Brought an m6l 2nd hand about 2 years ago. Not sure how old it is but it's got the Sachs spectra hub. Regularly greased the bearings, cleaned the chain and pumped the marathon plusses up to 100psi. Nether had anything fail apart from the right crankarm coming away from the front cog one day climbing a stupidly steep hill in Yorkshire. I replaced it with a brompton crank an pray it doesn't happen again. At Least there's no crossbar on the brompton!!!
Brought an m6l 2nd hand about 2 years ago. Not sure how old it is but it's got the Sachs spectra hub. Regularly greased the bearings, cleaned the chain and pumped the marathon plusses up to 100psi. Nether had anything fail apart from the right crankarm coming away from the front cog one day climbing a stupidly steep hill in Yorkshire. I replaced it with a brompton crank an pray it doesn't happen again. At Least there's no crossbar on the brompton!!!