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248 Posts
Hey folks,
I was hoping maybe somebody had ideas for increasing EV efficiency.
I have a 1986 BMW 325SE, manual transmission, w/Warp9. I calculate my efficiency at a modest 300-350 Wh/mi (not the best, not the worst).
I also own a Prius. When I "coast" the Prius... it goes for miles. Rolling rolling rolling. While my BMW seems to vapidly lose every precious electron of momentum and maybe get 1/4 the distance for the same flat glide. I check the tire air weekly and fill to maximum sidewall pressure (44psi for both). This is a mostly back-roads commuter, I do about 80% 30-40mph, 20% 40-60mph, 40mi/day. I have 14kwh capacity, that's not the problem, I just want to use less.
I realize the Prius is MUCH lighter, more aerodynamic and has a dozen or so small (and important) reasons why this is so... but is there anything?
- New (better) bearing
- thinner tires
- covering the bottom
- modifying the body (I kinda like the 80's Brat-Pack-Mobile look, but I'd consider it)
-Bruce
I was hoping maybe somebody had ideas for increasing EV efficiency.
I have a 1986 BMW 325SE, manual transmission, w/Warp9. I calculate my efficiency at a modest 300-350 Wh/mi (not the best, not the worst).
I also own a Prius. When I "coast" the Prius... it goes for miles. Rolling rolling rolling. While my BMW seems to vapidly lose every precious electron of momentum and maybe get 1/4 the distance for the same flat glide. I check the tire air weekly and fill to maximum sidewall pressure (44psi for both). This is a mostly back-roads commuter, I do about 80% 30-40mph, 20% 40-60mph, 40mi/day. I have 14kwh capacity, that's not the problem, I just want to use less.
I realize the Prius is MUCH lighter, more aerodynamic and has a dozen or so small (and important) reasons why this is so... but is there anything?
- New (better) bearing
- thinner tires
- covering the bottom
- modifying the body (I kinda like the 80's Brat-Pack-Mobile look, but I'd consider it)
-Bruce