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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Rocker oil feed
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<blockquote data-quote="Marcus Bowden" data-source="post: 151142" data-attributes="member: 3287"><p>Well my handsome, I don't honestly know what you have there. The original ET100 had a 3/8" BSF thread under a 1/4" hexagon bolt with an up standing threaded portion about 1/2" high and in it was tapped a 1/4"bfs thread that held on a cupped banjo doing each rocker assembly in turn. The bottom part of the 3/8" bolt has the lower four threads turned off and this portion is located into the aluminium rocker block. This was all superseded in the mid 60's with a mod that was the same but the 3/8"bfs thread was all machined off the the lower portion was threaded with 1/4"bfs thread and a special top had nut fitted while the rocker pin was removed and the hole in the rocker block top opened out to 3/8". On assembly the rocker is fitted the ET100/1 being screwed into it. What you have taken a photo of I've no idea it doesn't even look usable.</p><p>bananaman.</p></blockquote><p></p>
[QUOTE="Marcus Bowden, post: 151142, member: 3287"] Well my handsome, I don't honestly know what you have there. The original ET100 had a 3/8" BSF thread under a 1/4" hexagon bolt with an up standing threaded portion about 1/2" high and in it was tapped a 1/4"bfs thread that held on a cupped banjo doing each rocker assembly in turn. The bottom part of the 3/8" bolt has the lower four threads turned off and this portion is located into the aluminium rocker block. This was all superseded in the mid 60's with a mod that was the same but the 3/8"bfs thread was all machined off the the lower portion was threaded with 1/4"bfs thread and a special top had nut fitted while the rocker pin was removed and the hole in the rocker block top opened out to 3/8". On assembly the rocker is fitted the ET100/1 being screwed into it. What you have taken a photo of I've no idea it doesn't even look usable. bananaman. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Rocker oil feed
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