Off topic.<br><br>I came across this item describing how to use a cycle speedometer as a rev counter.<br><a href="http://www.homemetalshopclub.org/news/jun02/jun02.html#tachometer">http://www.homemetalshopclub.org/news/jun02/jun02.html#tachometer</a><br>
The web site is a mine of information for anyone interested in making things, casting, machining, projects, tools, tricks, stories<br>Don't click the link unless you have a few minutes to spare...<br>
<a href="http://www.homemetalshopclub.org">http://www.homemetalshopclub.org</a><br><br>Richard<br>