Oregon Handmade Bike Show, Cargo Bike Summary

October 10, 2010

Thanks to OBCA, Oregon Bicycle Constructors Association for sponsoring the Oregon Handmade Bicycle Show. There were many fine handmade bikes at the show, each showing elements of style unique to the individual builder. It was very inspiring. I was particularly attracted to the cargo hauling features of the bikes and their potential with an electric [...]

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Interbike 2010 Electric Bike Summary

October 5, 2010

Interbike 2010 had many electric bike and electric assist products on display. I got the sense that electric assist is not only hear to stay but is growing rapidly. In addition to all of the products, LEVA, Light Electric Vehicle Association, offered several interesting sessions on topics including eBike trends, retail sales, technical, and federal [...]

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Start with the right bike when converting to an electric bike

September 6, 2010

Every electric bike conversion project starts with both a bike and a conversion kit. In this post I’ll share with you what I look for in a bike to determine if it is suitable for an electric bike conversion. After completing four electric bike conversions to date, I have a really good idea of what [...]

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Replaced the seat stays to make room for electric bike battery box

August 31, 2010

I decided how I’m going to solve the problem described in the post ‘How to make an electric bike battery box that will fit all battery packs’. In this post I describe the first step: widen the seat stays to make more room to accommodate the batteries. I’m using my new ½” tube bender to [...]

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Bicycle wheel building : part 2 : installing left side trailing spokes

August 20, 2010

This video shows how I install the trailing spokes on the left side of the wheel for a 20”, 32 spoke, cross 3 wheel. The follow on videos will show how I install the remaining spokes and tune the wheel. This wheel will be used on the ShortHopper electric bike. To see more about this [...]

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DIY rear stay jig for electric bike frame building

August 17, 2010

Out of my need to build electric bike frames on a budget, I have to build a lot of my own tools. One of the tools I’ll need in my next build is a jig to hold the rear stays in place while tacking them into place. I’m fillet brazing my stays so they need [...]

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Bicycle Wheel Building : part 1 : installing the right side trailing spokes

August 8, 2010

This video shows how I install the trailing spokes on the right side of the wheel for a 20”, 32 spoke, cross 3 wheel. The follow on videos will show how I install all of the spokes and tune the wheel. This wheel will be used on the ShortHopper electric bike. To see more about [...]

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How to make an electric bike battery box that will fit all battery packs.

August 2, 2010

How is it possible to make one battery box that will fit all battery packs? You make the box fit the largest of the lot. Of course this is a bad idea and not really practical for an electric bike. Maybe it’s practical for an electric cargo bike that has lots of room but for [...]

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What affects how a bicycle steering feels?

July 29, 2010

There are many parameters that affect how the steering feels. One of those parameters is called trail which I describe in this post. Trail is measured from the point on the ground intersected by a vertical line through the dropout to the point intersected by the head tube centerline. This is shown on the drawing [...]

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ShortHopper electric bike takes shape

July 23, 2010

This ebike frame is complete. There is a lot of finish work left to do. However, I couldn’t resist building it to the point where I could go for a test ride. First I had to build the front wheel. There is a video of this in the works. I hope to post it soon. [...]

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