| Owner | Brad Hori | ||||||||
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| Owner's Other EVs | 1997 AeroVironment Charger 2005 EV Global Ebike | ||||||||
| Location | Monrovia, California US map | ||||||||
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| Vehicle | 2007 HP Velotechnik Speedmachine Custom ordered Speedmachine from Bent Up Cycles in Van Nuys CA with Rohloff Speedhub, Avid Carbon Juicy disc, Under seat steering, Aeroheat wheels, rack, 2 bags, new Xpedo titanium peddles, new Stronglight CF/titanium Crank | ||||||||
| Motor | Power Pack Motors 24-48v 3-Phase AC Brushless Motor Corporation 1 HP @ 36 volts 4500 RPM. Special CCW running motor. Bought from Scott at evdeals.com | ||||||||
| Drivetrain | 2 chains split at the jackshaft. 39 tooth front sprocket (was 52T) to a 18 tooth on the jackshaft. From there a 24 tooth back to the 15 tooth on the Rohloff keeping the original ratio. | ||||||||
| Controller | PowerPack 3 Ph 24-48 V 35 amp max. Works with Resistive or Hall effect throttles. | ||||||||
| Batteries | 2, 37.00 Volt, Lithium-Polymer Made by www.batteryspace.com These are 37 V at 10 AH. Built in charge controller-over/under voltage and over current. Using 2 packs in parallel. 2 to 3 packs will fit in the pouch along with 2 chargers. Batteries weigh 4.50 pounds each! Actual usable voltage range is 42-32 volts. | ||||||||
| System Voltage | 37 Volts | ||||||||
| Charger | 1.7 A at 42 volts max. Bought from BatterySpace for their pack. | ||||||||
| Heater | Sun/body | ||||||||
| DC/DC Converter | Astrodyne ASD15-48S12 18-75 V in. 12 V at 15 watts out. Used for turning on the relays through a reed switch through the kickstand! Can run headlight, GPS and other equipment. | ||||||||
| Instrumentation | Cateye computer Garmin Vista CX GPS Battery SOC Meter | ||||||||
| Top Speed | 42 MPH (67 KPH) First test I got to 33 MPH, down the street but had to stop. Still plenty of power on tap. Will update after my second ride. Oh I peddled a little, at least tried to keep up. Second test coming into work, 41.3 MPH and still more to go as I got scared and shut it off!!! Had to go over the RR tracks.... | ||||||||
| Acceleration | Blindingly fast. Was that a word? Holly S#$*! Neck snapping since it makes use of the 14 speed Rohloff! Can't shift fast enough! | ||||||||
| Range | 30 Miles (48 Kilometers) That's just a guestimate. I'll let you know later. | ||||||||
| EV Miles |
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| Seating Capacity | 1 adult | ||||||||
| Curb Weight | 66 Pounds (29 Kilograms) The bike starting weight was 45 pounds. The batteries were 9 pounds, the motor assembly was 10.7 pounds, plus other odds and ends. | ||||||||
| Tires | Schwalbe Stelvio 20 x 1.125 front 26 x 1.10 rear | ||||||||
| Conversion Time | About 2 months off and on, weekends, vacation hours etc.. Lots of machined parts. Still doing a little work here and there. | ||||||||
| Conversion Cost | Bike $7500 Motor/controller, 2 battery packs $1500 | ||||||||
| Additional Features | System turns on with the kickstand up through a reed switch and magnet. DC-DC can run headlight and GPS. Tail light comes on with kickstand also. | ||||||||
| Still need to refine and fine tune but the first test was better than I thought it would be, by a factor of WOW. Added better bearings to the jackshaft this week. Tried twist throttle but may like the thumb/finger throttle better.. Just updated the crank to a Stronglight Pulsion with carbon fiber and titanium. New peddles are Xpedo titanium/titanium. Saved about 2 pounds in the process. Had to remake the chain tensioner because of the new Q factor. Used 7075 Al this time to save some weight! Added 3 LED's for headlights. 1 Watt each. Can be switched from 1,2 or all 3 on,or off! Working on garage door opener. I just have to mount it and wire to the switch on the left hand grip. | |||||||||
2007 HP Velotechnik SpeedMachine
Last Updated 12-02-2008
Copyright © 1997-2008 by Mike Chancey