Results 1 to 22 of 22
  1. #1
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142

    Project: M8 TRX6

    New project time... Just got the first part to my TRX6-based M8...

    Untitled by Scott O, on Flickr
    Submarine Qualified, Chief Inducted, Navy Retired

  2. #2
    RC Competitor
    Join Date
    May 2020
    Posts
    88
    Quote Originally Posted by Greatscott View Post
    New project time... Just got the first part to my TRX6-based M8...

    Untitled by Scott O, on Flickr
    What is that exactly?

    Sent from my SM-G986U using Tapatalk

  3. #3
    RC Racer
    Join Date
    Jun 2017
    Location
    Belgium
    Posts
    225
    I don't know what the M8 stands for, but I think I've seen that crane before.


  4. #4
    RC Turnbuckle Jr. rag6's Avatar
    Join Date
    Mar 2008
    Location
    Accepting requests for bashing at GREENWOOD BASHPLEX in Pittsburgh PA!! Check the thread in the track buddy forum and reply there or pm
    Posts
    15,607
    8x8... How many axles will steer?

    Sent from my moto e5 cruise using Tapatalk
    Ya can't polish fertilizer...

  5. #5
    RC Qualifier TITANIUM94010's Avatar
    Join Date
    Sep 2019
    Location
    San Francisco CA
    Posts
    532
    Not sure what you meant by M8, but this is undoubtably going to be a great build!
    Are you reffering to the Swiss Sauer M8? Or a military 8x8 like the one pictured above?

    I'd love to see how this turns out, good luck!
    Jumping: maneuver and pray it won't break.

  6. #6
    RC Champion
    Join Date
    Feb 2020
    Location
    Canary Islands, Tenerife, Spain.
    Posts
    1,787
    Hope to see the results soon.

  7. #7
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    Well, here is the second part...

    The detail is amazing. I am even more amazed it arrived in great condition, it was sent in a plastic bag, with not protection at all.

    Untitled by Scott O, on Flickr

    Man, I was Traxxas sold the TRX6 as a kit, with no body or electronics...

    Oh well, I have abused my TRX6 body, and will need replacing soon.
    Submarine Qualified, Chief Inducted, Navy Retired

  8. #8
    RC Champion
    Join Date
    Feb 2020
    Location
    Canary Islands, Tenerife, Spain.
    Posts
    1,787
    Quote Originally Posted by Greatscott View Post
    Well, here is the second part...

    The detail is amazing. I am even more amazed it arrived in great condition, it was sent in a plastic bag, with not protection at all.

    Untitled by Scott O, on Flickr

    Man, I was Traxxas sold the TRX6 as a kit, with no body or electronics...

    Oh well, I have abused my TRX6 body, and will need replacing soon.
    This project is outstanding.

  9. #9
    RC Racer
    Join Date
    Jun 2017
    Location
    Belgium
    Posts
    225
    I think I've seen that cab before

    A TRX-6 kit would be nice.

  10. #10
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    Finally got caught up on my school work, and carved out a little bit of time to work on this project.

    First, I ripped apart an old servo and turned it into an ESC. It works great, the next step is figuring out the resistance balace between the two directions so I can replace the pot with resistors. I think it is 2.5kohm on each side, but I need to play with it to find out.

    Untitled by Scott O, on Flickr

    Next, I used the ESC to figure out what channels are what on this thing, thankfully, after the multi-ESC circuit, the wiring is straight forward. I was a bit surprised, the wiring going into a slip-ring, so I do not have to limit rotation at all.
    If you are interest, here are the colors:
    Blue/Yellow: Winch
    Purple/Green: Boom in/out
    Black/Red: Back lift (single)
    White/Orange: Front Lift (dual)

    Untitled by Scott O, on Flickr

    The little board on the base is a 5 ch ESC, that gets power and signal through what looks like a standard 3-conductor servo connector. Given that I have no plans of buying the radio needed to run this guy, it will find its way into a landfill via my trashcan; after removing the servo lead, of course.

    At a tipping point between deciding if I am going to rip apart five servos for their controllers (will use the rest of the servo as a servo winch), or just get five HW1060s. Given that this thing runs off of 30awg wire, I am leaning towards the servo controllers.
    Last edited by Greatscott; 09-14-2020 at 08:03 PM.
    Submarine Qualified, Chief Inducted, Navy Retired

  11. #11
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    The first speed control is built and tested, four more to go. I also have to design cases for them... fun stuff!!!!

    Untitled
    Submarine Qualified, Chief Inducted, Navy Retired

  12. #12
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    I am making slow, but steady progress on this.

    I have four of the five ESCs wired and installed, #5 should come in sometime around the end of the week. These are all getting wired up to a DX6e six channel RX, and will be powered off of a CC 2.0 BEC fed off the main battery.

    I designed and printed the ESC tree and stand, a cover that looks like a GENSET will go over the top of it. The GENSET has working doors that line up with the pots for easy access for adjustment!

    Untitled by Scott O, on Flickr

    Untitled by Scott O, on Flickr

    Untitled by Scott O, on Flickr

    In case you are wondering...

    P = Pedestal (the base at the bottom)
    W = Winch
    B = Boom (extend/retract)
    RS = Raise Single
    RD = Raise Double
    Submarine Qualified, Chief Inducted, Navy Retired

  13. #13
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    You ever get done wiring something up, and say, "My God, what have I done?"

    Untitled by Scott O, on Flickr

    Its actually not as bad as I thought it would be, I still have the signal wires to connect to the RX. After testing I might get rid of the switches, but for right now they allow me to turn on only what I want for testing without having to break connections.

    Once everything gets tested, no one will know this mess is there...

    Untitled by Scott O, on Flickr

    Oh, and incase you are wondering, the servo controllers didn't work out well. No matter what I did the controllers would go out of balance and start driving. It actually made for some hillarious testing, I wish I would have gotten on camera. But, it became obvious very quickly that I would have to find another solution. I found some low power ESCs with instant reverse that seem to be perfect for this project.
    Submarine Qualified, Chief Inducted, Navy Retired

  14. #14
    RC Qualifier TITANIUM94010's Avatar
    Join Date
    Sep 2019
    Location
    San Francisco CA
    Posts
    532
    That wiring gives me anxiety
    Jumping: maneuver and pray it won't break.

  15. #15
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    Finally got the chassis for this build...

    Untitled by Scott O, on Flickr
    Submarine Qualified, Chief Inducted, Navy Retired

  16. #16
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    If you have ever wondered what an almost naked TRX6 looks like, here it is...

    Untitled by Scott O, on Flickr

    The last steps in the tear-down will be two replace the wheel well shock towers and replace them with aluminum towers, which are scheduled to arrive sometime next week. I will also get rid of the diff-lock servos, but I think I'll keep the two speed, the DX6e should have an extra channel or two on the chassis side of the house. Unless something changes my mind, I will more than likely use the XL5 in crawler mode. I will be using one of Castle's 20A BECs for power.

    After the shock towers go on the wheels will come off and fabrication of parts and pieces will begin. I will build it starting from the cab, and working my way back. I am still undecided on what I am going to do for the back of it, flat bed or semi 5th wheel hitch; might make the system modular so I can go either way fairly easily.

    I will certainly need to do some work to the suspension to accommodate the weight. My guess right now is that the whole rig completed with top the scales at around 20 pounds. I'll likely put limiters in the shocks, giving them about 50% movement, and the preload will be all of the way down. When I am putting the limiters in, I'll put 60wt oil in to control sway.

    Right now I am not planning on putting outriggers on, because that is a whole new bag of cats to deal with, but I need to see how well the chassis behaves when the crane is operational.
    Last edited by Greatscott; 01-09-2021 at 09:10 PM.
    Submarine Qualified, Chief Inducted, Navy Retired

  17. #17
    RC Racer
    Join Date
    Jan 2020
    Location
    The Moon
    Posts
    162
    Are you gonna upgrade the motor because the car is gonna be so much heavier?

  18. #18
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    Given that I really have no plans of crawling with the thing, and mild off road conditions is really all it should see, I am planning on using the stock motor. I will likely gear it down a little to help it out with the weight.
    Submarine Qualified, Chief Inducted, Navy Retired

  19. #19
    RC Enthusiast
    Join Date
    Jan 2021
    Posts
    25
    I want to mod my trx-4 so bad for a custom body and stuff but I am a 15 year old with no patients and If I took it apart and did mods and it broke my parents definitely would not let me spend my money on replacement parts. Note(they already weren't happy I spent my money on a trx-4 even though they didn't mind me buying a slash. also I love what you are doing here mate, Looks amazing!!!

  20. #20
    RC Turnbuckle Jr. Greatscott's Avatar
    Join Date
    Mar 2004
    Location
    N. Idaho... Da Sticks!
    Posts
    8,142
    Quote Originally Posted by 2023Leftylp View Post
    I want to mod my trx-4 so bad for a custom body and stuff but I am a 15 year old with no patients and If I took it apart and did mods and it broke my parents definitely would not let me spend my money on replacement parts. Note(they already weren't happy I spent my money on a trx-4 even though they didn't mind me buying a slash. also I love what you are doing here mate, Looks amazing!!!
    You just have to know how to talk to them. Tell them you are interested in becoming an engineer, and taking your RCs apart and putting them back together helps you understand how they are designed and how the work.
    Submarine Qualified, Chief Inducted, Navy Retired

  21. #21
    RC Enthusiast
    Join Date
    Jan 2021
    Posts
    25
    thats the thing... thats what my dad wants me to be but I go to vo-tech for art, but I do love taking everything apart

  22. #22
    RC Turnbuckle Jr. Squeegie's Avatar
    Join Date
    Jun 2014
    Location
    San Gabriel, California
    Posts
    8,562
    Quote Originally Posted by Greatscott View Post
    Untitled by Scott O, on Flickr

    Untitled by Scott O, on Flickr

    Untitled by Scott O, on Flickr
    Hmmm...




    Looks great so far... Keep it up!
    Creativity is intelligence having fun. -Einstein

Posting Permissions

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