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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
New ESA Design
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<blockquote data-quote="oexing" data-source="post: 91083" data-attributes="member: 1493"><p>Tim,</p><p>you have pinpointed some trouble spots and made clear the limitations of the drawing dept. , unforunately nobody here seems to have seen the new design so we have to draw guesses on the effectiveness. Sorry for repeating myself, the big point is to get some real progressive damping into the design to stop the EAS from bashing onto its stops, be that the springs or the end plate. No tweaking the basic shape as it still is - presumably- will help here so we will no doubt see more broken springs and broken chains with drastic consquences. </p><p> The BMW shape does not do a hard stop, there is definitely the very progressive deceleration of motion under high loads and you bet it does its job well since the fifties into the nineties I think. The BMWs have no chains in drives anywhere, all gears, so this ESA in the gearbox input shaft does a great job no doubt! </p><p> The bad thing with the flat lobes in the Vincent is really the shock impulse down the chain that breaks it. I bet it would break a belt drive easily as well if it was used there. NO ESA would be easier on the drives than bashing components ! When you look at my photos and see dimensions of BMW type and my modded HRD parts, BMW diameters a lot smaller!! , what do you really think: Do the three lobes break before the chain snaps ? Add up all cross sections of one chain link and add up the three lobes and compare . I would not be able to do the mathematics, was a bright 2 Watt bulb at that all my life, but my guts tell me there is not nearly a problem . Two lobes in the BMW on a smaller radius never ever had a problem , up into the 1000 cc Twins with 70 hp. </p><p> Vic</p><p>[ATTACH=full]19603[/ATTACH][ATTACH=full]19604[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 91083, member: 1493"] Tim, you have pinpointed some trouble spots and made clear the limitations of the drawing dept. , unforunately nobody here seems to have seen the new design so we have to draw guesses on the effectiveness. Sorry for repeating myself, the big point is to get some real progressive damping into the design to stop the EAS from bashing onto its stops, be that the springs or the end plate. No tweaking the basic shape as it still is - presumably- will help here so we will no doubt see more broken springs and broken chains with drastic consquences. The BMW shape does not do a hard stop, there is definitely the very progressive deceleration of motion under high loads and you bet it does its job well since the fifties into the nineties I think. The BMWs have no chains in drives anywhere, all gears, so this ESA in the gearbox input shaft does a great job no doubt! The bad thing with the flat lobes in the Vincent is really the shock impulse down the chain that breaks it. I bet it would break a belt drive easily as well if it was used there. NO ESA would be easier on the drives than bashing components ! When you look at my photos and see dimensions of BMW type and my modded HRD parts, BMW diameters a lot smaller!! , what do you really think: Do the three lobes break before the chain snaps ? Add up all cross sections of one chain link and add up the three lobes and compare . I would not be able to do the mathematics, was a bright 2 Watt bulb at that all my life, but my guts tell me there is not nearly a problem . Two lobes in the BMW on a smaller radius never ever had a problem , up into the 1000 cc Twins with 70 hp. Vic [ATTACH=full]19603[/ATTACH][ATTACH=full]19604[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
New ESA Design
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