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Jig to Hold Head in Lathe
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<blockquote data-quote="oexing" data-source="post: 153537" data-attributes="member: 1493"><p>Ouch, that looks too rough for me, just circular ground. Look at any needle or roller bearing inner race for suitable finish, that is my orientation about surface quality - no surface test equipment at home. In your place I´d do a lapping job on this conrod, but then it will be oversize for the rest of the bigend set you got. A used conrod will show polished surface where the rollers go, so I don´t think this to be a factor for skidding rollers. As to skidding there, it will be in no load areas, so no problem at all. There is some oil film for this reason. There is heavy skidding in another place with high load in an engine: The cam-and-follower assembly sees high skidding at high loads , is allright with decent oil supply, even though there is no rolling element between components. No, skidding is not a headache for me in needle or roller bearings, but I would not accept that Manx rod finish, reason for returning it.</p><p></p><p> Vic</p></blockquote><p></p>
[QUOTE="oexing, post: 153537, member: 1493"] Ouch, that looks too rough for me, just circular ground. Look at any needle or roller bearing inner race for suitable finish, that is my orientation about surface quality - no surface test equipment at home. In your place I´d do a lapping job on this conrod, but then it will be oversize for the rest of the bigend set you got. A used conrod will show polished surface where the rollers go, so I don´t think this to be a factor for skidding rollers. As to skidding there, it will be in no load areas, so no problem at all. There is some oil film for this reason. There is heavy skidding in another place with high load in an engine: The cam-and-follower assembly sees high skidding at high loads , is allright with decent oil supply, even though there is no rolling element between components. No, skidding is not a headache for me in needle or roller bearings, but I would not accept that Manx rod finish, reason for returning it. Vic [/QUOTE]
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Jig to Hold Head in Lathe
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