Maybe try asking the tandem thread? Also, fillet brazing is fairly common on tandems as most tandems were custom made/custom geo, and no one made lugs for this
good shout - that makes sense that lugs would be rarer for these... will have a look through the tandem frame and possibly try to take some better pics before posting there...
Maybe try asking the tandem thread? Also, fillet brazing is fairly common on tandems as most tandems were custom made/custom geo, and no one made lugs for this