Results 1 to 21 of 21
  1. #1
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831

    upper chasis , direct drive servo mount ?

    anyone try making one of these , seems like a good idea to remove the bellcrank


    Sent from my iPad using Tapatalk

  2. #2
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    im so tired pf breaking the tabs on the stock chasis maybe only safe for metal gear servos

  3. #3
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    i bet i can modify the stampede chasis to work as a upper chasis for the rustler


    Sent from my iPad using Tapatalk

  4. #4
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    the rustler one bends easy , i ll post pics if i get this to work , i hate all that bellcrank slope

  5. #5
    RC Qualifier
    Join Date
    Nov 2018
    Location
    Livermore, CA
    Posts
    564
    Quote Originally Posted by Role View Post
    im so tired pf breaking the tabs on the stock chasis maybe only safe for metal gear servos
    You would still run a servo saver I would imagine just like how the stampede is set up.

    Bellcranks can have a decent fit. On my aluminum chassis built I run the strc cranks along with a savox 1258 and a kimbrough 124 servo saver. The only slop is coming from anywhere other than the cranks, like the bearing carriers, a arm retaining pins, etc.
    Last edited by TwoBelugas; 05-22-2020 at 11:54 AM.

  6. #6
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    the real problem is the plastic posts break - I even put a screw thru them and my son still seems to break them

  7. #7
    RC Qualifier
    Join Date
    Nov 2018
    Location
    Livermore, CA
    Posts
    564
    That’s the nature of plastic. You can go aluminum parts to get rid of the flex and such, but then there is whole other set of problems to deal with.

  8. #8
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831

    so far so good



    Sent from my iPad using Tapatalk

  9. #9
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    bye bye bellcrank !

  10. #10
    RC Qualifier RC Dad's Avatar
    Join Date
    Jul 2019
    Location
    Boston
    Posts
    488
    Thatís pretty interesting! Iím curious how well it will hold up with your boy bashing it.


    Sent from my iPhone using Tapatalk

  11. #11
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    it still uses the servo saver just the stampede one , I just ran it , It a noticeable difference, no play , took about 1 1/2 hrs , maybe using the stampede chasis may save some cutting

  12. #12
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    no posts to break

  13. #13
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    here is how to do it:
    -grind the posts and front body notch of the chasis
    - make a template of your servo so you can cut the chasis
    - get stampede servo saver
    - mount the servo with the slins facing the back of the car
    -i did grind about an 1/8 off my rpm shock tower
    - mount the servo from the bottom so you get more clearance for you body mount

  14. #14
    RC Qualifier RC Dad's Avatar
    Join Date
    Jul 2019
    Location
    Boston
    Posts
    488
    Nice! Iím going to try that out next time my bellcrank bearings get all gummed up. Thanks for sharing man!


    Sent from my iPhone using Tapatalk

  15. #15
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    i bet if you just buy the stampede chasis and cut it and add a piece of metal to the end it would save you a bunch of grinding

  16. #16
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    maybe a piece of aluminum for the top chasis would add some strength too

  17. #17
    RC Champion NYbandit33's Avatar
    Join Date
    Mar 2011
    Location
    NY
    Posts
    1,190
    Came across an interesting article online but wont let me paste the link

    If you search on google “beat your truck Slash-4x4-Servo-Saver-onto-Rustler“

    Person in this post also mounted the servo on top of the upper chassis
    Last edited by NYbandit33; 05-25-2020 at 08:05 PM.
    Monster Baja Sla2h VXL
    Rustler VXL

  18. #18
    RC Qualifier Synnergy's Avatar
    Join Date
    Jun 2017
    Location
    Orygun
    Posts
    920
    Quote Originally Posted by Role View Post
    anyone try making one of these , seems like a good idea to remove the bellcrank


    Sent from my iPad using Tapatalk
    Whatup fellas! I tried that out a while back with this rig:





    It held up pretty well...



    Funny thing, the carbon shock tower broke before anything else. I used a kimbrough servo-saver on that one...there's a build thread on that I think. It was fun...real light-weight. I was trying to see what I could do with a titan 12T. The chassis/components were all (jangified)^2

    MTFBWY

  19. #19
    RC Champion Mr Wolf's Avatar
    Join Date
    Feb 2011
    Location
    Malmesbury, UK
    Posts
    1,715
    The key point of using a bellcrank is to ensure correct Ackermann geometry for the steering. Has anyone measured how the Ackermann of this direct steering approach compares to that of the standard bellcrank?

    If you've no idea what I'm talking about then read this. https://en.wikipedia.org/wiki/Ackerm...ering_geometry
    Pretty please, with sugar on top, clean the RC car

  20. #20
    RC Qualifier
    Join Date
    Sep 2012
    Location
    Hammonton Nj
    Posts
    831
    It works fine , The stampede has this same set up , just a lot less moving parts - weight ….. and more important to plastic posts to snap off , I must admit I didn't ever hear of the Ackerman thing thanks for posting it, I can tell you the steering is a little faster

  21. #21
    RC Qualifier
    Join Date
    Mar 2017
    Posts
    378
    We were discussing this sort of thing in the 2pede forum.
    And here I find people changing rustlers to pede steering!

    No hard data, but when you push the pede down you can see the wheels change angle.
    When I push my Slash 4x4 down, it’s noticeably better, but not gone completely.

    Bump steer, or change in angle is worse on the pede.
    Lag from friction and steering slop is worse on bell crank models.

Posting Permissions

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