A little help needed please

[rjk1977]

I'm started to build a pick-up truck , i like it to be 2x4 and shifted to 4x4 . Now i need a gearbox that in 2x4 mode the front wheels are not powered and just run along.

i tried some ideas , but i think i'm thinking too difficult.

many thanx

[efferman]

16 tooth clutch gear and a driving ring?

[allanp]

Try this:

You don't really need the second driving ring, that's just if you also want the option of locking the central diff.

Hope this helps.

[rjk1977]

@ allenp

thanx this looks great , only thing i have to shop at bricklink for this type of diff. And i think i will use the diff.lock aswell

edit: whahaha found one , just start to build again

Edited March 13, 2011 by rjk1977

[allanp]

That's great, glad I could help

Edit: I wish I had looked at your brickshelf page sooner as I would have noticed that you have one of those diffs in your tow truck!

Edited March 13, 2011 by allanp

[rjk1977]

I build it it works great, havent tried it motorized though.

couldnt stop myself to post a pic of the car already. its far from finished but anyway:tongue:

http://www.brickshel...ry.cgi?f=466354

OOOH and i used Sariel's heavyduty gearbog ,its great aswell ,thanx Sariel

Edited March 17, 2011 by rjk1977

[allanp]

I build it it works great, havent tried it motorized though.

couldnt stop myself to post a pic of the car already. its far from finished but anyway:tongue:

http://www.brickshel...ry.cgi?f=466354

OOOH and i used Sariel's heavyduty gearbog ,its great aswell ,thanx Sariel

Looks nice and big so far, nice one.

Just one concern tho so far, please don't think i'm knitpicking but I fear those two 8 tooth gears driving the diff are gonna a weak point given the huge power coming from two XL motors and Sariels very strong gearbox.