Double pedal power
06-20-15, 12:32 PM
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Double pedal power
Is it possibal to create a double peddal powered bike on a fixie. What i mean is a flipflop wheel and then 2 exact chain rings on both sides of the crank give me ur thoughts.
06-20-15, 12:37 PM
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Why? You do know the right and left sides are connected in the bottom bracket, right?
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06-20-15, 12:39 PM
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I don't think it would work but what are you trying to accomplish?
The issue is the machining for the freewheel/fixed gear hub. I guess you could use a tandem crossover crankset and get a hub that was machined fixed/fixed and put a fixed gear cog and lock ring on each side but the left side would be threaded backwards so you'd be relying on the lock ring to hold it in place.
The issue is the machining for the freewheel/fixed gear hub. I guess you could use a tandem crossover crankset and get a hub that was machined fixed/fixed and put a fixed gear cog and lock ring on each side but the left side would be threaded backwards so you'd be relying on the lock ring to hold it in place.
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06-20-15, 12:43 PM
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All that would achieve is halving the load on each chain. Power in = power out (less losses to friction), no matter how you get from in to out.
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06-20-15, 12:45 PM
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Most left side axles aren't long enough for a crankarm.
Someone has probably done it as a novelty, with some creative kludging.
Someone has probably done it as a novelty, with some creative kludging.
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06-20-15, 12:46 PM
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06-20-15, 12:54 PM
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Yes, someone posted about on another singlespeed forum. It may have been a freewheel set up, but it was a double ring, one on each side. They used a tandem crank if i remember correctly. It was done because... reasons
06-20-15, 01:07 PM
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Probably just for the fun of it.
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06-20-15, 02:35 PM
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Totally possible, done occasionally on show bikes:
06-21-15, 12:47 AM
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I've seen track sprint bikes with a double drive setup, but the left chain simply looped over.
Extra strength right at start, then the chain would disengage to save weight.
Extra strength right at start, then the chain would disengage to save weight.
06-21-15, 05:49 AM
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Additional expense with additional maintenance for minimal (if any) gain. What's not to like?
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