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Unknown bike possible crome moly tubing

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Unknown bike possible crome moly tubing

Old 07-15-15, 08:32 AM
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Unknown bike possible crome moly tubing

I appreciate any comments or help on the below, Iíve enclose several photos to assist.

Iíve picked up another unknown bike, Iíve enclosed a photo as it was on collection yes a wreck but thatís my hobby so its accepted & over here its not easy finding older bikes in better condition without costing a fortune.

To me the most striking thing when first saw the bike was the short frame distance, note between the rear wheel & the seat tube, the chain stays are very short in comparison to my other bikes, Iíve tried measuring the seat tube angle I make it 75 or 76 degrees accepted my measurement is incorrect but its not 73í.

On stripping the bike down, & paint off, I notice the seat tubing is incredibly thin so I assume its crome moly ? from what I can make inside the BB the down tube is the same gauge.

The seat tube ID is 25.8mm which is rather unusual size, the BB is 68.mm, the rear drop outs are spaced 128.mm itís a 10 speed (5 x 2)
It would seem that on the head set they use different brazing rods as all the other connections are the usual brass but these seem to be done with copper rods ?

My best guess is about late 1980s early 1990 Schwinn the frame # is F3E00010
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Old 07-15-15, 08:41 AM
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investment cast seat lug (maybe headlugs, too) so probably an '80s product, but 128mm rear spacing would be for a 6 or more likely 7-Spd rear, not a (120mm) 5-Spd. Looks to be tidy brazing in most of those joints.
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