mjr
Comfy armchair to one person & a plank to the next
- Location
- mostly Norfolk, sometimes Somerset
But also, you don't mind running the chain and cogs to near destruction so much (and you can much more than on a derailleur) when a rear sprocket is three quid and chainring twenty.Mm, so yes it's a bike.
Another mm - if the sprocket (singular) and chain only need changing every few years you surely can't be riding it that much. Either that or it is running at less than optimum efficiency. I accept of course that on a fixie the chain is not subjected to sideways flexing.