just overlap both ends whilst sitting on both the chain ring and cog, you can guestimate where you need to break/join it, i go roughly in the middle of the drop-outs, you can always remove another coupla links if need be. no such thing as an optimum lenght,
just overlap both ends whilst sitting on both the chain ring and cog, you can guestimate where you need to break/join it, i go roughly in the middle of the drop-outs, you can always remove another coupla links if need be. no such thing as an optimum lenght,