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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: 158276" data-attributes="member: 3871"><p>of course...thank you, sometimes I can be a complete muppet and miss the obvious...</p><p></p><p>High, 10:1 + ?? Not a clue, once the piston's up there's not much space in that head, but the central combustion space around the valves makes it difficult say, had to ensure what i was doing with the valves I was fitting was ok -didn't know if stuff had been altered from standard variation at all, all been gone over in that head, machined here and there beyond TP's original big-bore head unit -so had to check, measure everythang...and then there's that squish-band which adds to the whole compression picnic -so difficult to guesstimate -it's high, and that's why Bill's thoughts on raising revs on tick-over sounds about where it wants to be naturally.</p><p></p><p>Had no idea how it would behave on first start, pleasantly surprised that it is usable, trying to tame it further by lowering the tick rate is not the direction it clearly wants to go, to use a metaphor -the thing will never be a puppy, but an obedient sheepdog/bulldog be a good result to my thinking <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p></blockquote><p></p>
[QUOTE="Jez Nemeth, post: 158276, member: 3871"] of course...thank you, sometimes I can be a complete muppet and miss the obvious... High, 10:1 + ?? Not a clue, once the piston's up there's not much space in that head, but the central combustion space around the valves makes it difficult say, had to ensure what i was doing with the valves I was fitting was ok -didn't know if stuff had been altered from standard variation at all, all been gone over in that head, machined here and there beyond TP's original big-bore head unit -so had to check, measure everythang...and then there's that squish-band which adds to the whole compression picnic -so difficult to guesstimate -it's high, and that's why Bill's thoughts on raising revs on tick-over sounds about where it wants to be naturally. Had no idea how it would behave on first start, pleasantly surprised that it is usable, trying to tame it further by lowering the tick rate is not the direction it clearly wants to go, to use a metaphor -the thing will never be a puppy, but an obedient sheepdog/bulldog be a good result to my thinking ;) [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Starting Problem - Series 'C' BIG Single
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