YS 140 sport problem

[John Pavlick]

Holy sh*#... This YS stuff sounds like the old AMF days at Harley (valve
seats falling out, valves bending and sticking because the guides were too
short ['79], etc.). Lately, a few people have asked me why I don't fly a
4-stroke in my pattern plane. My answer is: "Because O.S. doesn't make one
big enough". Uh-oh, I hope I didn't start something here. So much for things
being quiet on the list...

John Pavlick
http://www.idseng.com


> -----Original Message-----
> From: discussion-request at nsrca.org
> [mailto:discussion-request at nsrca.org]On Behalf Of Joe Dunnaway
> Sent: Friday, March 25, 2005 11:35 PM
> To: discussion at nsrca.org
> Subject: Re: YS 140 sport problem
>
>
> I saw this happen on a 140 L at one of the contests last year...
> Talked to
> the guy at the next contest and he had put the seat back in and peened
> around it.  He said it worked fine.
>
> Joe
>
> ----- Original Message -----
> From: "Bob Kane" <getterflash at yahoo.com>
> To: <discussion at nsrca.org>
> Sent: Friday, March 25, 2005 10:28 PM
> Subject: Re: YS 140 sport problem
>
>
> > Wow, that is a new one on me. I would send it back to
> > YS Performance for a new head. My guess is the seats
> > are cast in place, there is little you could do to
> > repair it.
> >
> > --- iflyrc24 <iflyrc24 at columbus.rr.com> wrote:
> >> I was trying to start my YS 140 Sport and could not
> >> get it to fire. While cranking with the starter the
> >> compression went totally away. I took the valve
> >> cover off and noticed the intake valve clearance was
> >> about 1/8" or so. I pushed in the valve to see if it
> >> was stuck and it fell into the cylinder. I removed
> >> the head and the intake valve and seat assembly came
> >> out of the head fully assembled with spring and
> >> keepers in tact.
> >>
> >> Can the intake assembly be reinstalled in the head
> >> and what holds it in place? Other than aligning the
> >> intake ports is there any other alignments to watch
> >> for?
> >>
> >
> > Bob Kane
> > getterflash at yahoo.com
> >
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! Small Business - Try our new resources site!
> > http://smallbusiness.yahoo.com/resources/
> > =================================================
> > To access the email archives for this list, go to
> > http://lists.f3a.us/pipermail/nsrca-discussion/
> > To be removed from this list, go to http://www.nsrca.org/discussionA.htm
> > and follow the instructions.
> >
>
> =================================================
> To access the email archives for this list, go to
> http://lists.f3a.us/pipermail/nsrca-discussion/
> To be removed from this list, go to http://www.nsrca.org/discussionA.htm
> and follow the instructions.
>
> --
> No virus found in this incoming message.
> Checked by AVG Anti-Virus.
> Version: 7.0.308 / Virus Database: 266.8.3 - Release Date: 3/25/05
>
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.8.3 - Release Date: 3/25/05

=================================================
To access the email archives for this list, go to
http://lists.f3a.us/pipermail/nsrca-discussion/
To be removed from this list, go to http://www.nsrca.org/discussionA.htm
and follow the instructions.