Hey all! So one of the many complaints of the 3" Flex wheels is the fact that when put onto the VersaHubs, almost all of the flex is gone. So I have created an adapter that would ideally hold the wheel on firm, but still allow for a decent amount of flex.
It is designed to use 2 lockbars, one on top and one on the bottom, that would screw in to the holes as shown. I used metal lockbars for this, but you can also use the plastic ones.
The holes for the lockbar also match up with the holes on a gear or sprocket, as shown with a 12 tooth sprocket below. This can allow you to connect a sprocket or gear directly to the adapter.
I would recommend using standoffs to hold the wheel onto the adapter- the assembly (without the wheel) is shown below:
The standoffs would go into the holes on the wheels, with a screw and a steel washer to hold them in.
This was all designed in Fusion 360.
Note: For these images, I used a generic white plastic so that it would show up better. You would probably want to cut them out of lexan.
Thoughts, suggestions, and (constructive) criticisms are welcome! And stay tuned! A 3D-Printable one for VEXU may be on the way!
I have not created one of these, and do not really intend to, but I would love to see if anyone does, and tell me how it works out!
(I am not sure how to import a .step file into this as of right now, if someone would like to help me with that, that would be appreciated)
Edit: .step file below.
Yeah, I may make an alternate version using those soon, I actually have those in my Fusion 360 Cad library. I didn’t do it with this one, though, because I really don’t see much need for a HS shaft for this. Thanks though!
cool part, we use something like this on our robot currently. One question, did you ever consider making it in a more triangular shape to improve strength and/or increasing the amount of plastic around the outer screw holes?
I considered that, but I decided against that. I figured that the standoffs going through the wheel should strengthen it. I didn’t want to put too much around the outside of the screws, as I figured that it would decrease the flex. A triangular one would be easier to cut out by hand, though.
looks amazing but before we had gotten our adapters in we had used a 12 tooth gear with tank tread around it and put it in the center whole and there was no way that it was going to come out
