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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Simple Rev counter, is there one ?
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<blockquote data-quote="Gary Gittleson" data-source="post: 175195" data-attributes="member: 3625"><p>I tried several of those cheap Chinese ones. One of them sort of worked for a very short time. My bike is a D with the distributor, so I used the pulses from the primary circuit to drive it. It would show revs up to maybe 1500 and then either swing to infinity or drop to zero. After numerous attempts to get it to work, I just gave up.</p><p></p><p>On the other hand, I have a small diesel tractor which had a dead mechanical tach. That's an important item on a tractor, so I found one that can use various inputs, including input from the alternator. I had to make a connection to one of the diodes in the alternator for that. Then I needed to calibrate it. To do that I got one of those cheap strobe-light tachometers, put a bit of reflective tape on the crankshaft pulley, set the revs to 1500 and set the tachometer in the tractor. It's been working fine ever since. The tach includes an hour meter as well. It's been a while, but I'm pretty sure this is it: <a href="https://www.ebay.com/itm/164494394224?hash=item264ca14370:g:o3QAAOSwVb5fpRac&amdata=enc%3AAQAIAAAAwAQ0%2Fi7RnupTLy%2BSHEo1jxdabOf4HnVlVyNKwcCVACyxVoS2bVzcTYGZgkRewlGn%2FyRUAUtUd1UluERPlqZuoeIxGuOUt%2B7%2Fbep7KT9Xzy55AVLz8%2Bp4d9dBrEBCTIVPQm76qhdhsHFvq4f%2BNF19JNdfovYskhio5Gk0bnuFdc6LmDFNspvstNhGlPK6qjGf81CcsKQ28BPSSzkAiWhQ1cqu5MlOfVUKm5i1GVJKl1xyGzjKQWR2jkTKGd2G%2B3xsng%3D%3D%7Ctkp%3ABk9SR8q46oDFYg" target="_blank">https://www.ebay.com/itm/164494394224?hash=item264ca14370:g:o3QAAOSwVb5fpRac&amdata=enc:AQAIAAAAwAQ0/i7RnupTLy+SHEo1jxdabOf4HnVlVyNKwcCVACyxVoS2bVzcTYGZgkRewlGn/yRUAUtUd1UluERPlqZuoeIxGuOUt+7/bep7KT9Xzy55AVLz8+p4d9dBrEBCTIVPQm76qhdhsHFvq4f+NF19JNdfovYskhio5Gk0bnuFdc6LmDFNspvstNhGlPK6qjGf81CcsKQ28BPSSzkAiWhQ1cqu5MlOfVUKm5i1GVJKl1xyGzjKQWR2jkTKGd2G+3xsng==|tkp:Bk9SR8q46oDFYg</a></p></blockquote><p></p>
[QUOTE="Gary Gittleson, post: 175195, member: 3625"] I tried several of those cheap Chinese ones. One of them sort of worked for a very short time. My bike is a D with the distributor, so I used the pulses from the primary circuit to drive it. It would show revs up to maybe 1500 and then either swing to infinity or drop to zero. After numerous attempts to get it to work, I just gave up. On the other hand, I have a small diesel tractor which had a dead mechanical tach. That's an important item on a tractor, so I found one that can use various inputs, including input from the alternator. I had to make a connection to one of the diodes in the alternator for that. Then I needed to calibrate it. To do that I got one of those cheap strobe-light tachometers, put a bit of reflective tape on the crankshaft pulley, set the revs to 1500 and set the tachometer in the tractor. It's been working fine ever since. The tach includes an hour meter as well. It's been a while, but I'm pretty sure this is it: [URL]https://www.ebay.com/itm/164494394224?hash=item264ca14370:g:o3QAAOSwVb5fpRac&amdata=enc%3AAQAIAAAAwAQ0%2Fi7RnupTLy%2BSHEo1jxdabOf4HnVlVyNKwcCVACyxVoS2bVzcTYGZgkRewlGn%2FyRUAUtUd1UluERPlqZuoeIxGuOUt%2B7%2Fbep7KT9Xzy55AVLz8%2Bp4d9dBrEBCTIVPQm76qhdhsHFvq4f%2BNF19JNdfovYskhio5Gk0bnuFdc6LmDFNspvstNhGlPK6qjGf81CcsKQ28BPSSzkAiWhQ1cqu5MlOfVUKm5i1GVJKl1xyGzjKQWR2jkTKGd2G%2B3xsng%3D%3D%7Ctkp%3ABk9SR8q46oDFYg[/URL] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Simple Rev counter, is there one ?
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