Bike Forums - View Single Post - Question on measuring frame alignment

08-26-14 | 09:48 AM

#9

noglider

aka Tom Reingold

Joined: Jan 2009

Posts: 43,976

Likes: 6,158

From: New York, NY, and High Falls, NY, USA

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

Quote:

Originally Posted by eschlwc

i'm impressed with your work ... and that beautiful frame.

but if the whole length of the wheelbase (from front fork to rear drops) is only 2mm different on one side, this means it's really off by only 1mm, right?

so i would just focus on the geometry of the rear triangle (from seat tube to drops) and get it to within a mm difference.

I believe this is right. 1mm is too little to worry about.

The cause of the misalignment is merely an academic question. Are the head tube and seat tube parallel to each other on the vertical plane?

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Tom Reingold, tom@noglider.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog

“When man invented the bicycle he reached the peak of his attainments.” — Elizabeth West, US author

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