YS 140 problem

[Mark Hunt]

Well said Dave!  I recently switched to cool power 30% heli and found the 
same requirements.  I think this is why the 140sport works better when the 
air bleed hole (could be the wrong term..) is drilled out a bit.  Allowing 
easier low end mixture (lean) control.


----- Original Message ----- 
From: "Dave Harmon" <K6XYZ at valornet.com>
To: <discussion at nsrca.org>
Sent: Thursday, July 14, 2005 9:25 PM
Subject: RE: YS 140 problem


> If it is a 140 Sport and you are using low viscosity oil fuel such as
> Cool Power 30% Heli, the regulator will need to be leaned and the low
> speed need needle will need to be leaned as well.
> I have used 2 of these engines very recently and they run very well and
> idle very well if you can get the idle lean enough.
> If you change to standard viscosity fuel such as Cool Power 20/20 Pro
> Pattern the mixture should lean out.
> Of course, you could contact YS Performance and get the official word re
> this problem.
>
> Regards
>
> Dave Harmon
> NSRCA 586
> K6XYZ[at]valornet[dot]com
> Broken Arrow, Ok.
>
> -----Original Message-----
> From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
> On Behalf Of Bob Kane
> Sent: Thursday, July 14, 2005 9:18 PM
> To: discussion at nsrca.org
> Subject: Re: YS 140 problem
>
> One more question, did you take the carb off or apart?
> There is a gasket between the carb body and packplate
> that will fit backwards and cause problems.
>
> --- Bob Kane <getterflash at yahoo.com> wrote:
>
>> Wow, that is a big prop . . . .
>>
>> Anyway, check the throttle stop screw, you should be
>> able to close the throttle barrel with the servo.
>> The
>> stop screw is next to the intake opening.
>>
>>
>> The low end needle should be out about 1 turn from
>> closed. It is an air bleed, so in is richer, out is
>> leaner.
>>
>> --- "Daniel J. Hamlett" <d77hamlett at comcast.net>
>> wrote:
>>
>> > The engine is a sport.  It has less than 40oz
>> > through it.  I am running
>> > the 1.40, NHP 5/8th header and ES carbon 5/8th
>> inlet
>> > pipe.  Sorry I
>> > forgot to add this on the original post.
>> >
>> > Bob Kane wrote:
>> >
>> > >Which 140?  FZ, L, DZ, Sport?  I assume it must
>> be
>> > a
>> > >DZ swinging a 17X10?
>> > >
>> > >--- "Daniel J. Hamlett" <d77hamlett at comcast.net>
>> > >wrote:
>> > >
>> > >
>> > >
>> > >>I know that in the past there has been a post on
>> > the
>> > >>following topic but
>> > >>I don't have it.  Something about having to
>> drill
>> > >>out the spray bar ???
>> > >>
>> > >>I have a YS 140 that I can't get to idle down to
>> > >>2200.  The lowers that
>> > >>I can get it is to about 2750-2800.  I know that
>> > >>this is way too high.
>> > >>I am running a Mezlick 17X10 prop and S+W 20/20
>> > >>fuel.
>> > >>
>> > >>Any help on this would be appreciated.
>> > >>
>> > >>Thank you in advance and good luck to all at the
>> > >>NATS.
>> > >>
>> > >>Dan
>> > >>
>> > >>
>> > >>
>> > >
>> > >
>> > >Bob Kane
>> > >getterflash at yahoo.com
>> > >
>> >
>> >__________________________________________________
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>>
>>
>> Bob Kane
>> getterflash at yahoo.com
>>
>>
>>
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>
>
> Bob Kane
> getterflash at yahoo.com
>
>
>
> ____________________________________________________
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