Schwinn Sales West
Cruisin' on my Bluebird
You mention that it's a user error well I think it's both a "user error" and a "parts problem." If Schwinn had made a longer quill stem to begin with (not the gooseneck itself mind you) but the part of the stem that inserted into the steerer tube, had that been made longer like another 6 inches...so if you add how tall it originally the standard stem was plus 6 inches, I'm guessing it would've been like 10 inches overall or even 12 inches, that would've solved the issue. Then those "knucklehead kids" could've raised the quill stem without breaking the weakest point on the fork where the threads ended outside of the fork for the headset. They done that for both the 22.2 mm and the 21.1 mm I would've like I said solved the problem. That's why I'm not putting a standard stem from Schwinn on my stingray I'm putting a longer non-Schwinn stand that way kids can raise it up and lower it as they please and it's not a big deal.
Yup.....We all have a solution.
The basic issue was that Schwinn made a 20" boys' model for decades before the first Sting Ray came along, and never had a problem with consumers breaking fork tubes. The High Riser handlebar was added to the mix in 1963, and the breakage problems began. I say "breakage problems" because it was not just the fork tubes breaking, it was also the frames from jumping and wheelies. Look, I was an "old kid" in 1963, and I can assure you we beat the hell out of those bikes. I can call them Knuckle Heads, because I was one!
Schwinn always used the short frame head tube on the 20" and 24" boys model frames. In retrospect (with 60+ years of crystal-clear hind sight) they should have changed the boys frame design to the taller head tube used on the girl's model frames. Then they could have used "your suggestion" of a longer stem. The 1939-1967 Schwinn Cycle Truck used exactly the 12" forged stem you are suggesting (Superior Stem), so the parts were already "on the shelf". But I do not believe the taller stem would have solved any problems without having a taller fork tube for better insertion below the threaded "weak point".
Please remember, these bikes were able "to be retailed" for $39.95, because they just used "off the shelf parts" that already existed. It was only after everyone had a clear picture of the high-volume demand that Schwinn, and other companies (vendors) like Ashtabula, Good Year, Uni Royal, Carlisle, etc. had the balls to spend $$$ and gear up production and invest into new unique parts like "Slick" tires, and later MX tread tires for the BMX. In the beginning, the Sting Ray was a very simple model. Just a basic bicycle with a few deletions and additions to the build sheet.
John