Joined: Mar 2024
Posts: 1,948
Likes: 783
From: San Diego
Bikes: Columbine, Lynskey GR300, Paramount Track Bike, Colnago Super (4), Santana Tandems (1995 & 2007), Gary Fisher Piranha (retired), Bianchi Track Bike, a couple of Honda mountain bikes
I'm curious. The rule of thumb is that the knee should be directly above the pedal spindle when the knee is bent 90º and the cranks are parallel to the ground and seat is properly set fore and aft. This is true on my road bike that has been professionally fit. Our tandem has more relaxed seat post angles which puts the seats further back and our knees are bent about 70º when the cranks are parallel to the ground.
Both bikes fit well and we have no pain or discomfort.
Is this theory only applicable to some bikes?