YS 140L Help (Solved)

[VicenteRC]

Yes, that happen to me in St. Louis contest few years ago.  

Vicente Bortone



----- Original Message -----
From: jed241 at msn.com
Date: Thursday, July 31, 2003 7:58 pm
Subject: Re: YS 140L Help (Solved)

> Good News...Found the problem...
> 
> Bad News...Unless someone has parts and can bring them to the 
> Lenox Contest, 
> I will not be flying the Focus and must live with the Aresti 40 
> once more...
> 
> The problem was the E-Clip that holds the rocker arms on the 
> shaft. The 
> exhaust side broke in about three pieces. One piece was jammed 
> into the 
> valve cover holding the exhaust valve open...Walla, no 
> compression. Engine 
> quit. Had compression as soon as I took the valve cover off. Took 
> me a 1/2 
> hour to find all the pieces. Piston and everything else looks good.
> 
> Part needed is YS0580, E-Clip Set. I will buy them off of anyone 
> that can 
> bring it to the D4 Lenox contest. If not, There is a hobby shop 
> about 1-1/2 
> hours away...In the wrong direction for the contest...
> 
> Has anybody else had this happen, or am I the only one with a 
> gremlin 
> disassembling the engine from the inside?
> 
> See ya,
> 
> Larry Diamond
> 
> 
> ----- Original Message ----- 
> From: "Atwood, Mark" <atwoodm at paragon-inc.com>
> To: <discussion at nsrca.org>
> Sent: Thursday, July 31, 2003 8:40 AM
> Subject: RE: YS 140L Help
> 
> 
> 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 [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 [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
> =====================================
> # To be removed from this list, send a message to 
> # discussion-request at nsrca.org
> # and put leave discussion on the first line of the body.
> #
> 
> 

=====================================
# To be removed from this list, send a message to 
# discussion-request at nsrca.org
# and put leave discussion on the first line of the body.
#