2 stockers till 1 fails then replace them both with a single better servo (300oz.tq) and keep a 2075 for spares
    (RAH) (AH) + [ROMA (1+MA)] + (GA) + (OOH)(LA)

  3. #3
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    i run dual 2075s. they are waterproof, have not died yet and have enough power, barely, to turn 40 series trenchers. when they die ill probably swap in dual 300+ oz/in servos just for that much more overkill.

  4. #4
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    I think that time has come

  5. #5
    RC Turnbuckle Jr.
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    I have a hitec 7950th coming next week ! 403lbs at 6 volts
    That will do the job!

  6. #6
    RC Turnbuckle Jr. 87 GN's Avatar
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    single....

    did you adjust the stockers

    http://www.youtube.com/watch?v=kSrAvhm3b1g
    Would you go flip my truck back over??

  7. #7
    RC Turnbuckle Jr. MITCH316's Avatar
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    I run single servo in all my trucks...I'll never go back to dual.
    Rock n Rolla !

  8. #8
    RC Turnbuckle Jr. humayrayakongkinaon's Avatar
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    heck i'm running a single 2075 all along and never had a problem, maybe i dont bash hard enough hahahha
    | Rally GT8 Powered By CC | 360mm XO-1 GT |

  9. #9
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    If you have stock tires, dual stockers are fine.
    Anything more, bigger duals are better.

    Best option is always a faster, single servo with 300+ oz. Remember speed is important too.

    A single servo is easier. Less moving parts.
    Its also more durable as there is no chance the servos will be fighting each other. The better quality the servo, the more in sync they need to be.

    There are not many strong water proof servos out there yet, but it is VERY easy to waterproof your own.

  10. #10
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  11. #11
    RC Turnbuckle Jr. pavmentsurfer's Avatar
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    A single servo is simply a better setup because there are less moving parts. Less moving parts is always better. Especially when they are little tiny electronic parts. IMO, getting a good quality single servo is a better choice than going with a cheap version. The servo is what steers your very fast truck. You want to know its going to work when you want/need it to.
    Pede, Summit,
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    Motley Crew, 1SQ

  12. #12
    RC Turnbuckle Jr. 87 GN's Avatar
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    Quote Originally Posted by Wayne88 View Post


    This is a 1/5th scale large-size servo with a surprising amount of power available

    IDB that is a 1/5 scale servo...........not going to fit....
    Would you go flip my truck back over??

  13. #13
    Marshal ksb51rl's Avatar
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    Quote Originally Posted by Wayne88 View Post
    Gotta look at more than the torque and price to pick an appropriate servo. That is a very large servo and is only as cheap as it is because it doesn't therefore need so much miniaturization.
    Alt-248 on the number pad =

  14. #14
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    I ran the stockers until the gears stipped out, didnt take all the much time.

    Im running a single now, JR Z9100HVT
    480oz torque at 7.4V but i run it at 6V so reduce by 10% to 432oz.

  15. #15
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    What servo's are you all running for singles? Would be more ideal if it was waterproof i know that limits the choice some what. Water resistant may also be an option for me.

  16. #16
    RC Turnbuckle Jr.
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    The hitec 7950th is water resistant

  17. #17
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    I dont run in water so water proof is of no concern personally. Biggest reason I dont is Im a bit picky on keeping my small but still growing fleet immaculate and once you introduce water and dirt it becomes harder to clean. Somehow Ive managed to keep all traxxas. 2x slash 4x4, 1x slash 2wd and 2x ERBE.

  18. #18
    RC Turnbuckle Jr. 87 GN's Avatar
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    Would you go flip my truck back over??

  19. #19
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    hey 87 would you happen to know off the top of your head how many splines the savox servos have? or what servo arm do you use? i bought the one you had suggested and never thought of the arm to get duh on my part

  20. #20
    Marshal ksb51rl's Avatar
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    Savox uses a Futaba (same as Traxxas) 25-Tooth spline

    FWIW...
    23T
    * Airtronics: 23T
    * JR: 23T
    * KO: 23T
    * MRC: 23T
    * Multiplex: 23T
    * Sanwa: 23T
    * Spektrum: 23T

    24T
    * Hitec: 24T

    25T
    * Ace/Thunder: 25T
    * Cirrus: 25T
    * Duratrax: 25T
    * Futaba: 25T
    * Hobbico: 25T (Some servos like the CS-170 uses 24 splines)
    * HPI: 25T
    * Kyosho: 25T
    * Power HD: 25T
    * Savox: 25T
    * Tamiya: 25T
    * Team Associated: 25T
    * Tower: 25T
    * Traxxas: 25T
    Last edited by ksb51rl; 12-06-2012 at 04:13 PM.
    Alt-248 on the number pad =

  21. #21
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    so i can use the stock arm?

  22. #22
    RC Turnbuckle Jr. MITCH316's Avatar
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    I've been running that Savox SA-1230-SG in my Summit for 2 months now without an external BEC...its an awesome servo, and I am running the Savox SA-1231-SG in my eSlayer...I am happy with the Savox servos.

    I am using the STRC STP6037S Alum Single Steering Servo Saver Arm and Ofna #10776Alum Servo Arm Horn 25-Tooth on both these builds.
    Rock n Rolla !

  23. #23
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    wow thank you both alot good info i bought the savox 1230 for my erevo mainly because well for 1 its a single servo and 2 that i run the big trencher X tires

  24. #24
    RC Turnbuckle Jr. 87 GN's Avatar
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    Quote Originally Posted by hottrodd1090 View Post
    so i can use the stock arm?
    yes..... & for a few $$ you can upgrade
    Would you go flip my truck back over??

  25. #25
    Marshal ksb51rl's Avatar
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    Quote Originally Posted by hottrodd1090 View Post
    wow thank you both alot good info i bought the savox 1230 for my erevo mainly because well for 1 its a single servo and 2 that i run the big trencher X tires
    The ERBE's BEC is 5.5V stock. The Summit's BEC is 6.0V stock. I hope the power-hungry Savox works as well with the Mamba Monster.
    Alt-248 on the number pad =

  26. #26
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    i can change my bec to 6.0 i believe i am almost positive the last time i used my castle link i saw that.

  27. #27
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    can you give me a link to the ofna servo horn i cant seem to find the on the bay or one that will work

  28. #28
    RC Turnbuckle Jr. MITCH316's Avatar
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    I'll look for one...I bust my external BEC and am now running off the MMM esc. I set to 6V and am running my hitec 7950th off it with no issues...about 3 weeks now...I probably won't put a BEC back on.
    Rock n Rolla !

  29. #29
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    You most likely wont have issues out of the Hitech. Ive run Stock, Hitech, Savox, JR and Futaba. The only one that gave me issues with the onboard BEC was the Savox line.

  30. #30
    RC Turnbuckle Jr. MITCH316's Avatar
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    Quote Originally Posted by hottrodd1090 View Post
    can you give me a link to the ofna servo horn i cant seem to find the on the bay or one that will work
    Mate, I cant seem to find the OFNA servo horn. Here are a few links to others that should work with your Savox servo.

    http://www.ebay.com/itm/NEW-Axial-Al...item5aea70342e

    http://www.ebay.com/itm/Steering-Alu...item2a26fbebd1

    http://www.ebay.com/itm/Servo-Arm-ho...item4abf73fff9
    Rock n Rolla !

  31. #31
    Marshal ksb51rl's Avatar
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    Quote Originally Posted by craig.mitch316 View Post
    Mate, I cant seem to find the OFNA servo horn. Here are a few links to others that should work with your Savox servo.

    http://www.ebay.com/itm/NEW-Axial-Al...item5aea70342e

    http://www.ebay.com/itm/Steering-Alu...item2a26fbebd1

    http://www.ebay.com/itm/Servo-Arm-ho...item4abf73fff9
    While those will work, they are also overkill, even for up to 486 oz-in of torque. I've installed the Axial one (first link) and it is nicely massive. I've had no problem with installing three of these Dynamite horns (first 4 entries) and all are still functioning well.
    Alt-248 on the number pad =

  32. #32
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    ^This is one reason I went with a Hitec when I made my purchase 3 weeks ago. Everything I needed came in the box. The only mods needed were enlarging the mounting hole on the included plastic horn to accept the 3mm stock screw. I also threw in a HD spring (5344x) too beef up the stock servo saver. Call me crazy, but I didnt feel a metal horn was necessary on this truck.

    One of the best budget servos is a Hitec 7954 for $85 off of Amazon. I confirmed with a Hitec rep that purchases off of eBay or Amazon are still covered under warranty.
    Its All relative to your perspective.

  33. #33
    Marshal ksb51rl's Avatar
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    Quote Originally Posted by anr2442 View Post
    ^This is one reason I went with a Hitec when I made my purchase 3 weeks ago. Everything I needed came in the box. The only mods needed were enlarging the mounting hole on the included plastic horn to accept the 3mm stock screw. I also threw in a HD spring (5344x) too beef up the stock servo saver. Call me crazy, but I didnt feel a metal horn was necessary on this truck.

    One of the best budget servos is a Hitec 7954 for $85 off of Amazon. I confirmed with a Hitec rep that purchases off of eBay or Amazon are still covered under warranty.
    All 4 horns I mentioned were mounted on Hitec 79xx servos. The plastic horns are not up to the tasks I set for my trucks.
    Alt-248 on the number pad =

  34. #34
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    I may need to look at the single servo mod...seems like every one is doing it...must be for a good reason .

  35. #35
    RC Turnbuckle Jr.
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    for my hitec this is the horn i have ofna 10774

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