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Old 07-21-2013, 06:27 PM   #212 (permalink)
freebeard
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There's any number of them; a low frontal area kit that [lets/requires] you [to] pick your own drivetrain with reasonable aero; i.e., Sterling/Nova, & etc.

There's proprietary commercial kits. For example the Smythe Performance TDI middy

Then there's the reverse trikes, notably the XR-3 from Robert Q. Riley.
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