Electric Long Bike
Intro: Electric Long Bike
I built this electric bike for commuting to work. I stretched the rear triangle section partly because I wanted the extra cargo room and partly because I just liked the look. :-)
STEP 1: Cutting and Welding
I started with a few curbside-recycling bikes which I welded together to make a stretched frame. I used a simple jig (made from parts of an old exercise bike) to try to keep things mostly straight ;-)
STEP 2: Testing the Hub Motor
This show the initial testing of the hub motor and controller. I'm using a 20Ah 48V LiFePO4 battery, which is not shown in this photo. The hub motor, controller and battery were all purchased on EBAY.
STEP 3: Rolling Chassis
Note the 2 kickstands. I need both due to the stretched frame and the battery weight.
STEP 4: Final Touches
I'm happy with the performance of the bike. I can sustain 25 MPH with moderate pedaling and I can easily commute the 15 miles (each way) to work and the battery still has reserve charge when I return home. I installed a DC-to-DC converter (from an RC Hobby supplier) to generate 6 Volts to run the headlight and tail-light so all the electrics on the bike run from the 48V battery.
36 Comments
PracticalProjects 9 years ago
Great work!
davintosh 11 years ago
scd 11 years ago
The Sloth Uprising 12 years ago
MagaSaga 12 years ago
scd 12 years ago
mrbones121 13 years ago
scd 13 years ago
Idahi 12 years ago
rrosenberg 12 years ago
scd 12 years ago
Idahi 12 years ago
Idahi 12 years ago
We are the manufacturer of the e-bike conversion kit,if you need,you can contact me.
dogbeardbirdbeer 13 years ago
scd 13 years ago
BlauFusion 13 years ago
I do think that dogbeardbirdbeer has a point, in spite of the gruffness of his comment. Due to the lengthening of the frame, the bicycle is structurally weaker than it was originally. Specifically, the area between the seat post and the rear tire. You might avoid future problems by adding a pair of additional braces. I'd say the most efficient placement would be to divide the rear parallelogram into two triangles. In a line similar to the top/front of the rear tire. Just a thought.
amshaw1 13 years ago
I've got a kit from eBay, but I'm concerned that it would not be road legal?
JD_Mortal 13 years ago
In "Florida", any motorized vehicle needs a license and a plate for a motorcycle. Since there is a second law that states it is illegal to drive any motorized capable vehicle on sidewalks. (Even if you do not use the motor, it is motorized.) Thus, you are left driving on the road, and driving a motorized vehicle on the road requires a license and a tag. The only license and tag allowed on a non-car, is a motorcycle license and motorcycle tag.
Thus, any motor is legal, as long as all other road-vehicle requirements are met. (Mirrors, signal lights, breaks with adequate stopping power for the drive-system, helmet, and break-lights.)
Most states have similar DOT laws. Few states allow motorized vehicles on sidewalks, and most demand similar requirements for motorized vehicles on the roads. Just because you can't find the laws, or because you haven't been caught yet, or they don't actively enforce them... does not mean they don't exist. Ask your insurance company. That is when laws get actively enforced 100%. On the road, it is a lotto gamble.
BTW, Nice setup.
cambigfoot 13 years ago
Achan20 13 years ago