ATTENTION - WORK IN PROGRESS!

Update 2022-06-25: Rod end on drawbar (v27)

RC Trailer in 1/10 scale - customizable

Specs

• Will fit an 1/10 scale EP touring car, HK's Swamp Dawg, maybe other vehicles, too
• Can be built with tilting ramps or tilting loading area
• Reuses a lot of Tamiya TT-02 parts that I (and I guess many of you, too) had lying around

Demo

• Video showing test-tilting loading area: https://youtu.be/BYu77owrZVU (trailer unfinished, f.e. wings missing)
• Video showing test-tilting ramps: https://youtu.be/6cjt5jvuBSk
• Video showing trailers in action:
• Tilting ramps: https://youtu.be/lD9vFc0cq1Y
• Tilting loading area: https://youtu.be/HWApYGT20rU

What to print

Trailer with suspension and tilting ramps

• 2 * Arm L
• 2 * Arm R
• 2 * Frame
• 2 * Struts with holes
• 1 * Front Struts
• 1 * Triangle
• 1 * Drawbar
• 1 * Ramp
• 2 * Abutment
• 2 * Wings[1]
• 0-8 Eyelets

Trailer with suspension and tilting loading area

• 2 * Arm L
• 2 * Arm R
• 2 * Frame
• 2 * Struts
• 1 * Front Struts (with servo mount)
• 1 * Triangle
• 1 * Drawbar
• 2 * Hinges
• 2 * Wings[1]
• 0-8 Eyelets

Trailer without suspension and fixed loading area

• 2 * Frame for no suspension
• 2 * Struts with holes
• 1 * Front Struts
• 1 * Triangle
• 1 * Drawbar
• 2 * Wings[1]
• 0-8 Eyelets

Needs these additional parts for trailer with suspension

• Rims+Tyres
• Wheel hexes and pins (maybe print this hexes: https://www.thingiverse.com/thing:3677390 )
• a bunch of M3 screws
• 4 Wheel axles, like TT-02B's N2 or TT-02's C3 (Tamiya #19115153/1)
• 8 Plastic bearings, like TT-02B's BB2 or TT-02's BB3 (Tamiya #10555015)
• 8 Step screws, like TT-02's MB4 or TT-02B's MB3 (for shocks) (Tamiya #50582)
• 4 Screw pins, like TT-02's MB5 or TT-02B's MB1 (for arms) (Tamiya #19805573 or #19805755 (the latter is shorter and fits best))
• 4 Friction shocks, like TT-02 (Tamiya #51528) with kit springs (Tamiya #19805699)
• I used the softest springs I could find in my parts drawer: PMM racing dark green, but the stock ones are just fine
• Standard-size servo if you want to make a tiliting loading area, like MG995 (cheap and strong :) )

Needs these additional parts for trailer without suspension

• Rims+Tyres
• Wheel hexes and pins (maybe print this hexes: https://www.thingiverse.com/thing:3677390 )
• a bunch of M3 screws
• 4 Wheel axles, like TT-02B's N2 or TT-02's C3 (Tamiya #19115153/1)
• 8 Plastic bearings, like TT-02B's BB2 or TT-02's BB3 (Tamiya #10555015)
  or #19805755 (the latter is shorter and fits best))
• Standard-size servo if you want to make a tiliting loading area, like MG995 (cheap and strong :) )

Tilting ramp

• 2 * Tamiya A12 servo stay

Even more parts

• Some plywood:
• I used 420 x 200mm for the tilting loading area
• 420 x 225mm for fixed loading area
• TBD x 225mm for tilting ramps

Programming your remote

I like to use a FlySky GT3B or, even better, GT3C for controlling crawlers.
I flash them to get 6 or 8 channels and many cool options (slower like servo speed) out of it. Learn here how to do it: https://www.rockcrawler.de/thread/10395-flysky-gt3b-3-kanal-pistolenfernsteuerung-umbaubericht-auf-6-8-kanal-diskussione/

After flashing the remote and binding, I use this to setup the fourth channel:

• Press NAME long to set channel-count. Default is 3, I set it to 6 since I use a 6-channel receiver
• I used the CH3-Button on the handle, set it up with pressing REV long, enable "C" and choose channel, set MO (momentary)
• Since servos are much tooo fast to look scale, I love slowing them down by pressing D/R long, choose the channel and reduce it to 20%

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[1] https://en.wikipedia.org/wiki/Wing_(vehicle)