That is a genius idea , on addition to it , get some weight and put on the front wheel so that it will be effective. The front wheel has traction and energy , it only needs some weight

Wonderful ideas,only need to fit off-road tyres and again to check the ground clearance to avoid the bike being trapped underneath.

The minds of the world are busy with some kind of nonsense, but this guy invented it from scratch and made it from old spare parts, delight!!!

The drive system will not allow driving on asphalt, as I understand it, there is no way to disable all-wheel drive, and without this the cardan shafts will fly apart very soon, it will be impossible to turn around or turn on hard surfaces

Hard case man ..line up the yokes on the drive shafts when you make them up( have a look at a cars drive shaft ).will run smoother

The added weight and friction will require the engine to work harder, more power can be obtained by adding a twin squirrel gerbil charger. In the past i have had significant problems fording this engine boost system.

This is a smart idea if you are going on a muddy hill by replacing the gear wheel, but if you are on a flat road it doesn't matter, because I see the rotation of the rear wheel and the front wheel are not the same, so the front one just follows the rear wheel