Okay, here we go again, take a close look at this one because some small improvements have been made. The bevel gears are actually part of the structure. You will find that construction will be a little harder than the rest of mine because of this fact. However, if you remove the outside 3 length liftarms (part?) you will find that this one fits snugly into 6 studs (okay, not so snugly but it fits). The *.dat is here
I made the bevel gears green because I thought that it would help in emphasizing the importance of them.