BikeEV Specifications
The following list of specs is primarily from my memory; errors and
omissions will be corrected as they are discovered!
- Motor:
-
24V permanent magnet DC (PMDC), 1HP with integral 11:1
right-angle reduction gearbox (330RPM max. at output shaft).
Sourced from EMD (Electric Motor Developments) in Essex, UK.
(approx. 23lbs)
- Controller:
-
Made by Curtis (1206?), purchased rebuilt from Test Engineering
with custom 80A current limit to protect the motor.
- Batteries:
-
2 Hawker Genesis 12V 26Ah sealed AGM lead-acid batteries,
wired as a 24V pack.
- Powertrain:
-
Parallel human/electric hybrid. The rear wheel is driven by
a 7-speed Sachs internal hub, which is in turn chain-driven
from the motor output shaft (at a 1:1 ratio?). The motor output
shaft can be driven directly by the electric motor as well as
by the pedals, via a 7-speed cassette. A freewheel between the
7-speed cassette and the motor output shaft allow the pedals to
remain stationary even while the motor is running.
Performance:
- Top speed:
-
50kph (level ground, electric only)
60kph (electric + pedal assist).
- Range:
-
30km to 80% DOD (real-world commute with hills at full speed
with occasional pedal-assist).
- Cost:
-
Bike (including Zipper fairing and Sachs hub): C$2500
Electric drive components: C$500
- Weight:
-
approx. 100lbs total (23 motor + 29 bike + 23/battery + misc.)
- Questions? Comments? Feel free to contact us:
-
Rob Cameron
Roger Stockton
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