Convert single speed, steel framed, vintage track bike to geared Is there any way to convert a steel framed single speed vintage track bike to a geared bike? I have a track bike with only the rails for the wheel but I've moved out of the city and there are more hills where I am now living so would like to convert to gears if possible and rather than buy a new bike, save some cash.
this is actually the bike. Apologies for the butchering of its style in this form. sorry don't have a closer pic at the moment. I don't have the bike at my home and cant get to it due to lockdown :(
Yes. Absolutely. Simply install an internal gear hub.
Prices for internal gear hubs are basically what you want to spend: You can buy decent second hand IGHs (SRAM 7 speed, 300% gear spread, super reliable) for as low as 25 Euros, or you can invest roughly a thousand euros into a new top-of-the-list IGH (Rohloff, 14 gears, 500% gear spread, super reliable, no-delay switching, losses similar to a chain-shift bike), and there are quite a few models in between these extremes.
In any case, with an IGH you get much more robust gear shifting than with a chain-shift bike, and you won't need to dish the rear wheel or widen the stays of your frame(*). It's really the worry free solution.

*) Unless the frame was built for axles shorter than the standard 135mm that is common for single speed and IGH bikes. But even if that's the case, you won't need to widen the stays nearly as much as you would need for a large cassette. You'll most likely be able to do it with your hands alone.