Gearbox design with different sync-gears

[aczkasow]

Hi everyone!

This is my first attempt to build a gearbox. Being a newbie I have noted there are only one type of gear which could be coupled with a driving ring. So I decided to find a workaround for this issue (I bet i've seen this idea on this forum).

The idea is to use two not connected half-axels with a driving ring in the middle, the synchroniser’s home axle syncs standard synchro-gear, while the floating half-axel uses any other gear and could be coupled with a synchroniser with help of a standard bush (which has notches on one side to couple).

- There are some cons to that approach: half axels have to be precisely aligned.

- Sometimes it is impossible to switch the gear when motor is turned off.

What do you think?

[Paul Boratko]

I played around with an idea similar to this a few years ago and it is just too unstable to be consistently reliable... Also, one of the keys I've found to building a really great working gearbox concept is keeping everything uniform using Liftarms rather than perpendicular connectors on axles because they have a tendency to move around and cause gear bind ups, plus they are not "true" to the spacing in which the gears work the best...

[aczkasow]

I am yet to figure out how could I create half-stud displacement with studless liftarms, that's the reason why I decided to use axles and perpendicular connectors. Still have issues wuth basic connections (like: how to create a studless cage with 8 liftarms?).