A place on the fediverse to share and discuss about commuting by bicycle
Are you also getting new rear wheels? The 7 speed hub is probably not wide enough for anything other than 7 speed. You might need a new rear wheel.
Does the sora have a front derailleur? Are there suitable mounts for it on the frame? (As the triban does not have a front derailleur).
If you made sure everything is compatible, it can be done, even by beginners. Just calculate extra time for watching YouTube vids 8-)
I bought all the things exactly like in this post on Refdit. So, it should work without changing a wheel and also I ordered front derailleur of "B" (Band-Type) series that is suitable for mounting without special mount. I hope it will fit, otherwise it will be a huge waste of money (about a half of the new Triban 100 price).
Triban 100 is a nice bike for it's price and I had a lot of good time with it. But after my last trip to one of National Parks with small-scale mountains (about 1000-1500 meters above the sea) I realized that it is very hard to go up with 44/28 lowest gear. Maybe bying the whole new bike will be easier but I already named my Triban 100 and also I do not like to buy new thing and produce waste when I can upgrade existing one. With Sora I will have 34/34 and it should cover elevations up to 20% that is enough for the most of beautiful places around me.
Ok, sounds good then. A 34:34 will be a big upgrade over the current setup