Custom Gearboxes

[cadandcookies]

Originally Posted by Andrew Schreiber

So, why build your own? That sounds like a pretty cut and dry use of COTS components? For example http://www.wcproducts.net/wcp-shifter-3cim/ (scroll down to the charts for the speeds) has several options that meet your needs.

I'm not saying don't go custom, just saying that you might want to look at options and see what concepts you can steal.

As they say, steal from the best, invent the rest. I'd agree that looking at COTS options and borrowing their ratios is probably the best option for you. You might also want to be a bit more flexible with your design-- if you're designing for a certain speed and ratio, you might need to be flexible with your wheel size, for example.