Here's the level of detail I sent to Motofan; first, I sent him the specs for the model, then I sent him the specs for my bike. If you compare the two sets of specs I sent, you'll see some differences. One thing, I forgot to include data on my bottom bracket, and that should be a part of the database, I think.
1977 Motobecane Grand Touring Specs (source: Bicycling! Road Test)
Frame: Vitus 172 double-butted main tubes; Bocama cutout lugs; Motobecane deluxe forks; Suntour GS dropouts.
Frame sizes available: 21, 23, 25 inch diamond frames; 19.5, 21 inch mixte frames; (frames measured c-t; source: personal knowledge).
Frame colors available: Gun Metal Grey, Champagne.
Frame specs: (Frame size tested: 23 inch) Top tube 23", Seat tube 23", Chain stay 16.75", Fork rake 2", weight 25 pounds, bottom bracket height 10.75", wheelbase 40.25", head tube angle 74 degrees, seat tube angle 73 degrees.
Head badge: Round brass "flying M" (Source: Road test photos)
Crankset: Takagi Tourney SP, 40/52 chainwheels, 170 mm cranks.
Pedals: KKT TPA alloy or Atom 440
Freewheel: Suntour ProCompe gold 14, 17, 22, 27, 32
Derailleurs: SunTour VGT w/Downtube shifters.
Brakes: Weinmann 99 Centerpull w/Dia-Compe levers and extensions.
Wheels: Hubs: Normandy high-flange with quick releases. Rims: Rigida alloy 27" X 1 1/8". Spokes: three-cross. Tires: Michelin Elan.
Saddle: Sella Italia padded suede
Seat post: SR P3 with Simplex binder bolt.
Bars: Pivo Pro Randonneur bend with black cloth tape.
Stem: S.R.
Price: $240.00
Distributor: Lawee, Inc., 899 Cowles Street, Long Beach, California 90813.
Road test: Bicycling! September 1977. Reviewed by Gary Fisher.
1977 Motobecane Grand Touring
Serial Number:
Owner:
Purchase date: June 21, 1977
Purchased from: Desimone's Drive-In Cycles, Santa Clara, California
Specs:
Frame: Vitus 172 double-butted main tubes; Bocama cutout lugs; Motobecane deluxe forks; Suntour GS dropouts.
Frame size: 23" diamond frame (c - t).
Frame color: Gun Metal Grey, with black bands and gold trim around the black bands on seat tube, black silkscreened "Grand Touring" on the top tube, black silkscreened "Motobecane Made in France" on the downtube, gold trim around the lugs.
Frame specs: Top tube 23", Seat tube 23", Chain stay 16.75", Fork rake 2", weight 25 pounds, bottom bracket height 10.75", wheelbase 40.25", head tube angle 74 degrees, seat tube angle 73 degrees. (source: Bicycling! Road Test)
Head badge: Round brass "flying M"
Seat tube decals: Vitus 172 just below top tube, red, white and blue "M" (with "Motobecane" in the white portion) between the two black bands.
Crankset: Takagi Tourney SP, 40/52 chainwheels, 170 mm cranks.
Bottom Bracket: T.B.A.
Headset: T.B.A.
Pedals: KKT TPA alloy
Freewheel: Suntour ProCompe gold 14, 17, 22, 27, 32
Derailleurs: SunTour VGT w/Downtube shifters.
Brakes: Weinmann 99 Centerpull w/Dia-Compe levers and extensions.
Wheels: Hubs: Normandy high-flange with quick releases. Rims: Rigida alloy 27" X 1 1/8". Spokes: three-cross. Tires: Michelin Elan.
Saddle: Sella Italia padded suede
Seat post: SR P3 with Simplex binder bolt.
Bars: Pivo Pro Randonneur bend with black cloth tape.
Stem: S.R.
Price: $240.00
Last edited by Blue Order; 09-24-07 at 06:29 PM.