YS 1.40DZ Questions

[Jim Ivey]

Larry
 Call Central. They have the washers sold separately.. Cheap. They will know what your talking about. 
> The big washers are used to seal the header against the head. I thought the later version headers came with them. Anyway they are what you need.

Jim Ivey
> From: "Larry Diamond" <lld613 at psci.net>
> Date: 2005/05/17 Tue AM 10:49:39 EDT
> To: <discussion at nsrca.org>
> Subject: RE: YS 1.40DZ Questions
> 
> Jim,
> 
> Thanks for the input...
> 
> Regarding the header...It is a 120-140DZ (P/N NMPDZHDR).
> 
> I can't find the instruction, but I thought I read it very closely. I didn't
> receive any copper washers and the instructions said not to use any (or so I
> thought). That using the RTV Silicone rated at 650F would act as a thread
> locker and seal.
> 
> I just bought this from Central Hobbies in the last couple of months.
> 
> Reading past threads, Troy Newman said he used copper washers also with many
> flights and no problem...
> 
> Did I miss read the instruction and shipped short copper washers?
> 
> Where can I get the copper washers at?
> 
> Larry
> 
> -----Original Message-----
> From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
> Behalf Of Jim Ivey
> Sent: Tuesday, May 17, 2005 9:30 AM
> To: discussion at nsrca.org
> Subject: Re: YS 1.40DZ Questions
> 
> Larry
>  You are in the ballpark,however I use a 16.5x12W on my 140DZ and it turns
> 81-8300. The needle has a flat spot in the adjustment, with an increase in
> needle, (going Leaner),the rpm doesnt change much.  Adjust to the upper end
> of this flat spot(leaner). It will use less fuel.
> There are different headers. If you have one of the first headers, the
> header mating flange is milled differently. On this one do not use the
> copper washer in the head, but use the 2 big copper washers between the
> header and head.
> On the later version header you can use the copper washer in the head and
> also the 2 big copper washers and the nut will tighten the header to the
> head. Still use the sealer like you are doing.  The object is to get the
> header to seat hard against the side of the head,then it will seal.
> Hope this helps.
> 
> Jim Ivey
> > 
> > From: "Larry Diamond" <lld613 at psci.net>
> > Date: 2005/05/17 Tue AM 09:49:39 EDT
> > To: "NSRCA" <discussion at nsrca.org>
> > Subject: YS 1.40DZ Questions
> > 
> > I refitted my Focus with a YS 140DZ. Don't know that I'm getting the power
> I
> > should get. With that said, I now fly with less throttle than the YS 140L;
> > 45 degree up lines are now at ½ throttle and vertical lines are about ¾
> > throttle.
> > 
> > Here is my set up:
> > 
> > 1)	Medium size fuel tubing, new (no air bubbles noted)
> > 2)	Power Master 30% DZ
> > 3)	APC 17x12
> > 4)	NMP Header from Central Hobbies (Having problems stopping the
> > exhaust leaks at the head, using Permatex -26B- Red RTV Silicone, rated at
> > 650F+).
> > 5)	5/8" coupler
> > 6)	698 Hatori pipe.
> > 7)	Check valve on the vent line.
> > 8)	16oz Sullivan fuel tank w/ foam clunk (because that is what was in
> > it before. Any recommendation for a 20 oz tank?)
> > 9)	Pump is about ½ turn in from flush.
> > 10)	Needle is at about 2 turns out.
> > 11)	Max ground RPM - 7,900 / Air Temp - 60F
> > 12)	Idles -reliably- at 2,600 RPM
> > 
> > Not necessarily considered broke in yet, 4 tanks ran on the ground
> > (following the steps by Don Szczur on Radio South's website) and two
> flights
> > with the Intermediate sequence...
> > 
> > What prop is being used and what RPM should be expected with PM 30% DZ?
> > 
> > 
> 
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