YS 140L Help

[Atwood, Mark]

I don't think the low nitro would cause a "sudden" change or cause the engine to quit as you say it did, but I agree with Eric that the YS's enjoy Nitro.  

Another thing to check if you've only run 10 flights is the valves.  I've had new or rebuilt engines where the valves have tightened up after the first few flights and it caused sudden failure.  I like to set the clearences on the tight side, but if they're tooooo tight, bad things happen :)


-----Original Message-----
From:	Henderson,Eric [mailto:Eric.Henderson at gartner.com]
Sent:	Thu 7/31/2003 9:11 AM
To:	discussion at nsrca.org
Cc:	
Subject:	RE: YS 140L Help

I would not run an L with less than 20%.
 
regards,
 
Eric.
-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On Behalf Of jim ivey
Sent: Wednesday, July 30, 2003 11:07 PM
To: discussion
Subject: Re: YS 140L Help


Larry
 Make sure the clunk is not in the front of the tank. It is not Folded backwards. Check the plug and make sure low end idle is set correct. Also maybe lean it some more so that the top end won't be so loaded with fuel that it puts plug out when you pull it back to idle. Sometimes My 140's will quit if I jerk them back to idle, if the are too rich on top end. I know guys my low end may not be right either. 
 
just tho'ts
Jim Ivey

----- Original Message -----
From: jed241 at msn.com
Sent: Wednesday, July 30, 2003 10:52 PM
To: NSRCA
Subject: YS 140L Help
 
I have a 140L in a Focus. Has been flying very well and very strong, with never a problem. I have about 10 flights on this barely used engine and I flame out in a very uncomfortable attitude. Vertical climb flamed out at about 25% of the vertical in a stall turn. I was settled at 3/4 throttle, never need full throttle flying Sportsman with this plane.
 
Although at the down wind part of the field and pointed the wrong direction when the engine quit (straight up), I was able to drag her all the way in and still managed to make it a very hot landing <vbg>.
 
Anyway, What kind of things would cause a very strong running motor to just quit? If anything it was a tad bit to the rich side with a exhaust trail.
 
Fuel is WildCat 15% Nitro 18% Synth (no castor).
 
Pretty vague question I know, just curious what this typically ends up being. I was planning on taking it to a contest this weekend.
 
See ya,
 
Larry




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