YS 140DZ fixed!

[Ed Deaver]

16.5x12W getting 8900rpm flying at 8400rpm with the restrictor at 3500ft 
using Magnum Dz fuel.

ed






>From: "Troy Newman" <troy_newman at msn.com>
>Reply-To: discussion at nsrca.org
>To: <discussion at nsrca.org>
>Subject: Re: YS 140DZ fixed!
>Date: Wed, 23 Apr 2003 17:35:32 -0700
>
>MessageYou are in the ball park RPM wise...I'm turning the 16.5-12W at 
>8400....peaks out at about 8700...and I'm flying at about 8300-8400....
>
>that is of course on Cool Power 30% heli pro.....
>
>TN
>   ----- Original Message -----
>   From: Peter Pennisi
>   To: discussion at nsrca.org
>   Sent: Wednesday, April 23, 2003 5:16 PM
>   Subject: RE: YS 140DZ fault?
>
>
>   The problem is fixed by replacing the whole pump assembly. When I 
>removed the original one the piston or whatever in the pump was seizing. 
>Motor appears to be running OK. There is a small leak I need to 
>investigate.
>
>
>   What sort of ground RPM are people swinging with this engine. I tached 
>8500 on a 16x12 APC on 25% heli fuel. (Klotz KL-198 heli glow).
>
>
>   Peter Pennisi
>   Pentagon Systems
>   P.O Box 4280
>   Eight Mile Plains
>   QLD 4113
>   Australia
>   Phone:    61+0738414234
>   Fax:        61+0738414264
>   Mobile:   0408007206
>   Email: pentagon.systems at bigpond.com
>     -----Original Message-----
>     From: discussion-request at nsrca.org 
>[mailto:discussion-request at nsrca.org] On Behalf Of PENNISI Peter
>     Sent: Wednesday, 23 April 2003 13:23 PM
>     To: 'discussion at nsrca.org'
>     Subject: RE: YS 140DZ fault?
>
>
>     Thanks Terrence,
>
>     A big problem I am having is it wont go to full throttle. At about 1/3 
>throttle or less it goes lean and stops. How can this be rich. I tried this 
>approach even at 1 1/2 turns out on main needle with the same results. What 
>about the loud metal rattle that is coming from the pump assembly.
>
>     Regards,
>
>     Peter
>       -----Original Message-----
>       From: T&C Brown [mailto:tncbrown at charter.net]
>       Sent: Wednesday, 23 April 2003 1:01 PM
>       To: NSRCA
>       Subject: Fw: YS 140DZ fault?
>
>
>
>       Peter,
>
>       It sounds like your running the engine way too rich.  When I got my 
>first DZ, I set it up the same way, and had the same problem.  You cannot 
>run it like an "L".  If you have adjusted the pump from the factory 
>setting......return it to it's original position and start with the high 
>speed needle at 1 1/8 to 1 1/4 turns out from full closed.  If the motor 
>starts.....let it warm up a minute then advance it to full throttle.  Once 
>at full throttle, slowly  (one or two clicks at a time) turn the needle in 
>to lean it until the RPM drops.  Once you hear the RPM start to drop, 
>richen it back three or so clicks and run it.  I know what your 
>thinking...."It sounds way to lean"  but this is how Richard from YS 
>Performance told me to set it up, and I've had no problems with this.  Once 
>the motor is broke in the high speed needle should be around 3/4 to 1 turn 
>out from full close.  Hope this helps.
>
>       Terrance Brown
>       YS Field Rep
>
>
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