[109jb]

Ah fair enough. No, I haven't done anything like that. I don't think it will be a big issue though, as long as the gearing is well dimensioned.
Get a board, and try it ;D

Are boards available and if so, where and how much do they cost?

[macdowswe]

Are boards available and if so, where and how much do they cost?

I will be facilitating a couple of production runs at different stages of maturity of the project. I expect that the early prototypes will be around $100, and with a larger run later on will be closer to $50. You can check out the details, and sign up for a board at any stage, here: https://hackaday.io/project/11583-od...nd-development