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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Starting Problem - Series 'C' BIG Single
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<blockquote data-quote="Jez Nemeth" data-source="post: 158137" data-attributes="member: 3871"><p>Thinking be a pain to get at those welds now, deep inside the ESA -sprocket is Cast iron, Pulley is Mild and 1 1/2" thick -took some carving out.</p><p></p><p>If was to re-do, would start again with version 2 and get a professional not using a 1920's Drummond Barrel Lathe run off a Zanussi washing machine motor to do the parts machining -not 100% happy with the accuracy of rotation, may be my eye but there's a slight wobble there despite wrapping the welds in ceramic wool while cooling, and redhot pre-heating, always going to be some distortion joining pig iron and steel -unavoidable -it's pretty good, but not perfect.</p><p></p><p>Alloy pulley be here in 2 weeks and may be better allround for this beasty...starting and running... convinced it does need to be accurate as humanly possible and have the full 70lbs holding it together.</p><p></p><p>H&S staff look away now...</p><p></p><p>[ATTACH=full]50616[/ATTACH]</p></blockquote><p></p>
[QUOTE="Jez Nemeth, post: 158137, member: 3871"] Thinking be a pain to get at those welds now, deep inside the ESA -sprocket is Cast iron, Pulley is Mild and 1 1/2" thick -took some carving out. If was to re-do, would start again with version 2 and get a professional not using a 1920's Drummond Barrel Lathe run off a Zanussi washing machine motor to do the parts machining -not 100% happy with the accuracy of rotation, may be my eye but there's a slight wobble there despite wrapping the welds in ceramic wool while cooling, and redhot pre-heating, always going to be some distortion joining pig iron and steel -unavoidable -it's pretty good, but not perfect. Alloy pulley be here in 2 weeks and may be better allround for this beasty...starting and running... convinced it does need to be accurate as humanly possible and have the full 70lbs holding it together. H&S staff look away now... [ATTACH type="full" alt="image (96).jpg"]50616[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Starting Problem - Series 'C' BIG Single
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