[NSRCA-discussion] YS Problem
Archie Stafford
astafford at swtexas.net
Tue Jun 2 20:24:58 AKDT 2009
Ryan,
Mark lost the entire fitting, not just the check valve.
Arch
From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Ryan Smith
Sent: Tuesday, June 02, 2009 11:23 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] YS Problem
Archie,
I saw on Japanese build thread for a Starcraft Addiction that the owner was using a Great Planes spinner. I've used them on a couple of airplanes and like them.
Mark,
Did the brass fitting come out or just the check valve pop off of the fitting? I was breaking in a 1.70 for a friend of mine and after fooling around with it for quite a while it ran for about one minute before it quit. I started trying to start it again, and I felt something hitting the glow driver when I was putting it back on the plug and I noticed a little fuel dripping.
I took the chin cowl off and the actual check valve had melted at the bottom and mushroomed out and fell off of the fitting. It turns out it was because the low end setting was about one turn lean. I stole a check valve off of a 1.60 and richened the low end up a turn and it ran like a top. Granted, you've got more time on your motor than this one did when I ran into the problem, but I thought I'd at least offer my experience.
-------------- Original message from "Archie Stafford" <astafford at swtexas.net>: --------------
Which of the plastic spinners are some of the Japanese and others running? I see it has an aluminum backplate, but definitely has a plastic front. I have one of the Great Planes with the aluminum backplate that I'm going to try. With
> the CDI, I don’t mind it because it starts so easily.
>
>
>
> -----Original Message----- From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Archie Stafford
> Sent: Tuesday, June 02, 2009 10:32 PM
> To: 'General pattern discussion'
> Subject: Re: [NSRCA-discussion] YS Problem
> Nope, bolt was gone. I thought it might have broken also, but it didn't. I guess it just loosened up over time. I used to make it a point to check it
> periodically, but got out of the habit...
>
> -----Original Message----- From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Jon Lowe
> Sent: Tuesday, June 02, 2009 10:24 PM
> To: nsrca-discussion at lists.nsrca.org
> Subject: Re: [NSRCA-discussion] YS Problem
>
> I had a bolt break in two, no kick, and I had the same thing happen.
> Was the end of your bolt still in the adapter? I now change bolts
> semi-frequently. Of course it had to happen in the middle of a judged
> round, Jason Shulman was judging and saw it, so I zeroed the round from
> that point on.
>
>
> Jon Lowe
>
>
> -----Original Message-----
> From: Archie Stafford
> To: 'General pattern discussion'
> Sent: Tue, 2 Jun 2009 10:08 pm
> Subject: Re: [NSRCA-discussion] YS Problem
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> That’s OK..I lost an almost brand new spinner tonight. Didn’t
> have a YS kick to do it..I guess the bolt wasn’t as tight as I
> thought…just the
> cone came off…3 week old anodized Tru Turn….grrr….
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> From:
> nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org]
> On Behalf Of Atwood, Mark
>
> Sent: Tuesday, June 02, 2009 10:05 PM
>
> To: General pattern discussion
>
> Subject: Re: [NSRCA-discussion] YS Problem
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> I’ll read the link…
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> Sounds good! You missed a beautiful night to fly. So
> did I L
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> From: nsrca-discussion-bounces at lists.nsrca.org0D
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Anthony
> Abdullah
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> Sent: Tuesday, June 02, 2009 10:56 PM
>
> To: General pattern discussion
>
> Subject: Re: [NSRCA-discussion] YS Problem
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> None taken :o)
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> I hope like hell I'm wrong!!!
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> Attached is a link to a thread in RCU titled
> "Injector coming out of head"
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> http://www.rcuniverse.com/forum/m_7197327/anchors_7210131/mpage_1/key_/anchor/tm
> .htm#7210131
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> Speaking of YS and fun, I am pulling a half the niter converting
> my Black Magic to electric... Hmmmmmm Let me tell you, it was NOT fun
> trying
> to get the nose ring out, damn that thing was in there good. Other
> than that
> it is going fairly well actually almost done staring at it.
>
>
>
> --- On Tue, 6/2/09, Atwood, Mark
> wrote:
>
>
>
>
> From: Atwood, Mark
>
> Subject: Re: [NSRCA-discussion] YS Problem
>
> To: "General pattern discussion"
>
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> Date: Tuesday, June 2, 2009, 10:43 PM
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> In
> a word… Crap!
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> Anyone
> else?? I’d
> like a second opinion!!!! (nothing personal Anthony but
> your
> opinion ..well…sucks. lol) I have a feeling you’re correct
> though, much to my chagrin. Not having a good YS moment.
>
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> From:
> nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org]
> On Behalf Of Anthony Abdullah
>
> Sent: Tuesday, June 02, 2009 10:42 PM
>
> To: General pattern discussion
>
> Subject: Re: [NSRCA-discussion] YS Problem
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> Mark,
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> Bad news, you can not put that back in so it does not pup out again.
> From what I have read, that problem isn't really user serviceable.
> I have
> read posts of guys pressing them back in and even some guys using
> JB Weld
> to keep them in. Usually that is a problem that requires the engine
> to go
> back to YS.
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> Sorry to hear that!
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> Anthony
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> --- On Tue, 6/2/09, Atwood, Mark
> wrote:
>
>
>
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> From: Atwood, Mark
>
> Subject: [NSRCA-discussion] YS Problem
>
> To: "General pattern discussion"
>
>
> Date: Tuesday, June 2, 2009, 10:16 PM
>
> 0D
>
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> The short version… YS1.70DZ – the brass fitting on
> the TOP of the head (towards the back) that has the black check
> valve
> pressed onto it blew out of the engine in flight!! Needless to say
> the motor quit.
>
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> It appears to be a pressure fit. I pressed it back
> in (I knew this wouldn’t work, but what the heck), started the
> engine. It idled great, ran up great, took off, and as soon as the
> motor warmed up (about two passes, pulled vertical and POP…dead as a
> rock. Landed… and the fitting had popped out again.
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> So I have a few questions…
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> What caused this to pop out in the first place??
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> What do I do to put it back in SECURELY
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> HELP!!!!
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> -Mark
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