Phaser g-boxx style middrive

[crossbreak]

So 2 sprokets driving the same chain...... would be reaaaally nice to see these 2 big BB sprockets contra-rotating in action.....

Thx!

This is not just like the panasonic patent. this jackshaft sits coaxial to the cranks! Thats' the invention here

if you own a lathe, why dont you try making it? the most complicated parts can be made this way-

 

[panurge]

Hi CB
unfortunately/luckily I'm temporarily out from any machine that is not in my house or farm....I have my 2 years old first son and the new arrive, my daughter Livia , with my wife, they need my total attention in the next time....

I have indeed a perfect test bike for this job... seems the bike you have modeled....

Regards

 

[crossbreak]

That is the exact same bike, except it is blue and has an Astro motor

The only thing that has to be done with this part, is turning the inner dia of the BB-Cup to 31mm over the whole length. This is cheap, one does not need to own a lathe for this, it can be machined elsewhere.

Here is a pic that shows how things come together for the BottomBracket-coaxial-jackshaft on the right side, as used in the last design.

I'll continue my next build using this last design: http://endless-sphere.com/forums/viewtopic.php?f=28&t=46813&start=60#p697901