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Power loss

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havard.dale(at)yaknorway.
Guest

Posted: Fri May 31, 2013 5:51 pm Post subject: Power loss

Hi,



My friend went out for a flight today with his Yak 52W.



After take off with booster pump on Fuel press decreased and engine lost power. He had enough power to returne for landing. 



Have checked all Fuel filters and no findings except small signs off water in the water seperator just after Fuel shut off cock. 



Any suggestions of what to check?



Best regards



Havard Dale

Norway



Sendt fra min iPad



Den 22. mai 2013 kl. 09:02 skrev Yak-List Digest Server <yak-list(at)matronics.com>:



 	  Quote: 	
		   *

 

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           ----------------------------------------------------------

                           Yak-List Digest Archive

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                     Total Messages Posted Tue 05/21/13: 3

           ----------------------------------------------------------

 

 

 Today's Message Index:

 ----------------------

 

     1. 08:58 AM - Hydraulic Lock  (Richard Goode)

     2. 09:30 AM - Re: Hydraulic Lock  (Jan Mevis)

     3. 01:25 PM - Real nice CJ for Sale  (Elmar & Manuela Hegenauer)

 

 

 

 ________________________________  Message 1  _____________________________________

 

 

 Time: 08:58:22 AM PST US

 From: "Richard Goode" <richard.goode(at)russianaeros.com>

 Subject: Hydraulic Lock

 

 For those who enjoy mechanical mayhem, this is a cylinder and broken

 connecting-rod from a M 14 V, the helicopter version of the "P". After the

 rod broke, the pilot in Hungary continued to fly for about 25 minutes

 (remember they have two of the engines, and tend to use 103/104% to get a

 bit of extra load capacity for crop-spraying), before landing and saying

 that "the left engine is a little down on power"!

 

 

 Richard Goode Aerobatics

 Rhodds Farm

 Lyonshall

 Herefordshire

 HR5 3LW

 United Kingdom

 

 Tel:  +44 (0) 1544 340120

 Fax: +44 (0) 1544 340129

 www.russianaeros.com

 

 ________________________________  Message 2  _____________________________________

 

 

 Time: 09:30:55 AM PST US

 Subject: Re: Hydraulic Lock

 From: Jan Mevis <jan.mevis(at)informavia.be>

 

 

 Amazing!!!!

 

 On 21/05/13 17:55, "Richard Goode" <richard.goode(at)russianaeros.com> wrote:

 

> For those who enjoy mechanical mayhem, this is a cylinder and broken

> connecting-rod from a M 14 V, the helicopter version of the "P". After the

> rod broke, the pilot in Hungary continued to fly for about 25 minutes

> (remember they have two of the engines, and tend to use 103/104% to get a

> bit of extra load capacity for crop-spraying), before landing and saying

> that "the left engine is a little down on power"!

> 

> 

> Richard Goode Aerobatics

> Rhodds Farm

> Lyonshall

> Herefordshire

> HR5 3LW

> United Kingdom

> 

> Tel:  +44 (0) 1544 340120

> Fax: +44 (0) 1544 340129

> www.russianaeros.com

 

 

 ________________________________  Message 3  _____________________________________

 

 

 Time: 01:25:23 PM PST US

 From: Elmar & Manuela Hegenauer <samira.h(at)shaw.ca>

 Subject: Real nice CJ for Sale

 

 *_MAKE OFFER_*

 

 I am selling my super nice and

 very clean CJ.

 

 It has all the bells and whistles

 and is one of the lowest time

 Nanchangs available.

 

 Over the years I have invested

 around $200,000, it has lots

 of upgrades and approved mods.

 

 If one is seriously interested,

 please contact me off list and

 make me a reasonable offer,

 it might be your lucky day.

 

 Please see attachments.

 

 cheers

 

 Elmar

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Dale

Joined: 30 May 2007
Posts: 178

Posted: Sat Jun 01, 2013 6:03 pm Post subject: Re: Power loss

Check the lines and all the inbound fuel connections and gaskets on the screen shutoff.  Could be you are sucking air in somewhere and not fuel.

If the flapper/check valve gets stuck you could also see a restricted fuel flow.  The flapper valve is under your left foot beneath the floorboard.  This check valve can also cause you problems when trying to prime the system by not shutting off as well so you would not get a good prime or a good fuel jump on the system side as well.

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GeorgeCoy

Joined: 02 Dec 2010
Posts: 310

Posted: Sat Jun 01, 2013 6:17 pm Post subject: Power loss

Please send a picture of the fuel cap for the aux tank and a picture of the bottom of the Wing aux drain as this is a known issue on 52W airplanes water in the fuel thank you George Coy



Sent from my iPhone



On Jun 1, 2013, at 10:03 PM, "Dale" <dale(at)frii.com> wrote:



 	  Quote: 	
		   

 

 Check the lines and all the inbound fuel connections and gaskets on the screen shutoff.  Could be you are sucking air in somewhere and not fuel.

 If the flapper/check valve gets stuck you could also see a restricted fuel flow.  The flapper valve is under your left foot beneath the floorboard.  This check valve can also cause you problems when trying to prime the system by not shutting off as well so you would not get a good prime or a good fuel jump on the system side as well.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=401777#401777

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