How about 3 parallel channels of different width, one for each bike? Make the left and right far enough apart so that you can carry 2 bikes while the third tows. If you never need to haul 2 bikes at a time, then make all 3 channels close to the center.
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread
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