Finally finished my body for the UTB18. It's nice to have something Hobby grade that's not too big or small. Used TPU alongside PETG and PLA this time. Just waiting on a sunny day so i can do the detailing and weathering on the body. I might buy some bigger wheels and tires too, but I'm not sure where to look. Thanks for checking out my post!
Progress on my custom UTB18 body. Replaced the stock springs with some extra Injora springs I had for my SCX10.3. I might redesign the back cap that holds the power switch and covers the electronics basket eventually, it looks a bit out of place to me. I also chose not to add the light bar it usually has, that thing is SO bright and it runs hot. Other than that, I'm just waiting on some more greeble to print and a set of wheels to come in the mail. Then, I'll probably weather it and call it good!
Would love feedback on a video I just published! Youtube video about the truck
I spent a few months designing the rolloff hook mechanism. There's different dumpsters or even a gridfinity adapter to pickup and deliver gridfinity bins.
I’ve been designing and building a large scale RC car for the last while. The idea was to be a 1:4 scale Ford GT40, but bodywork is a long ways off.
The wheels aren’t aligned as the car is powered down, and the servos don’t hold position like this.
Anyway - four wheel steering, four wheel drive. CV joints for all power transmission points, mechanical plate torque limiting clutches, and running 1:1 gearing from the 270kv motors electric longboard motors. Running 4 4S lipo packs in series/parallel, so it’s 8S voltage and decent running times. I’m not printing _everything_, just everything I can. I did make the wheels - printed the wheel and cast urethane to them. Probably a bad choice, as they are the second heaviest part of the car at ~11 lbs total. (Yes, the motors are heavier!)
Recently switched to ESCape32 based ESC’s, which have been great. Planning on intercepting transmitter controls at some point with a Rpi5 and some rp2040s so I can do proportional steering based on speed, etc.
The reason I’m doing the combined battery packs is to have the voltage the same for each motor. Probably going to redesign this once I have the design finalized (ha!) with proper bus bars and a 21700 DIY pack. The motors support up to 48v, so I’m probably going to try to hit that at some point.
If folks want, all my design is in onshape, but I’ll warn the docs are a bit of a mess. When I get to my final (ha!) design, I’ll clean it all up. I am using sendcutsend for metal reinforcements for the parts that can’t handle the torque of the motors.