[AlaskaRC] Anyone good tuning an engine

[Armand Marshall]

Hello Nathan.

I agree that the Pitts (and some other non-stock) mufflers often cause a
problem with fuel pressure on those glow engines.

What time(s) are you going to be at Elmendorf (approx. when to when)?
Depending on the weather, and whether or not I am out at the other field, I
might try to stop by and say hello (and fly too).

~ Armand Marshall

armand at nmitsolutions.com

 

From: alaskarc-bounces at lists.alaskarc.org
[mailto:alaskarc-bounces at lists.alaskarc.org] On Behalf Of Nathan Stanfield
Sent: Thursday, September 10, 2009 8:09 PM
To: ARCS mailing list
Subject: Re: [AlaskaRC] Anyone good tuning an engine

 


Ray,

Thanks for the help! I am going to try plugging the pipe tonight and I will
test it out Sunday. I was so happy today when it flew, but then terrified
when the engine died, but the dead stick landing was one of the best
landings I have ever made. Too bad I had to power to go around and land
again. I will be out at Elmendorf Sunday if anyone wants to come out and fly
with me. 

 

-------Original Message-------

 

From: ray hoffman <mailto:p51ray at yahoo.com> 

Date: 9/10/2009 5:50:45 PM

To: ARCS mailing list <mailto:alaskarc at lists.alaskarc.org> 

Subject: Re: [AlaskaRC] Anyone good tuning an engine

 


Hi Nathan, I had the same problem, when I put Pitts mufflers on my B-17. I
had problems with all the engines running right. So I did just what you're
thinking. I cut off one pipe, leaving maybe a 1/2 inch. I plugged it with a
wood dowel.Just be sure to drill a very small hole in the center of dowel,
so oil can drain. If you have trouble with afterwords, let me know, and I'll
help you tune it personally. Hope I helped.

 

Ray

--- On Thu, 9/10/09, Nathan Stanfield <NathanStanfield at hotmail.com> wrote:


From: Nathan Stanfield <NathanStanfield at hotmail.com>
Subject: [AlaskaRC] Anyone good tuning an engine
To: alaskarc at lists.alaskarc.org
Date: Thursday, September 10, 2009, 3:41 PM


Hello all, I am a new member of the club and just got to Alaska a month ago.

I have an OS .55 with at Pitts muffler that is giving me problems. It runs
well on the stand but dies as soon as I try to throttle up to take off.  I
have tuned it the best I can, its just rich enough so that it does not lose
power when pointing strait up, but I think with the pitts its not getting
enough back pressure and is running rich to keep it going when pointed up. I
think if I pinch off one of the two exhaust outlets it might help??? Anyone
willing to come out to Elmendorf field on Sunday to help me with it? Or does
anyone have any ideas about what I could do to fix this?

Thanks,

Nathan 


			


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