Incorporating the vex ball shifter into a WCD Drive

[Nemo]

I'm picturing a wider custom version of the 3rd stage add-on that Vex sells. Put your two sprockets inside and change the 3rd stage ratio to be appropriate for direct drive. Sounds like a fun winter break project.

[Brian Selle]

If you are able to remove the hex output shaft pressed into the ball shifter shaft and replace it with your own, you could just add some pulleys/sprockets and a couple standoffs like the attached picture. The picture shown has 30 tooth pulleys and the clearance with the 4 standoffs is close... to get more clearance with smaller pulleys/sprockets you could rotate the entire gearbox slightly about the output shaft and use the 2 standoffs in the upper left/lower right corners (2nd picture). Would be good to work in some more support for the cantilevered gearbox.

[JB]

Originally Posted by AdamHeard

We will post a rough draft of our "Vexpro WCD" before the end of the weekend, and maybe follow up with a more refined setup before ship.

We are also heavily tempted by the WCP gearboxes. They are an iteration of our custom gearbox design, so they'd likely be a good fit into our designs.

I CANNOT WAIT TO SEE THIS.

We are thinking about doing this with belts and just using the 1x3 as the mount plate for the third stage with larger standoffs. Which would allow for the pulleys to be contained in the 3rd stage of the gearbox.

[James Tonthat]

I made this yesterday, but I think we might be pursuing a different option at this time.

The ratio on this is

12:50 1st Stage - CIMs
14:50 1st Stage - Versaplanet 4:1 (I like just putting it in on the plate just to have the option.)

50:44 High
34:60 Low

30:40 3rd Stage

Edit: Probably should have added another view to be more descriptive.