Re: pic: Shifting Module for Drivetrain Concept
 

Oh, yeah, duh. Not following my own conversation... Yes that is true that my little "usually" anecdote wasn't exactly relevant. I was mostly showing that it does indeed happen fairly frequently and that it's not really a problem.

Re: pic: Shifting Module for Drivetrain Concept
 

This is a good start! I do have a few questions for you though:

-The initial stage of gearing has a relatively small face width. Did you do any calculations to determine those gears were effectively wide enough? Also, where were you going to purchase these gears from?

-Please correct me if I'm wrong, but it looks like you are going to be using a piece of alumnium channel as the gearbox housing. Using a housing like that has its pros and cons, one of the cons being unable to "open" the gearbox up. If you look at how the bearings are pressed into your housing, I think you will see there may be some issue. It will be extremely difficult, if not impossible to press bearings like that into a closed gearbox. Is this something you considered?

-The Bimba cylinder appears to be directly mounted to the dog gear. I'm sure you are familiar with AM style shifting gearboxes (as this is where that dog gear is from). Use those shifting components as a guideline for your design. That design has worked well for a long time now because it is a very rugged and robust design.


Keep working at it!

-Brando