Join Date: Feb 2010
Location: Philadelphia area, Pa., USA
Bikes: Santana Cabrio triplet, Santana Fusion S&S tandem, Co-Motion Mocha S&S tandem, Co-Motion Pangea S&S, Co-Motion Nor'wester S&S, C'dale F2000
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Triplet/Quad riders: cranks out of phase?
We've had a Santana Cabrio triplet for 5-6 years now, and have lots of good miles under our tires on it. As our son has gotten older (he's 11 now), it's begun to feel like he is not "pedaling his own weight" since he's also gotten heavier. He's a pretty strong biker on his single bike, and definitely contributes great "turbo boosts" to the triplet when needed. But I feel like maybe he's not getting enough feedback through the pedals on the triplet to be able to gauge his effort. (We've talked with him, and he swears he is pedaling hard.) Or maybe I'm just perceiving his input to be not up to par.
So... I'm interested in hearing from any triplet owners who have tried out-of-phase cranks. I know on a triplet that it would definitely help smooth out the power flow, but I'm also worried about the potential for hitting pedals around curves, etc. If you've tried OOP on a triplet, quad (or longer) bike, how did it work for you? How much OOP did you go? Just a few teeth on each position (like captain leading by 10 teeth, middle position by 5 teeth, etc.)?
I am NOT looking to start a general crank phase discussion, but specifically looking for input on 3+ seater bikes.