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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Adjusting magneto
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<blockquote data-quote="chankly bore" data-source="post: 26224" data-attributes="member: 317"><p>"A good magneto will fire perfectly between the limits of .010-in. and .014-in.gap measurement. If a notable increase is gained by,say,the wider gap, check the actual timing, then reset the gap to the correct figure of .012-in. and re-time the magneto to the same figure." Tuning for Speed PEI. See the Chapter on "Ignition Topics" for the right way to time the magneto.Incidentally,increasing the gap makes the spark happen earlier,i.e. more advance.My timing equipment is one of those little probes with a 12v bulb and a lead and crocodile clip-we don't have alligators in Australia;plus some insulating tape around the contact breaker centre screw. Then a piston stop and a degree wheel. Which ever way you do it,keep the method the same every time, then you will know where you have been and where you are now.PEI says you can alter the gap one flat at a time on a "suck it and see" basis. Cheers,F5AB/2A/7945 since 1970</p></blockquote><p></p>
[QUOTE="chankly bore, post: 26224, member: 317"] "A good magneto will fire perfectly between the limits of .010-in. and .014-in.gap measurement. If a notable increase is gained by,say,the wider gap, check the actual timing, then reset the gap to the correct figure of .012-in. and re-time the magneto to the same figure." Tuning for Speed PEI. See the Chapter on "Ignition Topics" for the right way to time the magneto.Incidentally,increasing the gap makes the spark happen earlier,i.e. more advance.My timing equipment is one of those little probes with a 12v bulb and a lead and crocodile clip-we don't have alligators in Australia;plus some insulating tape around the contact breaker centre screw. Then a piston stop and a degree wheel. Which ever way you do it,keep the method the same every time, then you will know where you have been and where you are now.PEI says you can alter the gap one flat at a time on a "suck it and see" basis. Cheers,F5AB/2A/7945 since 1970 [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Adjusting magneto
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