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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Lipped Main Bearings
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<blockquote data-quote="greg brillus" data-source="post: 120043" data-attributes="member: 597"><p>The only advantage of a lipped bearing is the extra radial strength of the outer ring, the lip is of no use unless you do away with the ball race on the drive side outer. I have a shadow engine in the shop now that has lipped bearings on the drive and timing side main rollers.......they are in serviceable condition so they can stay there. I do not believe they are the original bearings, most likely from a triumph or BSA who knows. The stake marks are definitely there to hold the bearings on assembly, and yes you are probably correct in your views about this Vic........However, like many of the faults in these engines, we can come up with what we feel is a better method, it is worth remembering these engines have survived this long quite well, they are certainly not the weakest of engine designs I have seen, probably more a question of how to manufacture something in a very short period of time post war. Some of these bikes have had a very hard life and looked after by some with little mechanical knowledge, used and abused as it were........these bikes will definitely suffer from many issues.......the bikes that have been looked after well are quite remarkable really. You need to remember that you have time on your side to improve things as you go.........This was a luxury the factory did not have, having a small workforce and little spare funds to change things.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 120043, member: 597"] The only advantage of a lipped bearing is the extra radial strength of the outer ring, the lip is of no use unless you do away with the ball race on the drive side outer. I have a shadow engine in the shop now that has lipped bearings on the drive and timing side main rollers.......they are in serviceable condition so they can stay there. I do not believe they are the original bearings, most likely from a triumph or BSA who knows. The stake marks are definitely there to hold the bearings on assembly, and yes you are probably correct in your views about this Vic........However, like many of the faults in these engines, we can come up with what we feel is a better method, it is worth remembering these engines have survived this long quite well, they are certainly not the weakest of engine designs I have seen, probably more a question of how to manufacture something in a very short period of time post war. Some of these bikes have had a very hard life and looked after by some with little mechanical knowledge, used and abused as it were........these bikes will definitely suffer from many issues.......the bikes that have been looked after well are quite remarkable really. You need to remember that you have time on your side to improve things as you go.........This was a luxury the factory did not have, having a small workforce and little spare funds to change things. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Lipped Main Bearings
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