REFLECTOR: Running LOP

[Ron Brown]

My IO360 was built by Don George in Orlando and he used Airflow Performance
injectors.  Without any adjusting, my EGT's peaked within 0.3 GPH of each
other.  I run LOP regularly.  A confirmation of how even the burn is, I can
lean the engine to nearly cut-off and the engine runs smoothly - just a
reduction in power.

I have a Catto prop - and use this info that I got from one of the RV lists:

        RPM/100 plus MP = 48 is 75% power; 47 is 65%; 46 is 55%; 49 is 85%.

Using this, I regularly run LOP at lower altitudes and typically get 140 kts
TAS with only 6.5 GPH.  This is my puttering-around-the-area cruise.



----- Original Message ----- 
From: "Dave Philipsen" <velocity at davebiz.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Wednesday, December 13, 2006 6:09 PM
Subject: Re: REFLECTOR: Running LOP


> One clarification of what Scott wrote (below):  Maximum *safe
> lean-of-peak* power will be around 50 LOP but *absolute* maximum power
> (according to Deakin) is about 50 ROP.  Having said that, the only time
> you can run 50 ROP safely would be at altitudes of about 8000+ feet or
> at a throttle setting that reduces engine output to around 60% or less.
> Definitely don't miss out on Pelican's Perch #65 and try to read all of
> them if you can.
>
> If you really get interested in all of this, you may find yourself
> looking at Gami-jectors or even tuning your fuel injector nozzles
> yourself.
>
>
> Scott Derrick wrote:
>>
>> As long as its running smooth at 50 LOP you can then lean even more to
>> what ever you need.  Maximum power at will be 50 LOP.
>>
>>
>>
>>
>>
>>
>>
>
> -- 
> Dave Philipsen
> Velocity STD-FG
> N83DP
>
>
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