130mm is good news - you can still get hubs even up at Ultegra level as non-disc, 130mm, QR. At higher level, Hope, Royce and White Industries all make such hubs. Best bet is a touring specialist like SJS:
https://www.sjscycles.co.uk/rear-hubs-road-cassette/?page=5
10sp road cassette so you may even squeeze a 36T on there although 34T is probably a safer bet. A 10sp long cage road mech or a 9sp MTB mech will all work.
The headsets a bit annoying as it seems to always come loose. If I tighten it more then the steering almost binds.
Serious question, do you know how to adjust a threaded headset?
Second, are all the parts parallel to each other and seated properly?
Are all the bits there?
Would a square taper mtb triple work?
Would a square taper mtb triple work?
If you get the right length bottom bracket and a suitable front mech, yes.
I've seen them with XT triple chainsets back in the 8 speed days.
I had a Super Galaxy Tandem and speak from experience 🙂
We toured France on one of those bitd. It was ace. Really comfy, practical and fast. The only issue was snapping rear wheel spokes on the drum brake side at the bottom of big hills, presumably due to heat stress build up as it was smoking hot. Other than that, really good, and I would happily get/ rebuild a solo one if I needed a tourer.
^photos above look good!
