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Message
The Sparkplug Attention Getter (SAG) will cause a
lost of around 300 rpm in an NA engine - don't know about a turbo. If it
is the SAG then a change of spark plugs will cure it - so a fairly easy
check. The SAG is intermittent and continues to get worst and is most
likely to happen when you need to power most. It generally occurs on only
one rotor at a time and you (well, you can't) that the EGT of the effected
chamber drops, however, it can happen on both if ignored. I lost 500 rpm
on takeoff one hot day when both rotors decided to SAG at the same time.
Its my suspicion that its the Lead Plugs.
But, glad you got another flight.
Precautionary landings on a runway is not a bad thing - beats the
alternative. Hang in there, John, we all went though similar trials and
tribulations.
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
Sent: Monday, May 31, 2004 11:55 AM
Subject: [FlyRotary] 5000 ft - AGL?
Flight # 7 took place early this morning. There's a
full (4 page) write-up on my web site at the end of chapter 29. Here's a quick synopsis:
No more turbo
pipe problems. Lots of uncommanded boost. 0.8 hrs added. Everything went well
for the first 35 minutes, then I think I may have experienced my first case of
the famous Attention Getting Lag (AGL) that Ed, Tracy and Perry often talk
about. I did another precautionary landing. After landing the
power was back to normal. Go figure.
Just
for once - I'd like to have the opportunity to land this thing with the option
to go around if I get it wrong. 
John Slade (considering buying an EM2 and
asking for help)
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