Beer-Electric Hybrid

[dennyt]

First commute on the electric bike!

[dennyt]

Added my first "fuel log" entry. 685 MPG-E at 24mph average rolling speed

[NeilBlanchard]

I have not looked -- does the fuel log do the MPGe calculation; or what conversion factor are you using?

[dennyt]

34.02 KWH/Gal per wikipedia, and I'm measuring KWH at the wall with a kill-a-watt.

Another measured value from this trip: 33.6 wh/mi at the controller.

[dennyt]

1,267 miles on the odometer after the first two months of commuting, 4 days a week. I love not driving my car!

[Fr3AkAzOiD]

Suprising 5 mph cuts your mpg-e almost in half.

[dennyt]

Yeah, the aero drag goes up... exponentially Bikes actually have a fairly high CdA, so making them go fast becomes a challenge, unless you want to go with a recumbent and/or fairing.

Edit - oh yeah, I've been using a different charger power supply lately, and if I leave it on all night, the fans keep running. So the charger efficiency has dropped from 67% to 53%.

That's why the MPG-E curve is steeper than the WH/Mi curve. I measure MPG-E at the wall, and WH/Mi at the controller.