A tiny little 4 speed gearbox without reverse. I usually build compact super cars, until I manage to build a small 5+R gearbox I'll have to use this design. If you have any questions or ideas please contact me! Details: -Assuming that it's a rear wheel drive car, blue joiner should be connected to the engine and white joiner should be connected to the differential. Problems: -24 tooth gear is so big and it won't allow me to build a small frame around the gearbox. I'd like to build a 7 stud wide frame but that gear rubs the liftarms so I I have to make it 9 stud wide. -Engine and wheel connections are not centered so I have to use extra gears to line them. Even though they function pretty good, this means more friction. I could place the gearbox one stud to the left (or right) but then it's not symmetrical, it kills me! Contact: http://legoadam.turklug.com/iletisim.html Links: http://brickforge.de/software/brickstore/ - you need Brickstore to view the .bsx (inventory) file. http://www.leocad.org/ - you need LeoCAD to view the .lcd file Warning: -This design has been used by Erik Leppen* and Sariel** before. Please see their folders too. * http://www.brickshelf.com/cgi-bin/gallery.cgi?m=ErikLeppen ** http://www.brickshelf.com/cgi-bin/gallery.cgi?m=Sariel