Hey yall, I have to do a science project for my school (junior in high school) and im an avid bike mehanic and recreational road biker. To be honest im a better mechanic then i am a rider haha, and recently while looking at the newest innovations in the bike world i stumbled upon shimanos patent for hydraulic shifting but the mechanism was inefficient and poorly designed. I can strip a bike down and build it back up, ive restored countless old bikes, and i just recently built my own frame, so i figured id have a crack at this hydraulic shifting business. After a lot of designing and finding of various parts (its nearly impossible to find cylinders that small) i think i have a pretty good prototype, it uses a master piston and hydraulic multiplication to move smaller slave pistons. I originally used steel but it was too heavy so i just bought some aluminum to use. It also uses pivot arms and one double action piston per derailleur. With the aluminum it should be a bit lighter than your average shifter apparatus (those cables and housings add up after a while compared to the hydraulic hosing) and i found its much more efficient, not too mention its frictionless and much more rugged. Its got a lot of work till its finished cause getting the actual shifter to index and do it right is a bit tricky, but i think its going to have a lot of potential when its done. Ill post pics eventually but its pretty fugly looking right now, not to mention the rear derailleur is basially a hacked up shimano altus derailleur (ill make my own eventually). Just wondering everyones thoughts on the project and hydraulic shifting in general, any comments would be apprecated!
-Thanks yall sincerely John