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Hello /n/iggers.
I have an Elops 500 single speed from Decathlon. I've got tired of single speed commuting, and I also want to do long distance rides in hilly regions, so I've thought about converting this single speed to a geared bike, since it probably would be cheaper to build up a frame rather than buying a new bike. Also the frame is steel, and it's hard to find geared steel bikes around me.
So, would it be possible to just slap a 1x groupset from Aliexpress on it, like a Sensah SRX Pro? Is a normal derailleur hanger going to work or am I going to have to buy one specifically for a fork end frame? Is this going to work well on a 120mm axle or am I going to have to bend the frame or some shit? Am I going to have to buy other parts (outside of changing the handlebars)? Should I even attempt doing it as an amateur?
I've added a pic rel of specs and the rear of the bike. I don't have that much experience with bikes outside of maintenance, but I've done a fair bit of car repairs and I have some tools for it. Thanks.