MY Experience.
One 1980 Schwinn Voyager, Broke both seat stays, just below lug. Took it to a local welder and he brazed a stiffener between the stays and repaired the break. Got a new paint job at the local auto body shop (in HOT ROD RED) and it's back on the road, to work in at least every month of the year (4 miles).
1975 MKM Been my main ride for 25 years. No problem
Riding in defiance.
Dave Duerk Defiance OHIO