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You are right the smaller motors and controlers are so cheap becaues the technology is cheapest and they are mass produced for forklift and floor tug use.
Also some of the high power lathe and milling machines use the larger 7 inch and maybe 9 inch DC motors. These aren't really mass produced but the numbers are high enough to keep the motors from being "custom built".
Lathes, forklifts and tugs use DC systems because the motors and controlers are cheapest.
Why would any one want to completely discharge their battery?
I dont think people want to push their vehicles the last few miles to the charging station.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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