Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,095
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4210 Post(s)
Two issues are presented in your post.
First is the gearing/wheel speed one. Two rather different gear ratios will have differing ease to spin up to the same wheel speed.
Second is the comparative friction in the bikes. There's every reason under the sun for two bikes to have different efficiencies in their drive trains. Wheel bearing condition, seal drag, QR skewer preloading, der pulley friction, chain condition, chain line in the two cog combos stated are the first aspects that I think of.
You could have each bike detail tuned by the same wrench then re compared. Don't know what you'd find out. Or you could just maintain them and ride happily. Andy.