Hi there, i was once spinning my wheel to check if my brakes were rubbing and ihad my fingers on the chain, at this piont i wasnt aware that i had them on the chain so i spun the wheel farley quickley and the chain took my finger straight on to my freewheel, ouch it killed i had to pull my finger off the tooth on the freewheel i ran home and cleaned it up now i am left with i nice spasticated finger nail