Results 1 to 10 of 10
  1. #1
    RC poster
    Join Date
    Aug 2019
    Posts
    6

    Question Limit range of the servo

    Iíve got a new 25k Hexfly servo and installed it into my Stampdede 4x4.
    It works great, but it rotates couple degrees more than needed when I apply maximum steering. It causes unnecessary strain to other parts, horn touches the base and the driveshaft.

    How can I limit the range of the servo?

  2. #2
    RC Champion olds97_lss's Avatar
    Join Date
    Dec 2003
    Location
    Dekalb, IL
    Posts
    2,351
    Are you using the stock servo arm or did it come with one you can drill a hole in closer to the servo output shaft? If it came with one, you can limit it that way somewhat.

    Depending on the radio you have, you may be able to adjust the end points as well. If it's a TQi, depending on the version, you can adjust that stuff. Info is in the manual.

    https://traxxas.com/sites/default/fi...24GHz-INST.pdf
    Last edited by olds97_lss; 08-19-2019 at 05:37 PM.
    Expert rigging at it's best!

  3. #3
    RC poster
    Join Date
    Aug 2019
    Posts
    6
    Even stock arm touches the driveshaft, so drilling a new hole won’t help : (
    I have stock radio wit a single center adjustment knob.
    I haven’t found any info in the original manual.

    Are there any other ideas?

  4. #4
    RC Champion olds97_lss's Avatar
    Join Date
    Dec 2003
    Location
    Dekalb, IL
    Posts
    2,351
    If it's the old AM one:
    https://traxxas.com/products/parts/l...arts/2227tq4ch

    Or this one:
    https://traxxas.com/products/parts/6516

    I don't think you can adjust it at the radio and can only adjust it mechanically. Short of that, you have to get a transmitter/receiver that has the adjustments built into them.
    Expert rigging at it's best!

  5. #5
    RC poster
    Join Date
    Aug 2019
    Posts
    6
    6516 is the transmitter I have.

    I suspected that getting a new transmitter is the only option, but was hoping someone can suggest another option.

    Is there any option to mechanically adjust the servo? Some magic adjustment knob inside the servo body?

  6. #6
    RC Racer
    Join Date
    Jan 2019
    Posts
    184
    Quote Originally Posted by olds97_lss View Post
    Are you using the stock servo arm or did it come with one you can drill a hole in closer to the servo output shaft? If it came with one, you can limit it that way somewhat.
    This is what he said.

  7. #7
    RC Qualifier
    Join Date
    Jul 2013
    Location
    Northern Norway
    Posts
    867
    Quote Originally Posted by dima81 View Post
    6516 is the transmitter I have.

    I suspected that getting a new transmitter is the only option, but was hoping someone can suggest another option.

    Is there any option to mechanically adjust the servo? Some magic adjustment knob inside the servo body?
    From the top of my head, I can think of three options to limit the servo throw electronically without changing the Tx:

    https://www.freewebstore.org/heyok-p..._18344974.aspx

    https://modelradioworkshop.co.uk/sho...oint-adjuster/
    (I use three of these in my TRX-4)

    http://www.simprop.de/Seiten/Modellb...ateReverse.htm

    These devices are not waterproof, but will fit into the receiver box.

  8. #8
    RC poster
    Join Date
    Aug 2019
    Posts
    6
    Thank you very much, @Viking

  9. #9
    RC Champion olds97_lss's Avatar
    Join Date
    Dec 2003
    Location
    Dekalb, IL
    Posts
    2,351
    Quote Originally Posted by Viking View Post
    From the top of my head, I can think of three options to limit the servo throw electronically without changing the Tx:

    https://www.freewebstore.org/heyok-p..._18344974.aspx

    https://modelradioworkshop.co.uk/sho...oint-adjuster/
    (I use three of these in my TRX-4)

    http://www.simprop.de/Seiten/Modellb...ateReverse.htm

    These devices are not waterproof, but will fit into the receiver box.
    Man, I completely forgot about those things!
    Expert rigging at it's best!

  10. #10
    RC Qualifier
    Join Date
    Jul 2013
    Location
    Northern Norway
    Posts
    867
    You're welcome, dima81.

    Quote Originally Posted by olds97_lss View Post
    Man, I completely forgot about those things!
    That's why us old-schooler's get increasingly flat foreheads with age...

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •