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aurbo(at)ak.net
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 Posted: Wed Jan 03, 2007 9:12 am Post subject: tachometer markings |
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Hello,
I am buying a new tachometer for the RV-9 I am building and the instrument shop wants to know where to put the appropriate markings for yellow and red lines on the face.
How do I determine that data?
The engine is a Lycoming O-320 E3D.
thanks,
Mike
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BPETERS2(at)bak.rr.com
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| Posted: Thu Jan 04, 2007 12:09 am Post subject: tachometer markings |
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Mike,
I would assume, probably wrongly, that Lycoming should provide that information. I am also building an RV-9A and would be interested in knowing what you find out. Hopefully someone will have the info and post it. How far along are you? I am just starting the fuselage and am working on the firewall bulkhead. I left my wing bottom skins off pending decisions about wiring, autopilot, etc. How did you determine which model of the various O-320’s you wanted? Thanks.
Bruce
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jc(at)INFONET.COM.BR
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| Posted: Thu Jan 04, 2007 1:50 am Post subject: tachometer markings |
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Hy there:
Due to some vibrations couplings it is mandatory to consult the prop maker about RPM
limitations, too.
Usually we could put a top red at 2700, botton yellow at 2600, botton green at 600,
yellow up to zero.
JC - Aracaju - Brasil
RV-9A
PU-JCI
Flying 180 hs
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aurbo(at)ak.net
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| Posted: Thu Jan 04, 2007 7:17 am Post subject: tachometer markings |
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JC,
Thank you for the information. It confirms what I was able to find from
other sources.
Mike Ice
Anchorage, Alaska
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aurbo(at)ak.net
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| Posted: Thu Jan 04, 2007 7:34 am Post subject: tachometer markings |
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Bruce,
I found a source yesterday that pretty much was right in line with the information that JC provided concerning the Tach.
I have the fuselage and all of the major components completed except the wiring and canopy. I have the firewall forward and finish kit on order and they should be here around the end of January. I am trying to complete the wiring before then so I can start to work on the canopy.
Price and availability were the determining factors for deciding on the engine I ended up with. I knew I wanted a Lycoming O-320 of some type and I desired a wide deck model with a conical mount and then just started looking for one.
I was lucky to find a unit that was just rebuilt by a local shop. Unfortunately for the previous owner before it could be reinstalled in his Piper Warrior a Moose decide to wing walk on his airplane.
I am finding the wiring process to be very educational. I started out not know anything and scared to try. I went with the Van's wire harness and now have completely removed it and I am now installing the Z-11 system from the Aeroelectric book.
Mike
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bill(at)repucci.com
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| Posted: Thu Jan 04, 2007 7:09 pm Post subject: tachometer markings |
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Mike,
Just love to be a smart A$$ so...
Why not go with an electronic EMS? Then you can program your tack to read whatever you want.
Bill
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aurbo(at)ak.net
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| Posted: Thu Jan 04, 2007 8:54 pm Post subject: tachometer markings |
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Bill,
Not sure what an EMS is but the reason I didn't get it is probably $$. I gave the numbers to the instrument shop and when I get the new tach all the little lights will glow the proper colors.
Did you get an EMS?
Mike
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