31058 Triple Transformer




Here is my 31058 Triple Transformer, my second alternate for 31058!

It features three modes--a robot, a plane, and a frog. The frog mode is a little fragile in some places, but the robot and plane modes hold themselves together pretty well.

Robot mode features:
     Moving arms
     Moving legs
     Moving head
     Can pose in almost any position and won't fall over

Plane mode features:
     Moving wings (up and down, or you tilt them forwards)
     Tail fins
     Back engines with glowing "fire."

Frog mode features:
      Moving front and back legs
      Moving head

I tried to include lots of pictures of the transformation process, but just to make sure it's clear I have made a list of the steps starting from plane mode, which is the mode the instructions build it in:

From plane mode to robot mode:
     1. Fold down the legs
     2. Push the bar that holds the tail fins as far forward (towards the front of the plane) as possible
     3. Stand the robot up
     4. Turn the hands (tips of wings) right-side up
     5. Unfold the robot's head
     6. Fold the tail fins behind the robot's head

To switch back to plane mode, just follow the steps in reverse order.

From plane mode to frog mode:
     1. Flip the whole plane upside down. What was the back of the plane is now the head of the frog
     2. Hinge the tail fins down so they are now the frog's front legs
     3. Flip the wings so that the smooth green parts are facing upwards
     4. Hinge the wings from the middle joint down
     5. Take the tips of the wings and fold them so the side right-side up on the ground and face outward. These are the feet.

For the best result, please have the pictures handy when you transform between modes for the first couple of times. I had a lot of fun building this MOC, and I hope you will too!

If you enjoy seeing my work and download a lot of my building instructions, I would appreciate donations of any amount to paypal.me/Turbo8702. Thanks!
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Name 31058 Triple Transformer
Designer Turbo8702
Designed 2018
Inventory 140
Theme Creator > Model > Creature
Alternate Build of 31058-1 Mighty Dinosaurs
Star Wars™ Imperial Star Destroyer™


  • 4 months, 1 week ago Nathan (64K) Site Admin ADMIN
    Your instructions link doesn't seem to work anymore, can you please fix it.
    • 4 months ago Turbo8702 (84K) MOC Designer PRO
      Yeah I will fix it as soon as possible
    • 3 months, 4 weeks ago Turbo8702 (84K) MOC Designer PRO
      Should be fixed now, if not try searching for this moc on bricklink and the instructions can be accessed that way
  • 5 months, 3 weeks ago legomaster55 (70)
    i got confused on the tail fins when building this moc i  couldn't figure out how to attach them to the model
  • 11 months, 1 week ago Lids (39)
    Шикарно! еще и трансформируеца класный самолет,прикольный робот!
  • 1 year, 1 month ago poo699 (2K)
    Nice moc good use of this set thanks for sharing
  • 1 year, 4 months ago Frank_van_der_Most (3K) MOC Designer
    AWESOME. The best alternate build for the this set so far!! Very good idea and well executed!! Putting all those (ball) hinges to good use!
  • 1 year, 4 months ago Renaissance (3K) MOC Designer
    It looks great! That's very impressive you managed to make a triple transformer with this set. Even a double transformer is very hard to make. I'm going to build it!
    • 1 year, 4 months ago Turbo8702 (84K) MOC Designer PRO
      Thank you! I hope you will enjoy it.
      • 1 year, 4 months ago Renaissance (3K) MOC Designer
        Ok I made it! It was a lot of fun to build and looks great in all 3 forms. I recommend it to anyone who has this set. Here some pics: https://imgur.com/a/jjXLOqs

        • 1 year, 4 months ago Turbo8702 (84K) MOC Designer PRO
          Thanks for the photos! I’m  really glad you like it!
  • 1 year, 4 months ago LegoOri (69K) MOC Designer PRO
    This is - AMAZING. I really want to ask you how you did it, but I think it's better you don't reveal professional secrets.
    I am especially amazed that you managed this with a System build, rather than Technic. I know that are a some Bionicle bricks, but you made everything fit together superbly/
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This MOC also has a 3D digital file available (eg LDD, MPD, etc): 3D Model

Submitted by Eccentomo Aug. 7, 2019
Frog mode. Ribbit.
Submitted by Eccentomo Aug. 7, 2019
Robot mode.
Submitted by Eccentomo Aug. 7, 2019
Plane mode.
Submitted by Weridyy1 Jan. 3, 2019
Submitted by LegoOri PRO Aug. 22, 2018
Held by my proud 6-year-old, after building it all by himself . Thanks Turbo8702!
Submitted by LegoOri PRO Aug. 22, 2018
Submitted by poo699 Aug. 19, 2018
Submitted by Renaissance June 6, 2018