pic: Introducing BarBox: My First Attempt at Gearbox Design

[bardd]

Originally Posted by HammadB

While I don't know which gears you're using specifically and thus their bore sizes, maybe try a smaller gear size on the second stage. You could obtain the same reduction using AM 14 and 28 tooths etc and make the box more compact and a tad lighter.

I couldn't find a gear combination that can use smaller gears without altering the ratio too much. Unfortunately 14 to 28 can't work, both because in that case the output shaft will intersect the 50T gear on the first stage, and because there's no 28T with 0.5" hex bore. There is a 29T one, but still too small.

Originally Posted by magnets

I can't tell from the image, but it looks like the CIM is held on by two screws. It's a better idea to make the top of the CIM flush with the plate, and cut a 0.75" hole in the plate for the top of the CIM to sit in.

The hole exists. You can't see it in the picture though.

Originally Posted by KrazyCarl92

From an interchangeable part standpoint, why not have the hole for the CIM shaft/boss in the side plate be on both side plates? This way, you can make 2 of the same part per gearbox and have more flexibility if you need to replace anything.

The output shaft sits on two different bearing sizes (0.875" in the back and 1.125" in the front), so the front and back plates have different holes for the bearings too.



Most of you recommended standoffs, I'm going to try that. I'll try and make holes in the plates too. Christ- ehh... Open profile version will be coming early.