aka Tom Reingold
Join Date: Jan 2009
Location: New York, NY, and High Falls, NY, USA
Posts: 40,509
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
Mentioned: 511 Post(s)
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Quoted: 7354 Post(s)
Maybe others don't know Steve (your LBS mechanic), and I don't know him as well as you do, but he knows a HECK of a lot about bikes. He might know some estimates of how much force is applied during pedaling and riding over bumps. I've heard some numbers like 500 or 1000 pound-feet of torque at the bottom bracket. How that translates to linear force is something I don't know how to do, but it's not rocket surgery, as they say. I think it mostly involves trigonometry.