This will work with both Truck V1 and truck V2
Telescope driveshaft to go along with the helical gearbox. Input for 4mm shaft at either side, screw the joints together with 3mm grubscrews. 4mm long ones will work but 6-8mm is probably better.
You can see a demo of the complete truck here:
Edit 2016-03-12: Added U-joint1_PIN.stl, this is the same as U-joint1 but with a 1.5mm hole for a through-pin instead of grubscrews, this seems to work better on the output shaft from the gearbox. Requires drilling through the metal shaft so it's a bit more work.
Edit 2016-04-24: Reinforced U-joint1 and U-joint1_PIN a bit, also added a longer u-joint3b.
Check me out at:
3d hubs: https://www.3dhubs.com/malm%C3%B6/hubs/mrcrankyface
3D printing nerd and wannabe-engineer. Making random projects from RC trucks to nerf guns, interested in pretty much anything technology related.
I do youtube videos about most things I make.