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Old 02-28-2018, 08:09 AM
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longranger longranger is offline
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Location: 45G, Brighton, MI
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Originally Posted by mike newall View Post
Gosh this thread is meandering like Ole Miss !


Mags - It is a Service Bulletin... Service bulletins are advisory and not mandatory. If the mag is not showing any issues, no mag drop etc then carry on. That said, at the rate most of us put hours on our motors, 500 hours will take many years ! Anyhow, we are all modern thinking futurists so should be on electronic ignition or EFI by now surely ? Support your friendly Texan and Cannuck .

At risk of pushing this thread even further off track, the only mag failure I ever had was one that checked good in the morning but was dead on the next run up that afternoon. I donít recall precisely, but it was somewhere in the neighborhood of 500 hours since overhaul when it failed. Only advisory or not, if I was running two mags Iíd keep at least one under the 500-hour recommendation.
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Old 03-11-2018, 07:00 PM
douglassmt douglassmt is offline
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Location: Missoula, MT
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Default Tach or Hobbs?

Dumb question, but on all these hours do you typically use Tach time or Hobbs? Since our modern EFISs track both, and there is a decent difference, 15% or so.
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Old 03-17-2018, 12:48 AM
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RV7A Flyer RV7A Flyer is offline
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Location: US
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Originally Posted by douglassmt View Post
Dumb question, but on all these hours do you typically use Tach time or Hobbs? Since our modern EFISs track both, and there is a decent difference, 15% or so.
I use Hobbs for everything but the mags (which I just had in for the 500 hour said they looked good as new ).
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Old 03-17-2018, 04:51 AM
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mike newall mike newall is offline
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Tacho minus 10% into the airplane logs, tacho for flying logbook. All in decimal hours so you can add it up easily.
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