---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Fri 07/06/18: 5 ---------------------------------------------------------- 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 _____________________________________ Time: 01:04:35 AM PST US Subject: Yak-List: External Tanks - how to wire them From: "Yakjumper" 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 _____________________________________ Time: 04:55:07 AM PST US Subject: Yak-List: Re: CJ Prop Blade Angle Procedure From: "PS" 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 _____________________________________ Time: 06:24:59 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: 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 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 _____________________________________ Time: 10:34:38 AM PST US From: "Walter Lannon" Subject: Re: Yak-List: 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 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 5 _____________________________________ Time: 01:51:16 PM PST US Subject: Yak-List: Re: CJ Prop Blade Angle Procedure From: "PS" 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 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.