Leafblower-powered tandem bicycle.
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Previously:
https://www.homemadetools.net/forum/...680#post139785
https://www.homemadetools.net/forum/...306#post138800
https://www.homemadetools.net/forum/...623#post139672
https://www.homemadetools.net/forum/...718#post108237
https://www.homemadetools.net/forum/...168#post126187
https://www.homemadetools.net/forum/...646#post104908