I want to convert a Workcycles Opafiets to an electric bicycle. The bike has internal gearing, roller brakes and a light dynamo all of which I want to keep so I'm thinking of adding a mid drive kit. My commute is in all types of weather. The local bicycle shop owner was saying that mid drive kits are very new to the market and can have some problems. What does everyone think? Any recommendations for choosing a kit?
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