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First Flight

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Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Fri Oct 26, 2007 9:10 pm Post subject: First Flight

 	  Quote: 	
		  N991RV first flew on 10/23. 4 hours now but oil temps are too high – 245 – so I’m trying to fix that. Otherwise, it flies great, just as I hoped. What a plane!Albert GardnerYuma, AZ

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_________________
RV-9A N872RV
RV-10 N991RV

acs(at)acspropeller.com.a
Guest

Posted: Fri Oct 26, 2007 9:19 pm Post subject: First Flight

Congrats Albert!!

 A fine looking machine.

 John 40315

 do not archive

 [quote]   ---

Mike Whisky

Joined: 05 Jun 2006
Posts: 336
Location: Switzerland

Posted: Sat Oct 27, 2007 12:12 am Post subject: Re: First Flight

Congratulations Albert from Switzerland. Let us know what the reason was for the high oil temps and what you did to get them down.



Michael

_________________
RV-10 builder (flying)
#511

AirMike

Joined: 27 Feb 2007
Posts: 514
Location: Nevada

Posted: Sat Oct 27, 2007 2:19 am Post subject: First Flight

Kuddos - beautiful paint job too. You are an inspiration

to all other "older" builders. Hope you get the oil thing worked out

without too much hassle. Did you use the Vans or the oversize

oil cooler?

_________________
See you OSH '18
Q/B - sold.

seipel(at)seznam.cz
Guest

Posted: Sat Oct 27, 2007 2:44 am Post subject: First Flight

Very nice Albert! Congratulations!



PJ Seipel

do not archive!



Albert Gardner wrote:

 	  Quote: 	
		   *N991RV first flew on 10/23. 4 hours now but oil temps are too high – 245 – so I’m trying to fix that. Otherwise, it flies great, just as I hoped. What a plane!*

 *Albert Gardner*

 *Yuma, AZ*

 * *

 * *



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darnpilot(at)aol.com
Guest

Posted: Sat Oct 27, 2007 4:45 am Post subject: First Flight

Seems like the oil cooling problem is pretty common on the RV...even most experimental planes.  Why is that?  What is the usual cause and/or cure?  Why not address it in the initial assembly?  Why would it vary between airplanes?

 

 Jeff  Email and AIM finally together. You've gotta check out free AOL Mail! 

  [quote][b]

Tim Olson

Joined: 25 Jan 2007
Posts: 2882

Posted: Sat Oct 27, 2007 5:16 am Post subject: First Flight

This isn't to pick on Albert, who just started flying, of course.  But,

After starting with high CHT's that would get easily over 410 in climb

even when solo and now having it stay well in the green with the whole

family on board, I can tell you that the builder has a lot to do with

the temps. I KNOW that I didn't do as good a job initially as I thought

I did.  During the original build, you look at things, and they seem

to look fine. Things like how well you sealed around your prop governor,

and how nice your cowling ramps were done, and nobody even thinks

about between-cylinder casting crud.  Then, when you realize you have

an issue (which just like many problems, first you have to *admit* you

have a problem), then you start to look very critically at things

again.  I easily dropped 30-40 degrees on my plane after being diligent.

Also, during initial assembly, as you get to the engine and final

stages, the motivation to fly starts to overwhelm you and you start

to get builder-tunnel-vision to some extent...and that catches up

with you too.  Truly, for many people, once you start to fly, you

can easily use up 40-60 flying hours of tinkering with your avionics,

systems, and engine to get everything perfect.  Even to this day

I occasionally have things that I think can be improved.  In a few

days I'll be writing one of them up.



As for why does it vary between planes.....well, the major difference

is that builders vary, but so do engines, props, cowls, and so on.

ALL of them can be made to work well, from what I can tell, but the

builder is the major factor.  Even with the James cowl, that supposedly

promised more Knots and less Heat, the offline comments I've gotten from

a couple of flying James cowlers indicate they have speeds the same as

the other cowl, and actually have heat problems as well.  Can't really

blame the cowl though until the builder does their diligence....and

once they get their mind around it, I'm sure things will improve

too.



There are a few planes out there with Louvres on their cowls, which

for some may actually be needed depending on the severity of their

environment.  For many though, I think they're just a band-aid for

sub-par baffle work.  I'd say fix the issues as best you can the

proper way and THEN see if you need them.



Anyway, the builder....that's usually the difference, and it's not to

insult anyone at all.  I myself was in that situation.



Tim Olson - RV-10 N104CD - Flying

do not archive

darnpilot(at)aol.com wrote:

 	  Quote: 	
		   

 Seems like the oil cooling problem is pretty common on the RV...even 

 most experimental planes.  Why is that?  What is the usual cause and/or 

 cure?  Why not address it in the initial assembly?  Why would it vary 

 between airplanes?

 

 Jeff

 ------------------------------------------------------------------------

 Email and AIM finally together. You've gotta check out free AOL Mail 

 <http://o.aolcdn.com/cdn.webmail.aol.com/mailtour/aol/en-us/index.htm?ncid=AOLAOF00020000000970>!

 

 *

coop85(at)cableone.net
Guest

Posted: Sat Oct 27, 2007 7:12 am Post subject: First Flight

Congratulations!  It looks great.  

   

Have fun with the testing,  

Marcus  

         

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Albert Gardner

 Sent: Saturday, October 27, 2007 12:08 AM

 To: rv10-list(at)matronics.com

 Subject: First Flight  

  

   [quote]N991RV first flew on 10/23. 4 hours now but oil temps are too high – 245 – so I’m trying to fix that. Otherwise, it flies great, just as I hoped. What a plane!Albert GardnerYuma, AZ  [b]

pitts_pilot(at)bellsouth.
Guest

Posted: Sat Oct 27, 2007 6:05 pm Post subject: First Flight

I'm going to float my opinion, so take it for what it's worth.  I think the cause is poor baffle seals, and the difference between planes is due to difference in the sealing.  Let's face it, using the upper cowl as the top of the plenum is a poor choice to start with, and it only goes downhill from there.  It's not a new problem, even the certificated ones don't seal well once they age a little.  Sealing all the baffle leaks is the biggest high temp killer you have.

 

 So, what's the solution???  Mine will be to add a fiberglass (or carbon fiber) sheet to make a plenum from the air intakes to the back of the engine, using the stock baffles minus the baffle seal material. I'll pay particular attention to the area around the starter and all the areas where the aluminum baffle material meets the engine.  One other overlooked area is the gap between the spinner and the cowl.  Air comes into the inlet, and is sucked forward around the flywheel and then out between the spinner and cowl.  To seal this area, take some foam pipe covers .... the type to prevent pipes from sweating and glue it in a ring around the area just behind the spinner.  A really tight fit is good since on first startup it becomes self forming.

 Linn .... but I'm nowhere there yet!

 

 darnpilot(at)aol.com (darnpilot(at)aol.com) wrote:

 [quote]

 Seems like the oil cooling problem is pretty common on the RV...even most experimental planes.  Why is that?  What is the usual cause and/or cure?  Why not address it in the initial assembly?  Why would it vary between airplanes?

   

 Jeff      Email and AIM finally together. You've gotta check out free AOL Mail!

   

    	  Quote: 	
		  

	
 [b]

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Tue Oct 30, 2007 7:42 am Post subject: First Flight

Al,

Boy, you've been hard at it! She looks beautiful! Congratulations on 

having the only FLYING RV-10 in Arizona!



Deems

green w./envy



Albert Gardner wrote:

 	  Quote: 	
		   *N991RV first flew on 10/23. 4 hours now but oil temps are too high – 245 – so I’m trying to fix that. Otherwise, it flies great, just as I hoped. What a plane!*

 *Albert Gardner*

 *Yuma, AZ*

 * *

 * *



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