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Originally Posted by Ryan Foley
design it as simple as you can, it makes it easier to fix.
If it is complex, try to design it so you can repair it easily, or have spare trannies made, so that a tranny repair wont take you hours.
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This is absolutely true. Ideally, having a transmission that is modular is the way to go. In addition, in my humble opinion, your transmission shouldn't have reductions on the order of 1:50 and 1:20 for instance, they should be just an initial step, of say 1:1 and 1:3 so that if for some reason the whole thing explodes, you can just pull it out, move a motor and be at that 1:1 ratio, which is something on the order of magnitude that your robot will move.
Secondly, having a tranmsission that you can easily modify is very ideal. For example: don't weld gears to shafts! If something strips or breaks, you'll have to replace the entire shaft. Bad news, especially if there are multiple gears on the same shaft! Not only obnoxious, but time consuming and expensive.
Matt