Very nice story of the wizzer. First time I saw one was in Ashland, Kentuckey. At a fly in went there in my KR-2. I was ready to buy one couldn't fit it in my plane. That is what stopped me and I didn't have my hacksaw with me.
I need a mill. I'd like to try to major modify a briggs into a china doll type engine and if they are illegal might a well make it a 2 speed or 3 speed. I don't want to have to license and registration and insurance thing for a simple bike so the gears are just day dreaming. But if I get my hands on a mill. I know how to make molds and cast aluminum in sand, look out.
Norman

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norms-iron-works.tripod.com
motor assisted bicycle engine headlights that work off of your white power wire. check it out