I've been
experiencing a strange 'clicking' sound from the rear wheel when
wheeling the Skorpion out of the garage, but wasn't able to work out
what it was. Later, I started to hear a 'scraping' sound at low speed
(at higher speed the sound was probably lost in the wind noise). At
first I thought the 'scraping' sound might have been the brakepads, I
replaced them, but the noise continued.
I went for a run
today to test the bike and the scraping sound was getting louder, so
I took the back wheel out to investigate. When I removed the sprocket
carrier I put my finger into the centre and spun it and it felt very
rough as if a bearing had broken up. I have a spare sprocket carrier,
so fitted it and the 'clicking' noise had disappeared and the bike
rolled more easily. The weather had got considerably worse (wind and
rain), so I didn't have a chance to ride the bike, but I took the
sprocket carrier apart and look what I found!
This is the outer
bearing (part no: 18 in the diagram). The inner bearing was OK, but
had signs of rust, so water had got inside.
I've had this bike
for over 15 years and this is the first time I've had problems with
these bearings. They're a standard bearing available from bearing
suppliers, so I'll replace them both.
Worth checking if
you're planning any long summer trips.
I'd just finished writing this post when I checked what bearings I needed to order. Realised that they were 6204 - I'd ordered a pair of these by mistake when I'd meant to order 6203 bearings for a wheel!
***UPDATE***
I'd just finished writing this post when I checked what bearings I needed to order. Realised that they were 6204 - I'd ordered a pair of these by mistake when I'd meant to order 6203 bearings for a wheel!
What a coincidence, i just had the same problem on my recently bought skorpion sport. My outer bearing only has a small tear in the seal though. Thanks for the bearing info.
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