Found my old mountainbike(steelframe) and i saw that its Rear Deraileur was worn out, was wondering would i be able to install a modern deraileur on a bike frame like this? I'd also like to ask if deraileur hangers shown in the picture with be compatible for this frame? Pls i badly need some advise about this as i want to restore this old bike
Also! Can all deraileurs be fitted to ANY bike hangers or frames? (Do they all have standard bolt size and holes)