Wheel bearing problem...

---- · World Chat Champion Joined: 29 Sep 2006 Karma :

The bike is a cpi50sm.
Just fitted some new rear wheel bearings and they literally just slotted into place by hand Shocked

The old one actually fell out when i removed he wheel!
This is just on the sprocket side btw.So what's my options?
Is it possible to have the wheel machined out then fit a bearing with a bigger outer diamater to match or should i just look for a replacement wheel?

Thanks
Dave
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DRZ-400sm

kt · Nitrous Nuisance Joined: 21 Jun 2010 Karma :

This problem is very common, I have solved this by using a small sharp metal chisel and cutting small straight lines into the alloy bearing housing the whole way round from top to bottom, this will allow the bearing to sit firmly in the wheel . You will not have to buy a new wheel.

Teflon-Mike · tl;dr Joined: 01 Jun 2010 Karma :

Chinese bike? Sounds about right!
Loctite!
They do a number of compounds for screw & nut locking, pretty sure there is one for bearings too.
Remove brg, give it a squib of loctite around the rim, pop it back in.
anearobic adhesive will set and keep it from rotating in the housing, spacers on spenidle and the nuts should keep it in axially.
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ZRX61 · Victor Meldrew Joined: 05 Nov 2003 Karma :

ms51ves3 · Super Spammer Joined: 08 Jun 2007 Karma :

LeeR · World Chat Champion Joined: 12 Dec 2006 Karma :

You could try a Chicago Rawhide (SKF) Speedi Sleeve (opens pdf catalogue) as supplied by the likes of Brammer.
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kt · Nitrous Nuisance Joined: 21 Jun 2010 Karma :

Zrx61, the product you mention in my experience is a waste of money and is only suiable for snug fitting bearings. In this case the thermal expansion of the wheel which has caused the problem in the first place cannot be cured by a product that has No expansion tolerance. The method I suggested costs nothing and I have always found it to be a superior job.

---- · World Chat Champion Joined: 29 Sep 2006 Karma :

Cheers for the reply's.

Supermono - I was a bit unsure about trying your method as it sounds a bit pikey,but even the local bike garage advised me to do that aswell (using loctite aswell) so it's worth a shot Thumbs Up

Getting a price on a new wheel aswell though just incase Very Happy

(i'm not paying so it's all good Laughing

)

Cheers
Dave
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DRZ-400sm

kt · Nitrous Nuisance Joined: 21 Jun 2010 Karma :

Its a bit difficult to describe without using pictures but that method has served me well for many years and by all means use the loctite as well,.
p.s ........us Irish always use pikey methods lol Laughing