MK2 mini RC tank for N20 motors, lego tracks

thingiverse

Hi, take a look at my other designs https://www.thingiverse.com/BuiltBrokenGlued/designs Remixed from https://www.thingiverse.com/Mkhand_Industries. This is my MK2 version of the tank, with longer and wider dimensions to accommodate the 1400mah 3s battery inside the tank. See https://www.thingiverse.com/thing:2983695 --- Order: Idea Remix Description Process build --- Idea: I have always wanted to create a Tiny tank, but I planned on using 1400mah 3s batteries that I had lying around. I usually crash my quad copter (more practice is required), and I wanted something else to use the batteries up as well as get into FPV at some point. The base for the tank uses Lego Technic 30cm tracks along with 1x 1400mah battery. This requires 12v N20 motors x 2 and ESC suitable for 3s LiPo. I am hoping that the small motors will result in low current draw, and the cooling system won't heat up the PLA around the motors. --- Remix: I wanted a tank design, so I remixed the design by https://www.thingiverse.com/Mkhand_Industries. I removed the tank tracks and made the turret support a little higher to allow the battery to fit underneath a removable lid. The Turret has been increased in scale from the original file. The inside has been hollowed out to allow a Flysky receiver, battery, and 2x ESC (NOT TESTED). --- Description: I have tested this platform on my previous tank (See link at the top). The motors being 1200 rpm are great for speed and are okay but trapped grass in the tracks stops the tank. I will be looking for some 300 rpm motors for off-road use. The design is compact and could be made quite a bit smaller with a smaller battery and using a standard square box body. This is something I will do at a later date. Previous model description: I hooked up a 1400mah battery and drove this home from my local park around 500-600 meters with no heat issues affecting the PLA print. I have used this around the house quite a bit with the camera, and it works well. The turret does not turn yet. https://youtu.be/aqVu5qaTH8I I have printed the turret to include a cheap VTX camera and a 9g servo for side-to-side movement. I haven't tried the servo yet. The cut-out should rotate enough to allow a good range of movement for the turret, allowing the cable to come straight through the top plate. --- Process: 2 x N20_Front_drive_wheel.stl - These are super glued onto the N20 motors 1 x Chassis_Base_MG_Tank_N20_MK2 - The N20 motors with wheels are super glued in. 2 x Rear_608s_bearing_idle_wheel.stl - These are super glued onto 608RS bearings. The bearing is then attached to the tank using a short M6 hex set that can be glued into the holder at the rear. A spacer is used in the bearing to allow an M6 nut to hold it together 1 x Upper chassis MG Tank N20 MK2.stl - Since the last tank, I have some 5 x 3mm magnets that are mounted and glued into the upper chassis. There are 2 at the rear and 2 hidden at the front. Ensure the magnets are all mounted the same direction. 1 x Top plate MG Tank N20 Mk2.stl - This is glued to the Upper Chassis once the magnets are fitted 1 x Turret Rear MG Tank N20.stl - This houses the 9g servo that allows the turret to move from left to right. The entry hole for the servo may need a little trimming. I hot-glued this in due to the print not holding the servo tight enough. You will have to trim the servo screw holes so they don't come out the side of the turret (I haven't done this pictured do to the print not being finished) 1 x Turret Front MG Tank N20.stl - This houses the VTX camera. It is hot-glued in place. Once done, the front and rear Turret can then be glued together. NOT PRINTED YET 1 x Guns MG Tank N20.stl - These are printed together using a 2mm brace that gets cut off after --- If you have any questions, please ask. I'm open to improvement.