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Date: Mon, 16 Mar 2009 19:20:18 -0400
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From: "Art Bertolina" <artbertolina@earthlink.net>
References: <list-3548444@logan.com>
Subject: Re: [LML] Re: LOP vs ROP Climb: Time and Fuel Burn (LIVP)
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John
I attended the APS Seminar as well. For learning about
how my engine operates the best money I have ever spent. It has been a 
couple of years and probable should
take a refresher.
Art
----- Original Message ----- 
From: "John Schroeder" <jschroeder@perigee.net>
To: <lml@lancaironline.net>
Sent: Sunday, March 15, 2009 3:53 PM
Subject: [LML] Re: LOP vs ROP Climb: Time and Fuel Burn (LIVP)


> Art -
>
> They teach, in the APS Seminar, Wide Open Throttle (WOT) all the time and 
> vary the mixture in the LOP range and rpm for speed. They are having a 
> live seminar in early May in Ada, OK if anyone is interested. I highly 
> recommend it. IMHO, it is the most cost-effective insurance one can have 
> with respect to the care and running of your engine. You can also take it 
> on line. I have not done that one. George, Walter and John - all have 
> taken IO & TSIO 550's to factory recommended overhaul times and sometimes 
> beyond; with little or no cylinder problems. I may not be completely 
> accurate on this last statement, but close. Another point is that the 
> turbo temperature is a key indicator for setting and running LOP. I did 
> not have a turbo, so I did not pay close attention to this part of the 
> seminar.
>
> My apologies to Walter, George and John if I have mis-stated something 
> here. Just trying to get folks to your seminar. :-))
>
> John Schroeder
>
>
>
>
> On Sat, 14 Mar 2009 07:32:47 -0400, Art Bertolina 
> <artbertolina@earthlink.net> wrote:
>
>> Re: [LML] LOP vs ROP Climb: Time and Fuel Burn (LIVP)would like to hear 
>> what George or Walter could add to
>> this conversation. It was my understanding that higher RPM
>> is better for the engine, as long as the prop is not driving
>> engine
>> Art
>>   ----- Original Message -----
>>   From: Colyn Case at earthlink
>>   To: lml@lancaironline.net
>>   Sent: Thursday, March 12, 2009 4:30 PM
>>   Subject: [LML] Re: LOP vs ROP Climb: Time and Fuel Burn (LIVP)
>>
>>
>>   Chuck said,
>>   So, if you are going to reduce power, between MP or RPM, it is better 
>> to reduce MP since higher RPM keeps PP lower, at least that was their 
>> general conclusion, supported by engine shop experience.
>>
>>   I agree at high power settings for the reasons cited,  but once you 
>> get down to cruise power settings, if you are going to reduce power 
>> further, reducing rpm removes some friction component while reducing mp 
>> does not.  therefore you should get better mileage by lowering rpm.
>
>
>
>
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