OwnerMike James
LocationWichita, Kansas United States map
Email email image
VehicleSchwinn DYNO
mountain bike
MotorBosch EV Warrior Permanent Magnet DC
two 12 Volt EV Warrior surplus
DrivetrainFriction drive with roller clutch
Controller MCIPC-24
from Diverse Electronics
Batteries2, 12.00 Volt, Lead-Acid, AGM
17 Ah, from
System Voltage24 Volts
12 Volt 10 Amp fully automatic charger
InstrumentationInstrumentation? We don't need no steenking instrumentation!
Top Speed20 MPH (32 KPH)
Range9 Miles (14 Kilometers)
Seating Capacity1 adult (Duh!)
Curb Weight0
unknown, but pretty dern heavy
TiresOriginal knobby mountain bike tire on front,; smooth racing tire on back.

All the untested guesses above such as speed and range are based on Bill Atherholt's bike, the Ya Hoo, since both of our bikes used very similar configuration. The picture on the top right is a front view of the "throttle" thumb lever. Its basically two pieces of aluminum bolted onto the shaft of the potentiometer with a spring attached to that screw eye. i'm sure there's a better way to do this, but this works pretty well. The really cool thing about this bike is that the entire motor/batteries/controller apparatus is attached only to the seat post. You can take it off and put it on any bike, except for the throttle assembly. The cover on the back is just for looks (so you can't see the messy wiring) It was sewn out of an old "Mission Impossible" shirt, so it still has the logo and a little breast pocket on the side. The pads holding to batteries on are made of foam from a children's bathing suit. I don't know if they're really necessary, we just thought it might be good to have them there in case of a crash. Well, that covers just about everything. Oh, you can get the batteries and the motors at, for $80 total. The controller cost $40 at Diverse Electronics. (WebPage ) The most expensive item was the charger, $60 at the local auto parts store. Total cost was about $200, with the wiring, and the angle for the frame. Thanks to Bill Atherholt, for the inspiration and direction in building this bike.

code by jerry