Today's Message Index:
----------------------
1. 09:30 AM - Re: SPINNER (Doug Sapp)
2. 09:50 AM - Re: SPINNER (Ernie)
3. 10:54 PM - Re: Generator Warning Light ON in flight (Royden Heays)
Message 1
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--> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
Ernie,
IMHO any thing is possible------if you throw enough time and money at it.
The problems with installing a spinner on the Chinese prop look pretty
benign at first, and I like you used terms like "just do this" and "simply
change that", but when you consider the problems with installing longer
studs in the propeller hub, having a back plate turned out(assuming you are
using the Russian spinner with it's larger blade holes and all) and then
having to deal with the shutter clearance problems the whole project looses
a bit of it's luster. Doing away with the shutters completely should not be
considered an option (in my opinion), as the engine will run far to cool.
Installing the iris type gills will solve your clearance problem but the
cost is close to 2K for the set. Next comes all the problems with balance,
which if not exactly correct will result in cracked back plates, which will
most likely result in the removal of the prop to repair the problem.
Years ago I too suffered from "spinner envy" and was consumed by the idea of
a pointy nosed CJ, but finally my better judgment and my wallet got the best
of me and I decided that when compared the estimated 3K to do the job that
the stock configuration just didn't look that bad after all.
Doesn't Joe Howse sell a spline type 3 blade which comes with a spinner?
What's the cost Joe??
Always Yakin,
Doug Sapp
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Ernie
Subject: Re: Yak-List: SPINNER
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
Well, thats the point, an Nanchang CJ-6 doesnt have a spinner. The prop hubs
between the Housai and the M-14 engines are pratically identical except for
the mounting. The CJ uses a Spline type mount whereas the M-14 uses a bolt
on. The CJ does however have bolts on the back of the hub to hold in the
spline assembly. The bolt patterns are different however. Fortunately the
backing halve is not a single piece, but is composed of the major outer ring
which comprises the backing plate, and an inner ring which has the bolt hole
pattern to attach to the hub. This inner section is bolted to the main
backing plate. One could just fabricate new inner section to correspond to
the CJ hub bolt pattern.
Ernie
----- Original Message -----
From: "Aubrey Price" <aprice@vartec.net>
Subject: Yak-List: SPINNER
> --> Yak-List message posted by: Aubrey Price <aprice@vartec.net>
>
> Will a Nanchang C6A spinner and back plate fit a YAK 52.
>
>
Message 2
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--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
I'm starting to agree with you Doug. I'd love to have a 3 bladed prop, but I
just cant afford it.
Ernie
----- Original Message -----
From: "Doug Sapp" <rvfltd@televar.com>
Subject: RE: Yak-List: SPINNER
> --> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
>
> Ernie,
> IMHO any thing is possible------if you throw enough time and money at it.
> The problems with installing a spinner on the Chinese prop look pretty
> benign at first, and I like you used terms like "just do this" and "simply
> change that", but when you consider the problems with installing longer
> studs in the propeller hub, having a back plate turned out(assuming you
are
> using the Russian spinner with it's larger blade holes and all) and then
> having to deal with the shutter clearance problems the whole project
looses
> a bit of it's luster. Doing away with the shutters completely should not
be
> considered an option (in my opinion), as the engine will run far to cool.
> Installing the iris type gills will solve your clearance problem but the
> cost is close to 2K for the set. Next comes all the problems with
balance,
> which if not exactly correct will result in cracked back plates, which
will
> most likely result in the removal of the prop to repair the problem.
>
> Years ago I too suffered from "spinner envy" and was consumed by the idea
of
> a pointy nosed CJ, but finally my better judgment and my wallet got the
best
> of me and I decided that when compared the estimated 3K to do the job that
> the stock configuration just didn't look that bad after all.
>
> Doesn't Joe Howse sell a spline type 3 blade which comes with a spinner?
> What's the cost Joe??
>
> Always Yakin,
> Doug Sapp
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com]On Behalf Of Ernie
> To: yak-list@matronics.com
> Subject: Re: Yak-List: SPINNER
>
>
> --> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
>
> Well, thats the point, an Nanchang CJ-6 doesnt have a spinner. The prop
hubs
> between the Housai and the M-14 engines are pratically identical except
for
> the mounting. The CJ uses a Spline type mount whereas the M-14 uses a bolt
> on. The CJ does however have bolts on the back of the hub to hold in the
> spline assembly. The bolt patterns are different however. Fortunately the
> backing halve is not a single piece, but is composed of the major outer
ring
> which comprises the backing plate, and an inner ring which has the bolt
hole
> pattern to attach to the hub. This inner section is bolted to the main
> backing plate. One could just fabricate new inner section to correspond to
> the CJ hub bolt pattern.
>
> Ernie
> ----- Original Message -----
> From: "Aubrey Price" <aprice@vartec.net>
> To: <yak-list@matronics.com>
> Subject: Yak-List: SPINNER
>
>
> > --> Yak-List message posted by: Aubrey Price <aprice@vartec.net>
> >
> > Will a Nanchang C6A spinner and back plate fit a YAK 52.
> >
> >
>
>
Message 3
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| Subject: | Generator Warning Light ON in flight |
--> Yak-List message posted by: "Royden Heays" <HEAYSR@telus.net>
Wes,
Armed with your good tips, the grey box is now out. Can't find anything
cracked or broken in there. As Mark suggests, it looks like a
replacement regulator might be necessary (DMP200 unit). Then the grey
box has to go back in - horrors!
Many thanks for guidance,
Royden
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Wes Warner
Subject: Re: Yak-List: Generator Warning Light ON in flight
--> Yak-List message posted by: Wes Warner <ufo@outerlimits.org>
> I poked around in there today behind the instrument panel with your
> email beside me. Got the lid off the electrical box and using a mirror
> could not find any wires broken - but for sure I can't see everything.
> I saw the 3 plugs, 2 screws and 2 wires that you refer to, but
> hesitated to go further pending a few more tips from you.
Keep in mind, my wires weren't broken. It was the actual terminal on
the end of the wire, right where the solder ended. I had to push on the
wire to see that the terminal was broken.
> 1. Do you have to disconnect all the feeds to the instrument
panel
> and remove the instrument panel to get the box out or will the box
> slip through without disconnecting everything from the panel?
No. The box will come out under the panel. See next answer.
> 2. The two wires that you refer to - they appear rather short
and
> would restrict the rearwards movement of the box. It seems like one
> has to get the box unbolted, move it back about 6 inches to get
> access, then unscrew the wire terminals at their posts (looks
> difficult to do), then the box will come out. Am I right? - I don't
> see any easy wire disconnects there!
You're exactly right. Undo the canon plugs, unbolt the box, take the
top off, undo the 2 wires, then remove the box. It's a pain in the
butt.
> After all this, went for a short flight. Everything worked fine
> throughout the 67% RPM warm up - generator charging at 30 V - no
> warning light, but later at the 70% RPM mag check the gen warning
> light came on again and stayed on with the volt meter back at 24 V.
Wes
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