I was looking online for a flip flop hub and noticed that there are typically options for a 120mm, 126mm, and 130mm. I know that the 120mm is the standard track hub. I was wondering if the 126/130mm hubs are physcially bigger than the 120mm or are they the same size but with longer axles and spacers? If the former can I assume that the chainline will be further out by 3 and 5mm respectively? TIA
Laurente
Laurente