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| Subject: And Another Thing! | |
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Author: Captain Pulsar |
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Date Posted: Fri, Mar 08 2013, 20:23:14 GMT In reply to: Bob P 's message, "Misbehaving rev counter." on Thu, Mar 07 2013, 10:52:37 GMT Another way to check is to obtain/borrow an optical tacho. I borrowed one from my inspector. A bit of sticky paper or similar stuck on the back of a propellor blade should be enough to reflect sufficient light to read propellor RPM during a flight by sellotaping the instrument on the combing in the cockpit and thus you can read propellor RPM throughout the full rev range during flight. Assuming you have a 2 to 1 reduction gearbox, you can calculate what actual prop speed you are getting and compare this with the Tachometer reading in real time. If you have a 2.28 reduction, the sums will be more difficult to do in your head, but I'm sure you can manage it. Cheers Rob [ Next Thread | Previous Thread | Next Message | Previous Message ] |
| Subject | Author | Date |
| Tacho Probs | Alan Gill | Sun, Mar 10 2013, 11:58:23 GMT |