Chainline
This was complicated. The chain wraps around 2 pulleys between the cranks & wheelhub. Their purpose is to direct the chain down the line of the Forks to permit the forks to steer (the chain will twist between the pulleys & wheelhub during steering). In practice this varies depending on which gear it's in & degree of steer. This was the final mounting points I settled on before fixing the pulleys in position.
Chainline
This was complicated. The chain wraps around 2 pulleys between the cranks & wheelhub. Their purpose is to direct the chain down the line of the Forks to permit the forks to steer (the chain will twist between the pulleys & wheelhub during steering). In practice this varies depending on which gear it's in & degree of steer. This was the final mounting points I settled on before fixing the pulleys in position.