I've been working on a trike, but I can't figure out why performance is so low per amperage used.
It is running off 6 MAXX29 lead acid batteries for a 72v system. I have it geared with a 16 and 60 tooth sprocket for 3.75 gear reduction and am using R15 tires. I am also using 2/0 gauge wire and an Alltrax SR72500 motor controller.
When I limited the controller to 175 amps at the battery, 225 at the motor, I could not get it above 50 mph and it barely accelerates above 45 mph. Also performance under 15 mph or so is terrible, perhaps due to lack of a gearbox and a lower gear.
This frustrates me as the following 72v Geo Metro with the exact same motor (ME1003, brushed) apparently needs only about 100-120 amps to hit 50-55 mph (http://www.johnsavesenergy.com/GeoEV2.html).
Curious from a technical and aerodynamics perspective (final shape is in the video), any clue what I'm doing badly that could account for a hatchback getting better efficiency than my at least attempted as streamlined trike?
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