Optical Tachometer
07-22-2008 | 09:55 AM
#1
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From: BelvedereKent, UNITED KINGDOM
Optical Tachometer
I've been looking at some adverts for Optical Tach's - Non Contact Tach's that have a mention of reflective strips.
Are these OK with model engines? Presumably one MUST be fitted to EACH blade to avoid imbalance?
Any comments please.
old git - - - - aka John L.
Are these OK with model engines? Presumably one MUST be fitted to EACH blade to avoid imbalance?
Any comments please.
old git - - - - aka John L.
07-22-2008 | 02:33 PM
#2
Senior Member
RE: Optical Tachometer
Most tachs we use are non-contact, and register light fluctuations. There is no need for reflective strips.
If the tach does need them, two strips are well balanced, but a single will do as well. You may get half or double rpm readings though, depending on the tach setup.
If the tach does need them, two strips are well balanced, but a single will do as well. You may get half or double rpm readings though, depending on the tach setup.
