Quote:
Originally Posted by CalTran
You might not necessarily even have to buy a pair of supershifters if you're seriously interested in designing your own. I must preface this with this suggestion only working if you have some previous designs of your own and are looking for some advice. If you've made some solid progress and research, you can "accelerate" your design process by buying one supershifter, taking it apart, putting it back together, taking it apart again, cadding each piece (yes this includes making CAD of gears), assembling it in your CAD package, then transferring what you've learned to your own design. It will probably end up looking somewhat similar to a supershifter, but you can make design changes along the way. This is what a lot of teams, us included, do for developing Swerve drive, but it transfers across to anything that can be bought COTs.
In short, don't reinvent the wheel when you can buy it and give it a paint job and some new rims.
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AM publishes CADs of the supershifter, so using those cads is probably a more ecenomical solution. Also if you have to use custom, using supershifter design isn't the best. It has an extra reduction that isn't needed as long as you use smaller wheels(which you should do anyways). For completely custom the 973 CAD is probably your best bet. Again, at this point in time, you really should either bite the bullet and buy supershifters or settle for single speed. Unless you work VERY, VERY hard to get a drivetrain prototyped before season, you run the very high risk of not moving. There are a lot of things that you will not learn unless you go through prototyping a custom drivetrain. Currently, I think the time could be better spent to prepare for the build season in other ways(training members, stocking up, etc.).