how are electrical motors going to hold up, when they get completely submerged under water and/r caked with dirt, that is a few inches thick? how is the "heat" generated from the electrical motor, going to hold up in those type of situations?
you really can not put a fan on the motor, and/or rely on "wind" of just going 30 to 70 MPH through the field to cool the motors.
any sort of internal fan. that requires any sort of *its on tip of my tongue*.. baffles and air ducts. to keep rain water and like out, and your risking flooding the motor, when ya go through any sort of mud puddle found in fields, and other nasty areas.
if a heat sink, was placed on a electrical motor, to help reduce heat. you are still at risk of mud build up. and reducing how much can be removed.
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hyd motors, the hyd oil itself, can be cooled at a different location than were the hyd motor is. and in that help keep the "temperature" at the hyd motor down.
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ya a blanket statement comment, of not wanting to submerge anything into any sort of water, or get mud build up on things. but if that is the case, ya sitting in the shed not doing squat.
a train, the wheels do not go through mud or snow, well i am sure they do, but once snow gets to a certain point, i would imagine snow plows get added to the front of the trains. to keep all the wheels on the track.
electrical cars / trucks. i really can not bight into, at least everything that i have seen so far, is made for highways, and streets were there is no mud / water.
there are some electrical tractors folks have done, and ones i have seen have been tractors that have been modified, were the engine was switched over to the generator, and removing drive shaft between engine and transmission. and placing a electrical motor back on final drive area of the tractor. keeping the motors up and out the way of water and mud.
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at moment, i just do not see how a electrical motor located at in the wheels / rim. or just offset just outside of the wheel. could hold up.
and due to how the SSTT (sideways snake train tractor) would move, with both transport wheels, and then with large AG tires and/or tracks. i do not see how it would be possible to use drive shafts, to keep the electrical motors up higher off the ground. so they do not get submerged under water or caked with mud, in the every day life, of a field tractor. and if it was possible, (most likely is) adding the extra drive shafts, (like transfer cases for 4WD / MFWD) would add more complexity and points of failure.
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then again, i very well could be wrong. i know, i do not know enough about electrical motors, let alone experience. to fairly judge them. would loved to be proven, wrong!
and i know "i just walked right into it" so lets hear it!