[NSRCA-discussion] YS-160 round 1...ding, ding
Ken Thompson
KTHOMPSON56 at satx.rr.com
Mon Jun 2 02:46:36 AKDT 2008
Yep ;-)
----- Original Message -----
From: "Ed Miller" <edbon85 at tds.net>
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, June 02, 2008 5:24 AM
Subject: Re: [NSRCA-discussion] YS-160 round 1...ding, ding
> You mean the original comment about Mig welding the injector was "Peanut
> Gallery" giving it back to Troy ??
> Ed M.
> ----- Original Message -----
> From: "Ken Thompson" <KTHOMPSON56@ satx.rr.com>
> To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
> Sent: Sunday, June 01, 2008 8:17 PM
> Subject: Re: [NSRCA-discussion] YS-160 round 1...ding, ding
>
>
> Actually if it was aluminum to aluminum, TIG, not MIG, would
> work...there's
> no weld that I'm aware of that will attach brass to aluminum...
>
> Just so it is known, I believe the original comment about MIG welding was
> in
> jest ;-)
> ----- Original Message -----
> From: THERUPMAN at aol.com
> To: nsrca-discussion at lists.nsrca.org
> Sent: Sunday, June 01, 2008 7:02 PM
> Subject: Re: [NSRCA-discussion] YS-160 round 1...ding, ding
>
>
> Troy and all,
> That's fantastic information. If only I knew what MIG welding is.
> BR in Nashville
>
> In a message dated 6/1/2008 6:47:41 P.M. Central Daylight Time,
> troy at troynewman.net writes:
> Adrian,
>
> Mig Welding might work...I don't know...I always thought that MIG
> welding was for aluminum and Steel...like thin sheets or
> tubing...Stainless steel sinks and the likes are MIG welded. While I
> think MIG welding would work on a Header if you were good enough to do
> it, I don't think MIG is what you would use to put the Brass insert
> back
> into an Aluminum casting. The only thing you might be able to do is
> create a small mechanical stop as you melted the MIG "wire" over the
> top
> of the brass fitting. The weld would not penetrate down into the joint
> between the brass Injector Tube and the Aluminum head. Also MIG is very
> critical on having the surfaces clean and dry. It if difficult to get
> down in a hole that is about 1/8" diameter and clean it.
>
> I know there are some welder types out there. I'm not a smart guy on
> welding. I just know that there are different processes needed when the
> metals are different types. If it was Aluminum to Aluminum then I think
> MIG would work...but I don't think it's the best for that situation...I
> think Mig is used when you are building a Bead on the external surface.
> Not trying to get material into a recessed hole. I would think a Sweat
> joint like a plumber uses on copper pipe would be a better situation.
> The Filler rod or solder or what ever would penetrate the joint down
> into the recess and make a mechanical connection down in the hole.
> Welding a small bead over the top of the brass nipple with a MIG
> welder
> may hold for a while but I think it would fail in short order...
>
> Sorry just not enough welding info in my brain.
>
>
> Troy
>
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
> adriancwong at earthlink.net
> Sent: Sunday, June 01, 2008 4:11 PM
> To: General pattern discussion
> Subject: Re: [NSRCA-discussion] YS-160 round 1...ding, ding
>
> Oh, no, instead of JB Weld, I mig welded mine, is that OK?
>
> -----Original Message-----
> >From: JShulman <jshulman at cfl.rr.com>
> >Sent: Jun 1, 2008 6:41 PM
> >To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
> >Subject: Re: [NSRCA-discussion] YS-160 round 1...ding, ding
> >
> >Thanks Troy. Noticed that there is no fuel line keeper, so gotta order
> >one of those. Motor still runs great with lots of power. The richer
> low
>
> >end solved the higher issue instantly too, thanks again! I'm hoping
> that it only moves cause of the lack of the keeper, so we'll get that
> on
> and go from there. Worst case is eventually we'll plug the line right
> into the head.
> >
> >Regards,
> >Jason
> >www.jasonshulman.com
> >www.shulmanaviation.com
> >www.composite-arf.com
> >
> >-----Original Message-----
> >From: nsrca-discussion-bounces at lists.nsrca.org
> >[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Troy
> >Newman
> >Sent: Sunday, June 01, 2008 11:32 AM
> >To: General pattern discussion
> >Subject: Re: [NSRCA-discussion] YS-160 round 1...ding, ding
> >
> >
> >Jason,
> >
> >Regardless of the peanut galleries comments here is the skinny.
> >
> >There are two parts...the black plastic check valve....and then the
> >Brass Injector that goes into the head. The black plastic part can get
> >loose, IF the injector fuel line is allowed to flop around. This is
> why
>
> >it has a clip on it. Some folks will remove the clip and the fuel
> >tubing is allowed to flop. Also some folks seem to thing they can
> >remove the black plastic check valve and re-install it. Nope the
> >Plastic goes on one time and to remove it the plastic breaks out and
> >the hole is not larger from the barb damage.
> >
> >The idea is to not mess with it.
> >
> >
> >There have been a few cases of mostly early 160's and mostly a couple
> >years ago when the brass nozzle came out of the head. I know of 3 of
> >these and one was in Japan, one in Australia and one in the USA.
> >Extremely rare, but clean it up and yes I have been told JB weld will
> >fix it. My understanding is that this nozzle is pressed in with some
> >kind of adhesive at the factory. So the JB weld is the same kind of
> >thing....You don't have that problem.
> >
> >If the engine is allowed to hit the cowl of the model sometime the
> >black plastic check valve will get knocked around....If it gets loose,
> >just remove it and hook the fuel tubing direct to the injector nozzle.
> >It will work fine. The check valve is there for long extended idles,
> >and quick throttle ups.....Think F-07 Double Avalanche. The check
> valve
>
> >prevents a burp on throttle up.
> >
> >
> >If you engine is set properly you won't get the burp anyway...but if
> >its just a touch lean on the pump...then a tiny air bubble can
> migrate
>
> >back into the injector fuel line. This is because the valve cover is
> >the air box...and is under pressure...so the high pressure keeps the
> >fuel from coming out of the injector until the valve on the engine
> >opens. When the valve opens the pump gives a squirt and the fuel comes
> out.....
> >
> >At idle the engine is not using much fuel at all....and the injector
> >will leak a little fuel into the valve cover area....If the engine is
> >too rich (pump)...this is what causes it to get a rough idle. If the
> >pump is too lean then there is not enough fuel in the line and the
> >pressure in the line is lower so the air box pressure pushes the fuel
> >back in the injector line and right at the very end of the in injector
> >line forms a little air bubble.
> >
> >
> >The black plastic check valve prevents this from happening.
> >
> >
> >So the long story aside if its flopping around pry it off with a large
> >flat blade screw driver, just slowly inch it off...then hook the fuel
> >line direct. It will work fine.
> >
> >By the way the new 170's have a different clip on the injector line
> >that keeps the fuel tubing from flopping around. This keeps the black
> >plastic from turning and getting loose on the injector nozzle.
> >
> >
> >The peanut gallery can now continue their comments.
> >
> >Thanks
> >Troy Newman
> >
> >-----Original Message-----
> >From: nsrca-discussion-bounces at lists.nsrca.org
> >[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
> JShulman
> >Sent: Sunday, June 01, 2008 8:06 AM
> >To: General pattern discussion
> >Subject: Re: [NSRCA-discussion] YS-160 round 1...ding, ding
> >
> >Oh yea... the check valve. Regs in front... duh. Where do I plug in
> the
>
> >battery???
> >
> >I'll check it and make sure I'm just seeing things. We're still
> >learning about the new YS's. Maybe it always swiveled and I just now
> noticed it.
> >
> >Regards,
> >Jason
> >www.jasonshulman.com
> >www.shulmanaviation.com
> >www.composite-arf.com
> >
> >-----Original Message-----
> >From: nsrca-discussion-bounces at lists.nsrca.org
> >[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Mike
> >Hester
> >Sent: Sunday, June 01, 2008 10:35 AM
> >To: General pattern discussion
> >Subject: Re: [NSRCA-discussion] YS-160 round 1...ding, ding
> >
> >
> >You mean the check valve? It is press fit. It swivels =)
> >
> >As long as it's not loose, it's fine. Sometimes the fitting comes
> loose
>
> >from the head where it's just pressed in. If that's the case, JB weld.
> >But the black part just presses on to that.
> >
> >if you mean the part that attaches on to the pushrod tubes, it's just
> >plastic and if it's moving excessively, something might have broken.
> >
> >-Mike
> >
> >----- Original Message -----
> >From: "JShulman" <jshulman at cfl.rr.com>
> >To: "NSRCA" <nsrca-discussion at lists.nsrca.org>
> >Sent: Sunday, June 01, 2008 10:12 AM
> >Subject: [NSRCA-discussion] YS-160 round 1...ding, ding
> >
> >
> >> Sooooooooooo.... how do we tighten up the regulator (black piece at
> >> valve
> >> cover) on the top of the motor? It seems that this one has come
> loose
>
> >> as it will swivel back and forth.
> >>
> >> BTW Chris... I am still flying electric <G>
> >>
> >> Regards,
> >> Jason
> >> www.jasonshulman.com
> >> www.shulmanaviation.com
> >> www.composite-arf.com
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> >> 12:25 PM
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