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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Push rod tubes
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<blockquote data-quote="oexing" data-source="post: 122680" data-attributes="member: 1493"><p>Yes, get o-rings for this place. The great thing is with these, you don´t need to push down the pushrod tubes , the o-rings enable the tubes to move about in angle positions. So just unscrew the gland nuts , lower them to half height and pull off the head. The pushrod tubes can be moved about to clear the head recess. You´d have to shorten the tubes possibly so they don´t enter the smaller bore in the case recess. But then , no use for extra long tubes, just long enough for having the o-ring on them. Unless you have to revert to compression plates sometime later, so then you´d get new longer tubes - no big deal. </p><p> I made me alu pushrods 10 mm o.d. so had to have excentric o-ring adapters to get clearance in the engine case as the tube recesses in the case don´t align the positions of the rod ball cups in the followers. In consequence I cannot push down the tubes due to offset o-ring adapter but don´t have to do this. I can fit the heads even so as the tubes can move about angle-wise. </p><p></p><p> Vic</p><p></p><p>[ATTACH=full]35609[/ATTACH]</p><p></p><p>[ATTACH=full]35610[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 122680, member: 1493"] Yes, get o-rings for this place. The great thing is with these, you don´t need to push down the pushrod tubes , the o-rings enable the tubes to move about in angle positions. So just unscrew the gland nuts , lower them to half height and pull off the head. The pushrod tubes can be moved about to clear the head recess. You´d have to shorten the tubes possibly so they don´t enter the smaller bore in the case recess. But then , no use for extra long tubes, just long enough for having the o-ring on them. Unless you have to revert to compression plates sometime later, so then you´d get new longer tubes - no big deal. I made me alu pushrods 10 mm o.d. so had to have excentric o-ring adapters to get clearance in the engine case as the tube recesses in the case don´t align the positions of the rod ball cups in the followers. In consequence I cannot push down the tubes due to offset o-ring adapter but don´t have to do this. I can fit the heads even so as the tubes can move about angle-wise. Vic [ATTACH type="full"]35609[/ATTACH] [ATTACH type="full"]35610[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Push rod tubes
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