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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Quieting ramps / Andrews Mk 2
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<blockquote data-quote="oexing" data-source="post: 178758" data-attributes="member: 1493"><p>Vincent pushrods are no stainless steel as stock but stainless would help a little with heat growth. What do you mean with alu rods for street use ? They got hardened ball ends pressed in, like the looong pushrod at top in the photo above. This is a Horex Regina 400 original. Second from top is a stainless pushrod from the /5 series BMWs , very heavy. They went to alu pushrods later, with quite long steel exstensions with ball ends pressed in - not my idea like these. Anyway these were in the 1000cc R 100 RS with 70 hp at 7000 rpm plus !! So my short alu rods are no more headache for me, you´d never kill them on any Vincent, there are other places that would go first by a long way. Just the way you assemble the engine is a bit different: You cannot drop them through the rocker adjuster thread like is common here. Instead once the cylinder is on the case you drop them onto the follower ball cups down there and with some wiggle put the head over the lot with the pushrod shrouds - easy. BUT clearance in the shrouds has to be made for the 10 mm tubes: The recesses for the shroud seal were machined offset from the ball cup in the followers - which nobody here has ever commented, was obviously never set right at the factory. So I made offset o-ring seal holders that moved the pushrod shrouds by one millimeter in the more suitable position to go with the followers - nice lathe job. </p><p></p><p> Vic</p></blockquote><p></p>
[QUOTE="oexing, post: 178758, member: 1493"] Vincent pushrods are no stainless steel as stock but stainless would help a little with heat growth. What do you mean with alu rods for street use ? They got hardened ball ends pressed in, like the looong pushrod at top in the photo above. This is a Horex Regina 400 original. Second from top is a stainless pushrod from the /5 series BMWs , very heavy. They went to alu pushrods later, with quite long steel exstensions with ball ends pressed in - not my idea like these. Anyway these were in the 1000cc R 100 RS with 70 hp at 7000 rpm plus !! So my short alu rods are no more headache for me, you´d never kill them on any Vincent, there are other places that would go first by a long way. Just the way you assemble the engine is a bit different: You cannot drop them through the rocker adjuster thread like is common here. Instead once the cylinder is on the case you drop them onto the follower ball cups down there and with some wiggle put the head over the lot with the pushrod shrouds - easy. BUT clearance in the shrouds has to be made for the 10 mm tubes: The recesses for the shroud seal were machined offset from the ball cup in the followers - which nobody here has ever commented, was obviously never set right at the factory. So I made offset o-ring seal holders that moved the pushrod shrouds by one millimeter in the more suitable position to go with the followers - nice lathe job. Vic [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Quieting ramps / Andrews Mk 2
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