[NSRCA-discussion] Question - YS140DZ

[Winston E Batchelor]

I used to use fine sand papaer for extra grip OR gasket material
Eddie
----- Original Message ----- 
From: <adriancwong at earthlink.net>
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>;
"'General pattern discussion'" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, June 02, 2008 6:46 PM
Subject: Re: [NSRCA-discussion] Question - YS140DZ


> Larry,
>
> Did you check the drive washer to make sure the surface is not stripped
causing the backplate to slip?
>
> Adrian
>
> -----Original Message-----
> >From: Lisa & Larry <lld613 at psci.net>
> >Sent: Jun 2, 2008 7:41 PM
> >To: 'General pattern discussion' <nsrca-discussion at lists.nsrca.org>
> >Subject: [NSRCA-discussion] Question - YS140DZ
> >
> >Ran the engine at home about three weeks ago and perfect idle, midrange,
and
> >full throttle...
> >
> >
> >
> >I went to the field Sunday to maiden my Titan
Started as it usually does,
> >and while it was at idle I adjusted the transmitter to get it dialed in
> >after my Tx repair / reprogramming. This took about 15 to 20 seconds
Let
it
> >warm up a little longer and then slowly increased rpm
About ½ throttle on
> >the stick, somewhere between 5,000 and 7,000 RPM I heard a low freq buzz
> >(sounded like an electric motor burning up
vbg)
shut it down and found
that
> >the spinner loose (new spinner, new prop APC 16 x 11). This is the set up
I
> >have flown with this engine for 3 years

> >
> >
> >
> >Tightened up the spinner making sure the prop was tight and started again
> >and got a DZ bump
nicked spinner, not bad
Tightened everything up again,
> >started nice idled well, then transitioned to full throttle. Again at
half
> >throttle, it popped, quit, and shavings of prop flew every where. It was
> >violent. The spinner is bent worse than I ever saw before by anyone
The
prop
> >was intact except for the missing chunks at the hub where it hit the
> >spinner.
> >
> >
> >
> >Starting procedures and equipment:
> >
> >
> >
> >Radio South Starter with on/off switch in the off position, using a Kavan
> >starter turn the prop and then turn on the Ni-starter. Temperature was
about
> >20 degree warmer on Sunday than the initial test run. Used the same fuel
> >from the same can, Power Master 30% DZ
> >
> >
> >
> >Three weeks ago it was running a bit on the rich side and I didn’t touch
> >anything until Sunday when I intended to lean it out
Never got that far.
> >
> >
> >
> >What did I do wrong if anything? What can I look for in the engine to
repair
> >or correct myself or looking at?
> >
> >
> >
> >Or do I just send it in to YS Performance?
> >
> >
> >
> >I have a back up 140DZ and bought the last FAI 3-¼ TT spinner w/ light
> >backplate at Central
vbg

> >
> >
> >
> >If I made a mistake, I don’t want to repeat it.
> >
> >
> >
> >Your thoughts? Troy you out there?
> >
> >
> >
> >Larry Diamond
> >
>
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