Today's Message Index:
----------------------
1. 01:04 AM - External Tanks - how to wire them (Yakjumper)
2. 04:55 AM - Re: CJ Prop Blade Angle Procedure (PS)
3. 06:24 AM - Re: External Tanks - how to wire them (A. Dennis Savarese)
4. 10:34 AM - Re: Re: CJ Prop Blade Angle Procedure (Walter Lannon)
5. 01:51 PM - Re: CJ Prop Blade Angle Procedure (PS)
Message 1
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| Subject: | External Tanks - how to wire them |
Hi,
got a Yak 52 which has external tanks, but they were not used by the previous owner.
Pumps and cables were removed and not installed again after the plane was
shipped in a container.
So I got a new cable set and switch box from the avionics shop, pumps and parts.
But there is no fuel level sensor/switch in the external tanks. My other 52 has
a fuel level sensor and the light shows red/green. So I know when the tank is
empty.
Is there a way to use a fuel pressure switch (6psi), or a fuel flow sensor in line
instead ? Or must it be a level switch/float in the tank ? That would not
be that easy to install.
thx
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481434#481434
Message 2
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| Subject: | Re: CJ Prop Blade Angle Procedure |
Hello Walt,
Thank you for the reply.
I used 16 deg at 1000mm and I will check the scribe marks. I will fly when able
to see how my settings affect the engine rpm.
Something I noticed, maybe normal, the prop without the oil dome reservoir goes
well beyond the 31.5 degree max. Is that normal?
I assume the max bladed angles are measured with the oil dome installed. Is there
a prop manual I can reference? My books did not come with one.
Phil
--------
Phil
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481435#481435
Message 3
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| Subject: | Re: External Tanks - how to wire them |
You can install one of these off of a T fitting on the output of the pump.
=C2- Wire it so it shuts the pump off when fuel pressure is lost.https://
www.jegs.com/i/JEGS/555/11206/10002/-1?CAWELAID=1710870554&CAGPSPN=pla&
CAAGID=39714413703&CATCI=pla-457013475083&CATARGETID=2300061800403574
66&cadevice=c&jegspromo=nonbrand&gclid=EAIaIQobChMIt9C3o8aK3AIVUSWBCh
3xWwaXEAQYAiABEgK0KfD_BwE
Dennis
From: Yakjumper <tobias@macnews.de>
To: yak-list@matronics.com
Sent: Friday, July 6, 2018 4:07 AM
Subject: Yak-List: External Tanks - how to wire them
Hi,
got a Yak 52 which has external tanks, but they were not used by the previo
us owner. Pumps and cables were removed and not installed again after the p
lane was shipped in a container.
So I got a new cable set and switch box from the avionics shop, pumps and p
arts.
But there is no fuel level sensor/switch in the external tanks. My other 52
has a fuel level sensor and the light shows red/green. So I know when the
tank is empty.
Is there a way to use a fuel pressure switch (6psi), or a fuel flow sensor
in line instead ? Or must it be a level switch/float in the tank ? That wou
ld not be that easy to install.
thx
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481434#481434
S -
WIKI -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
Message 4
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| Subject: | Re: CJ Prop Blade Angle Procedure |
Hi Phil;
16 Deg. +/- 10 Min. is the correct setting for the low pitch angle so,
assuming that had not been disturbed earlier, you will see absolutely no
change in engine RPM.
What you may see is an increase in engine roughness if there is now any
difference between the two blade angles. What did you measure the blade
angles with?
The high pitch stop is integral with the pitch change piston (the ring held
in place by two cotter pins).
What torque did you use for the blade retaining bolts? These are referred
to as the "Jesus" bolts for a very good reason.
Yes, there is a manual. It is the PT6 Component Overhaul Manual. Doug
stocks it.
Walt
-----Original Message-----
From: PS
Sent: Friday, July 06, 2018 4:54 AM
Subject: Yak-List: Re: CJ Prop Blade Angle Procedure
Hello Walt,
Thank you for the reply.
I used 16 deg at 1000mm and I will check the scribe marks. I will fly when
able to see how my settings affect the engine rpm.
Something I noticed, maybe normal, the prop without the oil dome reservoir
goes well beyond the 31.5 degree max. Is that normal?
I assume the max bladed angles are measured with the oil dome installed. Is
there a prop manual I can reference? My books did not come with one.
Phil
--------
Phil
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481435#481435
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Message 5
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| Subject: | Re: CJ Prop Blade Angle Procedure |
I refinished my hub and blades recently, so I loosened the clamps. There was also
vibration I had hoped to eliminate or lessen.
I have a digital level I used successfully on my Yaks.
I use 55 ft lbs and tighten to align for the cotter pin.
I found a prop manual while digging thru my pile, by PZL which came with one of
my past Yaks. I will contact Doug next week for his manual.
I will run the CJ Sunday to see where I am. My concern is someone overseas, adjusted
the governor to the incorrect blade angle. I read the procedure for proper
setup in my PZL manual.
Phil
--------
Phil
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481445#481445
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