Quote:
Originally Posted by Christ
There's something I didn't think about... if there is no power to the electric motor, does it matter how fast it spins?
Could I put a relay switch on the VSS so that when the driveshaft speed gets too fast, it cuts all power to the motor? Would that work, even though the driveshaft will definitely go faster than 1320 RPM...
I dunno where I can find a 10 HP electric that has dual shaft and revs to like 3-4k or more?
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You should be able to spin over the motor pretty fast, if it isn't making power, since they grenade at ~6-7k rpm under power, and w/ the gearing/wheel size your taco has the motor won't see 6k rpm until ~135mph.
In terms of a suitable motor, a warp 8" at 72V would probably do it. It would make ~20hp@30mph, up to ~40hp@60mph, and back down to ~20hp by 80mph. In terms of off the line performance, it wouldn't be very good because motors like to be around the middle of their rev range in terms of efficiency, so at 10mph the motor would maybe make 5hp at ~50% eff, w/ worse eff before that. If you just wanna cruise around at ~25-45mph w/ the motor, and use the engine for highway and acceleration, then a small inline EV motor would be great. If you want to use it to accelerate too, w/o being slower than the MB powered minivan you were thinking about, you'll need a bigger motor and probably pack, or a motor that's designed to make a lot more power at a much lower speed, about ~500-1000rpm or so, since you don't have a gear box the motor can take advantage of.
Come to think of it, a 8" or 9" motor in the same setup would probably take your minivan w/ the small merc diesel from super-slow, to reasonably slow. Provided of course the diesel could push your minivan well enough at 50mph to get decent mileage.