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Unread 06-04-2008, 17:04
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Re: pic: Problem with IFI Wheels

Quote:
Originally Posted by RogerR View Post
actually, because of the way that they are mounted, the bolt on sprockets (if left unsupported) can create a fairly large load on the wheels. this cyclical loading can cause major problems. this used to be the main cause of failure among the skyway wheels (see also: 1902's 2006 exploding wheels), and while i'm not sure about the new kit wheels (they are much more robustly designed, as they have the bearings mounted farther apart), i've seen some pictures of failed wheels that look suspicious.

further more, if you at look both the sprockets available from ifi and am.biz, you'll notice that they both are made to accept a 3/8 in bore flanged bearing.
I wasn't being specific as to the locations and knowing Richardmcc2 from his posts i know he is knowledgeable enough to not put one bearing on a wheel, it was just a quick check.

having the sprocket bolted to the wheel with both bearings in the wheel does create a high stress cantilever that i can see being enough to round out that whole, especially if there were any nonconcentric sprockets in the drive to pulse the chain from tight to really tight. putting a bearing in the sprocket should stop it because if relieves the cantilever
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