Milan

Welcome, music and LDD fan!

Welcome! Great to spend quality time with your son, building!

Welcome, have fun!

Not the exact match, but pretty close:

In real life, it depends, tanks usually have back sprockets driven, engine is placed at the back. On some supporting tractor units from ww2, front sprocket wheels were driven, engine is in front of the vehicle. On half tracks, on most famous ww2 half track, SdKfz 9 2, has front sprockets driven, but those sprockets were fixed to the chassis. The buggies were suspended. On other types of halftracks, which has tracks mounted instead of tires, but they were replaceable with tires, like on ZIS trucks, there is a chain going from trucks axle, powering front sprocket, which is fixed to the whole buggie module. Regarding efficiency, powering all the sprockets would actually cause more friction, and less efficient vehicle. One powered sprocket will drive the track as good as any number of powered sprockets.

Any sprocket, one per track should be fine.

For me most fascinating, besides GBS, is his stacked tower of LEGO parts in those drawers. They must be very practical.

One solution to do it without diff, is if you use two motors to drive two tracks, and use motor as a brake for one side of the vehicle.

Noticed this, too, on my Mozilla, when clicked on my entry link, that day when voting topic was created . Now seems to work.

Wow...

Probably It means normal and long beam on headlights. Or simplified, weaker and stronger light :)

Then front tires have no function, regarding steering. The vehicle will always go in a pretty straight line whatever angle you make in front tires. In other words, it cant steer.

Zblj built this, in his BS folder.

Hey, its ok! One of my older brothers is a football crazy, too :) He loves our FC Vojvodina!

I am building one right now, but only with tracks powered. It is driving very well, but only with diff between tracks.

Actually, Milan is my name :) which means something like...a good one, nice one etc...football does not interest me at all :)

Thanks guys! Alasdair, it does have power to lift itself, but momentum is needed for 360 degree rotation on the bar, which model can't produce. Motors are just too slow or weak for that. I was thinking about that, but it would require much bigger equipment.

Oatmeal with yogurt, best ideas come when you look at oatmeal being stir with yogurt :)

x2, for alternate models :)

I did not notice anything change in Jim's avatar or some info about upgrading to moderator, but all the best to you Jim and be good as you did so far! Hope we will see many more contests and more activities around our forum :)

Hi, you too! Technic forum is now pretty active, there was contest, ended yesterday, there are plenty of nice MOCs there to check out!

Hello, and welcome!

Hello, welcome. After you check out latest treads, there are weeks of reading in older topics!

Welcome! Have fun! You are lucky man to to have woman buying you sets!

I agree. Glad to have one more MOC in the crowd :)