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Eltrike

PROJECT GOALS

• 40mph on level ground
• range?
• minimal modification to basic trike structure (bolt on)
• reliability
• cost?
• usable with motor off

MOTOR

http://www.cyclone-usa.com/store.php?crn=200

500 Watt Motor with 9.55:1 Planetary Gearbox and Internal Controller

Size: Length: 6.5"L x 3.50"H x 3.50"W
Weight: 7.15 lbs (3.24 Kgr)
Gearbox: Integral, Planetary - 9.55:1 Ratio
Rotation: CCW
Sprocket: 14 Tooth Freewheeling
Motor Controller: Internal, PWM 40Amp Max.
Peak Current: 39Amps
Continuous Current: 24Amps
Maximum Motor RPM: 2800

BATTERIES

Dewalt 36v? http://www.gigatrike.com/dewalt.htm(approve sites)

GEARING

11-34 9spd

• 54/11 = 26.7mph @ 90rpm
• 2:1 differential between front and rear = > 53mph @ 90rpm
• 108/34 = 66 gear inches
• internal hub / schlumpf?
• front derailleur?

SRAM DualDrive 3x7

• 54x11xH = 36mph @ 90rpm
• 54x34xL = 23"