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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Series D timing advice
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<blockquote data-quote="macvette" data-source="post: 25546" data-attributes="member: 262"><p>Hi,</p><p>Thanks Bill and hello Dave haven't heard from you lately. I decided to check my timing mainly because my pipes are blueing but I also want to replace the cast exhaust nuts with some bronze ones which are a better fit in the heads so it seemed a good idea to kill two birds with one stone. The bike starts easily on the previous setting and seems to run OK but since I'm running in on pretty small throttle opennings and generally sticking to no more that 60 mph in top, I can't really tell but I feel it should be a little smoother.</p><p>The books I am using are "Know Thy Beast" and "Richardson" and I decided to check the timing because KTB states that too much retard causes blueing. Richardson also says that the static timing should be 4 degrees BTDC on the rear cylinder fully retarded which equates to 38 to 40 degrees fully advanced ( I'm quoting here). I have picked up from a number of sources including local Vincent riders that 34 degrees BTDC seems to be a good setting for modern petrol. Anyway, I don't want to have too much advance so having previously set the timing to 34 degrees BTDC on full advance which on my bike equates to a static timing (measured) of 5 degrees ATDC, I have set the static timing to 0 degrees BTDC and will see how it goes. I think this will give me 39 degrees fully advanced.</p><p>By the way Dave I had a pm from another series D guy in British Columbia who had picked up my seat clip tip and he was pleased with the result.</p><p></p><p>Regards Mac</p></blockquote><p></p>
[QUOTE="macvette, post: 25546, member: 262"] Hi, Thanks Bill and hello Dave haven't heard from you lately. I decided to check my timing mainly because my pipes are blueing but I also want to replace the cast exhaust nuts with some bronze ones which are a better fit in the heads so it seemed a good idea to kill two birds with one stone. The bike starts easily on the previous setting and seems to run OK but since I'm running in on pretty small throttle opennings and generally sticking to no more that 60 mph in top, I can't really tell but I feel it should be a little smoother. The books I am using are "Know Thy Beast" and "Richardson" and I decided to check the timing because KTB states that too much retard causes blueing. Richardson also says that the static timing should be 4 degrees BTDC on the rear cylinder fully retarded which equates to 38 to 40 degrees fully advanced ( I'm quoting here). I have picked up from a number of sources including local Vincent riders that 34 degrees BTDC seems to be a good setting for modern petrol. Anyway, I don't want to have too much advance so having previously set the timing to 34 degrees BTDC on full advance which on my bike equates to a static timing (measured) of 5 degrees ATDC, I have set the static timing to 0 degrees BTDC and will see how it goes. I think this will give me 39 degrees fully advanced. By the way Dave I had a pm from another series D guy in British Columbia who had picked up my seat clip tip and he was pleased with the result. Regards Mac [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Series D timing advice
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