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Cycle computer from Wilko used as Rev counter

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The Merry Miller	26/08/2011 13:23:08
484 forum posts 97 photos	I know this was dicussed some time ago but I can't find the original thread. After fitting the AS-11G cycle computer, did anybody finally establish what the RPM range was? The instructions quote up to 300 rpm which is inadequate for a lathe or mill. I need to know before I take the item back to Wilko's.
Roderick Jenkins	26/08/2011 14:54:44
2376 forum posts 800 photos	I've had mine up to 3200 rpm. The resolution is quite poor at this speed, it goes up in steps of 20 or 30 rpm but I don't consider that to be an issue, the resolution is quite good enough for me. cheers, Rod
Michael Cox 1	26/08/2011 18:52:07
555 forum posts 27 photos	I have checked mine against a commercial hand held photo reflective tachometer and it is accurate up to at least 2200 rpm (the max speed of my lathe). Mike
The Merry Miller	26/08/2011 19:34:19
484 forum posts 97 photos	Thanks for that info lads, I'll set mine up over the weekend. Len P.
The Merry Miller	27/08/2011 15:04:50
484 forum posts 97 photos	Well it was all set up today and for the benefit of those lucky people with a Tom Senior M1 mill with a seperate vertical head with quill feed these are the readings I obtained. The drive motor was O.5 HP 4pole and 1420 nominal RPM. The head had a four step poly-vee drive and the readings were taken after 15 sec wait for stabilisation at each step. Results in RPM: 280 500 900 1680 Thanks to those who recommended the Wilko AS-11G cycle computer. Len P.

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