Search
Forum
Wiki
Images
Files
Member List
Help
08-22-2022, 09:30 AM
I'm particularly proud of the wheels (on both droids). I showed a cross section of the current design earlier. A 3D-printed TPU "tube" supports the weight of the droid since the Lego tire would collapse. It provides a good roll. This is the 3rd generation wheel for MCK-Y, and we started with that for the MAW-1 droid.
The Lego wheel had to be adapted to fit the RC axle. Here's an exploded view of the connection:
There's an adapter on the left, that's screwed in like normal (and a little tool underneath the nut to help attach it).
A small spacer helps keep it from backing off.
The wheel then sits on top of the 3D printed technic pins. However, due to the vagrancies of 3D printing and the torque of the RC drivetrain, it's screwed in with a triangular washer deep into the 3D printed adapter.
There's another tool beneath the tire to help remove the wheel from the hub adapter.
A Lego "hubcap" is glued to a bit of the axle so it can cover the end of the wheel.
The other wheel is similar, the front and rear are different sizes and the adapters are slightly different.
The other purpose of the adapter is as a spacer to get the wheelbase correct for the model.
MCK-Y has run for years on this system. Sometimes we've had to replace a hub, and there have been minor tweaks along the way. The recipient was given a few extra printed parts, but probably won't need them.
![[Image: normal_Lego_Mouse_Droid_Wheels_28329_281920x128129.jpg]](http://www.rebeldroids.net/gallery/albums/userpics/10017/normal_Lego_Mouse_Droid_Wheels_28329_281920x128129.jpg)
The Lego wheel had to be adapted to fit the RC axle. Here's an exploded view of the connection:
![[Image: normal_Mouse_Droid_Exploded_Wheel_Connection.jpg]](http://www.rebeldroids.net/gallery/albums/userpics/10017/normal_Mouse_Droid_Exploded_Wheel_Connection.jpg)
There's an adapter on the left, that's screwed in like normal (and a little tool underneath the nut to help attach it).
A small spacer helps keep it from backing off.
The wheel then sits on top of the 3D printed technic pins. However, due to the vagrancies of 3D printing and the torque of the RC drivetrain, it's screwed in with a triangular washer deep into the 3D printed adapter.
There's another tool beneath the tire to help remove the wheel from the hub adapter.
A Lego "hubcap" is glued to a bit of the axle so it can cover the end of the wheel.
The other wheel is similar, the front and rear are different sizes and the adapters are slightly different.
The other purpose of the adapter is as a spacer to get the wheelbase correct for the model.
MCK-Y has run for years on this system. Sometimes we've had to replace a hub, and there have been minor tweaks along the way. The recipient was given a few extra printed parts, but probably won't need them.