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Old 12-30-2018, 01:26 PM
mmartin798 mmartin798 is offline
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Join Date: Feb 2014
Location: Michigan
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Felt obligated to do the math and stuck with the HEMTT A4, since I have all the specs I need for the calculations. Looking at maximum torque at the wheels; taking into account the engine torque, transmission and transfer case gear ratios; we get a total torque at the wheels of 15 252 Nm or 1906 Nm per wheel, since you can just divide it if you are assuming straight line thrust.

Looking at some Moog DB-22000 series motors, this puts us right in the middle of the pack. If we go with a DB-22000-E at each wheel, we get 2539 Nm of torque in a package that is 181 lbs and measures 5" in diameter and is 5.15" long. Since this is a frameless motor, we can add about another 5" or so for the frame, cooling system and other monitoring and diagnostic components and still fit inside the 17" rim with room to spare. If we assume the mass of each motor goes up to 250 lbs each, we only top out at 2000 lbs, which is about 1000 lbs less than the diesel it would replace.

Since the HEMTT A4 has the same performance specs, twice the axels and twice the mass of a V-150, the motors for a V-150 would probably be the same size with a proportional weight savings.
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