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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
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<blockquote data-quote="Bart" data-source="post: 128548" data-attributes="member: 4781"><p>Yes indeed, now we'll have to figure out the springrate & preload.</p><p>The ESA should move back and forth at least a bit to be functional, but shouldn't go to full lock too soon.</p><p></p><p>So to set ourselves some boundary conditions, we thought the maximum design torque is less than what the prim. chain will yield at or the crankshaft (ET17/2) will rotate in the flywheel from, i.e., other things will break before the ESA runs in it's maximum 'compression'.</p><p>And a value for the 'low end' of the peak torque we can find from engine torque.</p><p>Because the torque is delivered in a pulsating manner, the peak torque the ESA will encounter during typical driving will be two times the nominal torque of the engine.</p><p></p><p>Attached are 1) a picture with the cross-section of the designed cams, showing every 'surface' pointing toward the center of rotation and 2) the curvature of the cam profile, showing an initial ramp of 10 degrees, progressively increasing to 72 degrees at maximum curvature. The original is about 45 degrees, with no initial ramp angle (essentially, it's a round profile).</p><p></p><p>Any ideas, experiences or thoughts on this are dearly appreciated!</p></blockquote><p></p>
[QUOTE="Bart, post: 128548, member: 4781"] Yes indeed, now we'll have to figure out the springrate & preload. The ESA should move back and forth at least a bit to be functional, but shouldn't go to full lock too soon. So to set ourselves some boundary conditions, we thought the maximum design torque is less than what the prim. chain will yield at or the crankshaft (ET17/2) will rotate in the flywheel from, i.e., other things will break before the ESA runs in it's maximum 'compression'. And a value for the 'low end' of the peak torque we can find from engine torque. Because the torque is delivered in a pulsating manner, the peak torque the ESA will encounter during typical driving will be two times the nominal torque of the engine. Attached are 1) a picture with the cross-section of the designed cams, showing every 'surface' pointing toward the center of rotation and 2) the curvature of the cam profile, showing an initial ramp of 10 degrees, progressively increasing to 72 degrees at maximum curvature. The original is about 45 degrees, with no initial ramp angle (essentially, it's a round profile). Any ideas, experiences or thoughts on this are dearly appreciated! [/QUOTE]
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