First RC model - Buldozer

thingiverse

I like tanks, but as General George Smith Patton said. "When I have a choice between tank and bulldozer, I always choose a bulldozer." So the bulldozer was born. Jirka's impressive tank inspired me to create this series. Thank you for the inspiration, I'm looking forward to more contributions. I already had my favorite bulldozer with two 9g servos on Thingiverse, but I wanted the standard servos machine. I'm sure I've seen some sort of adjustment, but I couldn't find it. The original idea was to make a bit bigger so that thousands of edges from the standard servos would fit on the drive wheel. A couple of attempts and benchmarks showed 118% efficiency. A test print of the belt members revealed the need for adjustments. Extending the belt made it easier not to have to fit every item to the exact size, and adjusting the holes to hold the tie bars (stainless steel 1mm) was a must. Everything I print on REBEL is done with speed in mind, using a nozzle of 0.5mm. When I just wanted to modify the STL to bigger servos, it became so frustrating that I redrew the whole body again, and the blade, and so on..... I used Waipont servos due to their two bearings, making the adjustment easy. All I had to do was remove the potentiometer from the last wheel and throw in the locking pin and the servos to stamp the amplifier. Engine cooling is a separate chapter. I had an advantage because it was an old servo where the engine was screwed to the lower part of the gearbox, so I didn't assemble the bottom parts of the boxes. We'll see... The screws replaced the insulator on both sides. I use FlySky i6 as my control system because it's a small hand transmitter. The servos are in Channels 1 and 3. Two Mixtures 1-> 3 100% and 3 -> 1 100% are cast, and it works inside. I'll have to make some cuts and complete the switch. I ride two lions straight, and the servos and receivers still handle it, even if it's beyond their limit. The disadvantage of old servos is their temperature dependence. The center is still starting and needs trimming. I guess I'll solve this with SS regulators from China. When I verified that it was driving, I worked on the blade and its control. It's a pity that i6 doesn't have slower servos. PLA strips have sufficient adhesion on the carpet; it's just for moving on a floating floor or a line. Many parts need to be mirrored and print the other half. The parts are glued with a second medium density glue, and I use an activator. I'd be pleased to see this contribution bring more children to technique and ideally model aircraft. https://www.youtube.com/watch?v=C89iPG2vCNU https://www.youtube.com/watch?v=1P1GZkdlkIQ