A "chain stretch" question?
I am in charge of a fleet of adaptive cycles and one of those is a Van Ramm VeloPlus3. It's an adaptive cycle that has a platform on the front for a wheelchair.
The gearing is a Shimano Nexus 8 gear hub. This means that there is only one chain-ring by the pedals and one cog on the hub.
What would be the chain wear limit at which the chain would need to be replaced?
0.5%, 0.75% or 1%?.
I think the maximum allowed elongation is 1%. Am I right or wrong?