Do some inner tubes have some sort of granular stuff in them? I've had a weird noise coming from my dynamo hub and spent a bit of time diagnosing it. It transpires it was the inner tube had quite a bit dry stuff inside and was "swooshing" around when I was riding or spinning the wheel in the stand. Never come across this before so I'm intriqued.
Do some inner tubes have some sort of granular stuff in them? I've had a weird noise coming from my dynamo hub and spent a bit of time diagnosing it. It transpires it was the inner tube had quite a bit dry stuff inside and was "swooshing" around when I was riding or spinning the wheel in the stand. Never come across this before so I'm intriqued.