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Albert Gardner
Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ
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 Posted: Sat Oct 27, 2007 6:30 pm Post subject: First Flight Oil Temps |
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Regarding oil temps.
Tim has some great advice (as always) and I am looking at various things.
The stock oil cooler for one. I have a 10:1 engine and it may always run a
little hot in addition to not yet being broke in. The 245 temps are at 2000'
and WOT and 80 OAT so it's near the worst case. Today, running at 16" MAP
and 1750 rpm oil was 203F. Looks a little better.
Albert Gardner
Yuma, AZ
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RV-9A N872RV
RV-10 N991RV |
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Tim Olson
Joined: 25 Jan 2007
Posts: 2881
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| Posted: Sat Oct 27, 2007 7:16 pm Post subject: First Flight Oil Temps |
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You know, it may be premature to even start worrying about the temps
until you get 5 or 10 hours on it and the hardest part of the
break-in is done. I'd try to keep those temps under 220 if you can,
and run it hard like you are supposed to. But they may come down
on their own. My gut tells me to do like Linn said and check closely
around the spinner area and then around the ramps (make sure you sealed
off your upper air ramps internally), and see if there's anything
there you can improve. For you, living in AZ all year long, you
may actually find benefit from a different cooler, but for most
of the people I don't think they'll have the same worries. I worry
more about having oil temps get too low than too warm. You might
be right though that your 10:1 engine might be a little hotter
anyway. Time will tell. Will be cool to hear your progress as you
go. Glad you're as sharin' sort of guy.
Tim Olson - RV-10 N104CD - Flying
do not archive
Albert Gardner wrote:
| Quote: |
Regarding oil temps.
Tim has some great advice (as always) and I am looking at various things.
The stock oil cooler for one. I have a 10:1 engine and it may always run a
little hot in addition to not yet being broke in. The 245 temps are at 2000'
and WOT and 80 OAT so it's near the worst case. Today, running at 16" MAP
and 1750 rpm oil was 203F. Looks a little better.
Albert Gardner
Yuma, AZ
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scottmschmidt(at)yahoo.co
Guest
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| Posted: Mon Oct 29, 2007 4:26 pm Post subject: First Flight Oil Temps |
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Just a quick note from down here in Puerto Rico. (High connection fee)
I recently finished my annual and sealed around the baffles even more and I also sealed around the oil cooler itself. I never realized it but there are gaps on both sides of the oil cooler. I hit 215 the other day climbing out of Palm Springs (97 deg OAT) when it would have normally hit 220. And now that that the baffle is sealed, it is very rare to ever see over 400 deg on the CHT now.
So take a good look at the oil cooler and make sure your seals are working good around the baffle.
Great job on the first flight. I have been flying one year into flying and still working our little tweaks.
I am just now really learning the Grand Rapids and it is quite impressive as well.
By the way, here is some info on my first year.
I put 39,450 miles on the RV-10 the first year in 262.5 hours.
That is an average of 150 mph including taxing and warm up.
Again, good job.
Scott Schmidt
scottmschmidt(at)yahoo.com
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