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Deems Davis
Joined: 09 Jan 2006
Posts: 925
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 Posted: Sat May 09, 2009 12:20 pm Post subject: Engine MP & RPM |
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What engine setting are people using ? My oil consumption seems to have
stabilized. So I'm backing off the high MP and RPM settings and looking
for that 'sweet spot'. So far it seems that the engine runs smoother (at)
2300 RPM and above, below that I seem to pick up some engine vibration
(probably need to get the prop balanced). What setting are folks using.
I'm still ROP and expect to stay that way for a while, So i'll wait for
the LOP discussion/s.
Deems Davis
N519PJ
12.5 hrs
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Tim Olson
Joined: 25 Jan 2007
Posts: 2872
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| Posted: Sat May 09, 2009 12:47 pm Post subject: Engine MP & RPM |
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I've usually liked 2360RPM for most cruising, and interestingly
there are a handful of people who also found that to be a
smooth sweet spot. Might not work for everyone but it's
been working out great for me. Give it a shot and
see if you find it good too. I don't generally get below 2300,
and just use 2400-2500 for certain circumstances.
I do find that although 25 squared isn't a bad way to climb,
the engine stays cooler better for me if I keep it full
forward all the way up through 5-7k' for climbing. It gets
you out of the warm air faster.
Tim Olson - RV-10 N104CD
do not archive
Deems Davis wrote:
| Quote: |
What engine setting are people using ? My oil consumption seems to have
stabilized. So I'm backing off the high MP and RPM settings and looking
for that 'sweet spot'. So far it seems that the engine runs smoother (at)
2300 RPM and above, below that I seem to pick up some engine vibration
(probably need to get the prop balanced). What setting are folks using.
I'm still ROP and expect to stay that way for a while, So i'll wait for
the LOP discussion/s.
Deems Davis
N519PJ
12.5 hrs
|
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jesse(at)saintaviation.co
Guest
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| Posted: Sat May 09, 2009 1:10 pm Post subject: Engine MP & RPM |
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Lately I've been staying at or right below 2400 (Tim's right on the
money) and like economy cruise around 20". On a long trip I would
keep it at 2400ish and WOT at altitudes over 10,000. I have a power
chart I could scan that seems to right on with a stock IO-540, but you
are far from stock.
Jesse Saint
Saint Aviation
jesse(at)saintaviation.com
352-427-0285
Sent from my iPhone
On May 9, 2009, at 4:45 PM, Tim Olson <Tim(at)MyRV10.com> wrote:
| Quote: |
I've usually liked 2360RPM for most cruising, and interestingly
there are a handful of people who also found that to be a
smooth sweet spot. Might not work for everyone but it's
been working out great for me. Give it a shot and
see if you find it good too. I don't generally get below 2300,
and just use 2400-2500 for certain circumstances.
I do find that although 25 squared isn't a bad way to climb,
the engine stays cooler better for me if I keep it full
forward all the way up through 5-7k' for climbing. It gets
you out of the warm air faster.
Tim Olson - RV-10 N104CD
do not archive
Deems Davis wrote:
>
> What engine setting are people using ? My oil consumption seems to
> have stabilized. So I'm backing off the high MP and RPM settings
> and looking for that 'sweet spot'. So far it seems that the engine
> runs smoother (at) 2300 RPM and above, below that I seem to pick up
> some engine vibration (probably need to get the prop balanced).
> What setting are folks using. I'm still ROP and expect to stay that
> way for a while, So i'll wait for the LOP discussion/s.
> Deems Davis
> N519PJ
> 12.5 hrs
|
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pitts_pilot(at)bellsouth.
Guest
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| Posted: Sat May 09, 2009 3:57 pm Post subject: Engine MP & RPM |
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Deems Davis wrote:
| Quote: |
What engine setting are people using ? My oil consumption seems to have
stabilized. So I'm backing off the high MP and RPM settings and looking
for that 'sweet spot'. So far it seems that the engine runs smoother (at)
2300 RPM and above, below that I seem to pick up some engine vibration
(probably need to get the prop balanced).
Best thing you can do to your engine, airframe, and instruments ....
|
well, the steam gauge kind. Have the prop balanced at your chosen
cruise RPM.
You might play with the mixture again when you throttle back to see if
it makes a difference with the vibration.
Linn
What setting are folks using.
| Quote: | I'm still ROP and expect to stay that way for a while, So i'll wait for
the LOP discussion/s.
Deems Davis
N519PJ
12.5 hrs
------------------------------------------------------------------------
Checked by AVG - www.avg.com
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gengrumpy(at)aol.com
Guest
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| Posted: Sat May 09, 2009 6:39 pm Post subject: Engine MP & RPM |
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I use 2400 also and set the MP at level off based on the IO 540 chart
from Lyc, then lean.
I usually pull back to 2500 once safely airborne and climb with full
MP to level off, then roll back to 2400.
grumpy
do not archive
On May 9, 2009, at 4:09 PM, Jesse Saint wrote:
| Quote: |
Lately I've been staying at or right below 2400 (Tim's right on the
money) and like economy cruise around 20". On a long trip I would
keep it at 2400ish and WOT at altitudes over 10,000. I have a power
chart I could scan that seems to right on with a stock IO-540, but
you are far from stock.
Jesse Saint
Saint Aviation
jesse(at)saintaviation.com
352-427-0285
Sent from my iPhone
On May 9, 2009, at 4:45 PM, Tim Olson <Tim(at)MyRV10.com> wrote:
>
>
> I've usually liked 2360RPM for most cruising, and interestingly
> there are a handful of people who also found that to be a
> smooth sweet spot. Might not work for everyone but it's
> been working out great for me. Give it a shot and
> see if you find it good too. I don't generally get below 2300,
> and just use 2400-2500 for certain circumstances.
>
> I do find that although 25 squared isn't a bad way to climb,
> the engine stays cooler better for me if I keep it full
> forward all the way up through 5-7k' for climbing. It gets
> you out of the warm air faster.
>
> Tim Olson - RV-10 N104CD
> do not archive
> Deems Davis wrote:
>>
>> What engine setting are people using ? My oil consumption seems to
>> have stabilized. So I'm backing off the high MP and RPM settings
>> and looking for that 'sweet spot'. So far it seems that the engine
>> runs smoother (at) 2300 RPM and above, below that I seem to pick up
>> some engine vibration (probably need to get the prop balanced).
>> What setting are folks using. I'm still ROP and expect to stay
>> that way for a while, So i'll wait for the LOP discussion/s.
>> Deems Davis
>> N519PJ
>> 12.5 hrs
>
>
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| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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gengrumpy(at)aol.com
Guest
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| Posted: Sat May 09, 2009 6:39 pm Post subject: Engine MP & RPM |
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Linn has something there.
I saw curious vibrations at reduced MP only to later discover that MP
was below recommended for that altitude in the Lyc chart....smoothed
out once I followed the suggested RPM, MP and altitude chart.....
grumpy
do not archive
On May 9, 2009, at 6:53 PM, linn wrote:
| Quote: |
Deems Davis wrote:
>
> What engine setting are people using ? My oil consumption seems to
> have stabilized. So I'm backing off the high MP and RPM settings
> and looking for that 'sweet spot'. So far it seems that the engine
> runs smoother (at) 2300 RPM and above, below that I seem to pick up
> some engine vibration (probably need to get the prop balanced).
Best thing you can do to your engine, airframe, and instruments ....
well, the steam gauge kind. Have the prop balanced at your chosen
cruise RPM.
You might play with the mixture again when you throttle back to see
if it makes a difference with the vibration.
Linn
What setting are folks using.
> I'm still ROP and expect to stay that way for a while, So i'll wait
> for the LOP discussion/s.
> Deems Davis
> N519PJ
> 12.5 hrs
> ------------------------------------------------------------------------
> Checked by AVG - www.avg.com
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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