Frame modsCustom 'gas' tank concept
OwnerMichael Logue
Owner's Other EV2007 Diggler FS Mountain Scooter
LocationSt. Louis, Missouri United States map
Web/EmailWebPage email image
Vehicle2008 Kikker Hardknock
3/4 scale, bobber style motorcycle with springer forks.
MotorBriggs and Stratton ETEK-RT Permanent Magnet DC
DrivetrainI plan on using a 15T drive sprocket, and 70T rear sprocket.
ControllerKelly PM72401 w/ Regen
Batteries120 BMI LiFePO4, 60.00 Volt, Lithium-Ion
On-board, I will have four, 60V 10AH packs running in parallel via Schottky diodes. Additionally, I will have two, 60V 10AH packs in removable saddlebags - for extended range trips.
System Voltage60 Volts
Charger Thundersky TSL60-20
60V, 20 Amp, LiFePO4 charger.
DC/DC Converter
I will be attempting to use a mini-ITX computer power supply as my DC/DC converter. This would provide 12V, 5V, and 3.3V leads.
InstrumentationI will be using an Eagle Tree data logger which will log voltage/amps used, geo-location (via GPS add-on), temperatures, speed, motor RPM, etc. I will hopefully be able to integrate an Ultra-Mobile PC (UMPC).
Top Speed50 MPH (80 KPH)
Speed at this time is estimated.
AccelerationThis should have pretty good acceleration via the use of the higher torque Etek-RT motor and 5:1 gearing ratio.
Range60 Miles (96 Kilometers)
(estimated)
Watt Hours/Mile60 Wh/Mile
(estimated)
Seating Capacity1 adult
Conversion CostMotorcycle rolling chassis: $1,800
Motor/Controller: $1,000
Batteries: $6,000

And a bunch more down the pipeline......
This is currently a work in progress. I am having the folks over at Thunderstruck EV do a few frame modifications (motor mount and battery bracket) since I know nothing about welding... :( However, everything else I'll be doing myself.

The attached images are conceptual 3D renderings I have done as part of my planning process. I will be regularly updating my build 'blog' over on the Endless-Sphere EV forum.

Update: I have received the frame from Thunderstruck, and am now in the process of building the battery box.

code by jerry