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Old 05-03-2010, 07:25 PM
wildemere wildemere is offline
Motorized Bicycle Elite Member
Join Date: Feb 2008
Location: Newcastle
Posts: 269
Default Re: digital tachometer

Mr Moronic Kaos,

Most small single cylinder 4 strokes fire the plug every revolution, the same as a 2 stroke, the spark during the exhaust stroke is "wasted".

Some cars and most motorcycles do this as well, unless the ignition is on the cam timing.
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