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Old 05-12-07, 08:55 AM   #1
n4zou
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Illegal electric scooter to legal bike pusher.

I was given an electric scooter by a neighbor, as he knew I would do something fun with it. They're Illegal to drive on the street. Here is the type scooter it was.

The scooter given to me was already partially stripped.
I subsequently welded mounts to the striped frame so it would bolt to the dropouts of a TRI Hitchhiker. A tri Hitchhiker is a single wheel trailer with pedals and seat so a child may ride it while being pulled by an adult on the bicycle and allows the child to be a stoker and help pedal.

The above picture is the Tri Hitchhiker I used. I had been using it as a trailer and had striped the pedals and seat from it and added a rack.
Here is a photo of my son test riding the electric stoker.

Here is a photo showing how the electric scooter frame is attached to the Tri Hitchhikers dropouts and chain stays.


Note how I just drilled a hole for a 3/8 bolt, nut, and kickstand top chain stay clamp. Also note the steel brackets welded to the scooter frame and bolted to the Tri Hitchhiker wheel dropouts. This allows the scooter frame to be removed from the Tri Hitchhiker allowing it's original wheel to be reinstalled and be used as a trailer once again.
This entire rig becomes a street legal electric bicycle under the current US electric bicycle rule.
This scooter has a 250-watt electric motor so it will not push the bicycle up steep hills but it will give you help up those hills and cruse along easily on level pavement.
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Old 05-12-07, 10:33 AM   #2
Zeuser
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That's pretty clever. Doesn't it want to "swap ends" on you sometimes? A situation where the hitchhiker wants to get ahead of the bike?
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Old 05-13-07, 08:07 AM   #3
n4zou
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Quote:
Originally Posted by Zeuser
That's pretty clever. Doesn't it want to "swap ends" on you sometimes? A situation where the hitchhiker wants to get ahead of the bike?
I thought that might be a problem as well but after finally getting to play with it myself (you cant imagine the fun my son was having with this thing) I found this was not a problem at all. I got the idea for doing this after running across the Motobob site.
http://www.thunderstruck-ev.com/motobob.htm
I figured if it would work for a BOB trailer it would work on the Tri Hitchhiker as well. I was so impressed with how easy this project was I am planning on building another stoke monkey but this time it gets a 5 HP B&S engine and CVT. Here in Alabama you can legally operate a bicycle with engine attached provided the engine is rated at 5 HP or less and does not exceed 150cc in displacement.
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