Pneumatic Gear Shifter

[CalTran]

Originally Posted by MICHAELABICK

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.).

Fair enough but there's something about understanding a design that you can get from handling it yourself. Perhaps I'm just a hands on rather than visual person. I've downloaded the supershifter design myself and taken a look. It's just not the same.

[AdamHeard]

I agree with other's comments that SSers are the way to go.

If you have to ask the general question of , "how do we do this", you won't be able to make your own for season reliably. And you'll certainly dump more money into that than just buying shifters.

SSers are awesome guys, after running them for a while you can analyze them and work on making your own.

[Andy Brockway]

The white papers here on CD have several shifting transmissions. Fairly simple designs by Andy Baker, Dave Lavery and myself were posted before the time when AM shifters were sold. All of these were competiton tested.

Search by tag "gearbox" . If you add the tag "frc716" you will find my 2005 dual motor, dual speed. It costs about $200 in parts and can be made with non cnc equipment.