if you tighten up the cog with a chainwhip and (im guessing the lockring is actually a BB ring) the lockring as long as hes easy on the back pedalling it should be ok for a while
@Ratboy started
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if you tighten up the cog with a chainwhip and (im guessing the lockring is actually a BB ring) the lockring as long as hes easy on the back pedalling it should be ok for a while