The "55-tooth question" has already been answered in two other threads (
here and
here). Please search before you post.
Please make sure that you have the correct URL. The correct link to the white paper is
http://www.team116.org/2004/Transmis...riptionV6a.zip. Other development versions are out there, so make sure you are linking correctly.
As noted in the original white paper description, this design is intentionally an "unfinished work." It is intended to provide a basic shifting solution for those teams that want to take on that challenge, but may not have very sophisticated manufacturing capabilities or experienced machinists. If you have greater capabilities, there are a LOT of improvements that can be made to this basic design (ranging from significantly lightening the gears to reducing the face widths to using multiple pitch values for the cascading gears to minimizing the plate widths to ...). We KNOW there is a lot of room for improvement - it is SUPPOSED to be that way. The intent is that teams will improve upon it and post their improvements and thereby increase the overall knowledge/experience of the whole FIRST community, while maintaining the design as one that can be built with minimal manufacturing capabilities. So far, we know that at least 12 other teams have built this design (and there may be several more we cannot confirm). But so far, none of them has "gone public" with any modifications/upgrades they may have made. We are waiting to see who has taken the idea to the "next step."
-dave