Miha2548's "Challenger-2" Technic Offroader 4x4

[DLuders]

Miha2548 has designed a Technic Offroader 4x4 that has fantastic low-gear climbing abilities and a clever winch: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=435669 . He describes it as a "LEGO Technic trial-truck 4x4 with winch and 2-speed gearbox. dependent suspension on front and rear, opening hood....Perfect trial-truck....Powered by 1 PF XL; M-motor is in steering.....Winch...is connected with a drive motor. Winch with a ratchet. This thing is very usable and reliable." There are photo-sequence front axle building instructions, and a parts list for that.

[Burf2000]

Very cool

[darksheep]

Does any one know how his gear box works? i need to do one for a rock crawler i am buildig so when it is driving on flat smooth road it is not very slow .

Thanks for the help :)

[DLuders]

There may be clues about the 2-speed gearbox in Miha2548's photographs of other Trial Truck MOCs, specifically this one: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=418446 . Recommend that you surf "UP" and down all of his Brickshelf folders for clues .

[DLuders]

Miha2548 has posted additional videos of his "Challenger 2" MOC:

Indoor Trial:

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Outdoor Trial:

[Silcantar]

A 2-speed auto gearbox is pretty simple. He may have used a modified version of one of these.