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cylinder break in

 
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deej(at)deej.net
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PostPosted: Thu Dec 02, 2010 1:39 pm    Post subject: cylinder break in Reply with quote
Hi all,
Lycoming Service Instruction 1427B indicates that you should "After
establishing cruise altitude, reduce power to approximately 75% and
continue flight for 2 hours. For the second hour, alternate power
settings between 65% and 75% power per operator’s manual."

Can anyone point me at a chart that tells me what RPM is equal to 65%
and 75% power for a Grumman AA1B with an O-235-C2C, presuming a standard
temperature and pressure day, at 3000 feet and at 5000 feet altitude?

Thanks,

-Dj

--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/

Please use Netiquette Guidelines http://tools.ietf.org/html/rfc1855
Kindly TRIM your email replies and post AFTER the relevant text

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N9681L(at)dicombox.net
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PostPosted: Mon Dec 06, 2010 9:02 am    Post subject: cylinder break in Reply with quote
That's in the POH; figure 10 for the TR2, figure 11 for the Trainer.

Curt

On 12/2/2010 1:36 PM, Dj Merrill wrote:
Quote:


Hi all,
Lycoming Service Instruction 1427B indicates that you should "After
establishing cruise altitude, reduce power to approximately 75% and
continue flight for 2 hours. For the second hour, alternate power
settings between 65% and 75% power per operator’s manual."

Can anyone point me at a chart that tells me what RPM is equal to 65%
and 75% power for a Grumman AA1B with an O-235-C2C, presuming a standard
temperature and pressure day, at 3000 feet and at 5000 feet altitude?

Thanks,

-Dj



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deej(at)deej.net
Guest
PostPosted: Mon Dec 06, 2010 3:15 pm    Post subject: cylinder break in Reply with quote
On 12/6/2010 11:59 AM, Curt Johnson wrote:
Quote:

<N9681L(at)dicombox.net>

That's in the POH; figure 10 for the TR2, figure 11 for the Trainer.

Thanks, Curt. Someone else pointed that out to me last week, and I was
a bit embarrassed that I'd forgotten that was in the owner's manual.
I've started the break-in of the cylinders - so far, so good! Smile

-Dj

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