I just found interesting post ::

Today I would like to present a 7-speed + reverse gearbox of my design. I think that some of the solutions used in its construction, are rather unique and others can actually find them useful. Never the less I do hope you'll enjoy visiting this MOC's page. Do leave a comment, and do not hesitate to ask questions.

http://www.mocpages.com/moc.php/210670

Awesome work mate can't wait to see the complete build with the gear box installed.

Have you made a diff for the model yet? are you doing a locked diff or open ? solid axle or independent rear?

I'm very excited about this even though I don't do Technic.

Keep us posted please.

more info and LDD in this old thread

http://www.eurobricks.com/forum/index.php?showtopic=43992&st=0&p=772662&fromsearch=1entry772662

Awesome work mate can't wait to see the complete build with the gear box installed.

Have you made a diff for the model yet? are you doing a locked diff or open ? solid axle or independent rear?

I'm very excited about this even though I don't do Technic.

Keep us posted please.

Sorry for misunderstanding. This is not my work, I just post description and link for original MOC pages.

Edited May 4, 201113 yr by scj