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To all those that think they are mechanics I offer this!

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vectorwarbirds(at)aol.com
Guest

Posted: Tue Jan 19, 2010 4:45 pm Post subject: To all those that think they are mechanics I offer this!

Many have asked me over the years "Is it easy to install?"  That my flying friends is subjective!  I offer this picture of something that to this guy was easy to install.  You will notice not only the ground down Nanchang fitting to fit the God knows what hose but also the cheap brass hose ferrules and some kind of what I think is tractor hose.  "Hey if its good enough for John Deere its good enough for a Chinese airplane!"  This was the main oil hose from the tank to the engine.  This is but one of many, many things I have seen over the years done by so called 'mecankics'. 

 

 Let me remind you it does not matter what kind or where the aircraft was manufactured, all that matters is that its your ass up there in the air! 

 

 No I shall not mention the name of the said 'mecankic' and as you can see I have blocked off his name to protect the guilty.  

 

 Cheers and safe flying!

 

 TGB

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keithmckinley

Joined: 11 Aug 2008
Posts: 434

Posted: Tue Jan 19, 2010 9:01 pm Post subject: Re: To all those that think they are mechanics I offer this!

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Last edited by keithmckinley on Thu Jan 21, 2010 3:41 pm; edited 1 time in total

mark.bitterlich(at)navy.m
Guest

Posted: Wed Jan 20, 2010 8:23 am Post subject: To all those that think they are mechanics I offer this!

Good picture.  



But I am at a little bit of a loss.  I asked whether Vectorwarbirds

would make hoses and fittings for putting in any of the oil shutoff

valves that you sell, and your answer was that it was too hard to make

kits for so many different kinds of aircraft.  



So in order to avoid this kind of disaster down the road, could you

possibly suggest a good place to have hoses made that would connect to

the existing M-14 engine and also to your various types of shut off

valves?  Would Kevin Kimball be a good person to go to?  



Without knowing a good place to go, people sometimes try to do the work

themselves, and this happens.  

    



Mark Bitterlich

 



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vectorwarbirds(at)aol.com
Guest

Posted: Wed Jan 20, 2010 9:06 am Post subject: To all those that think they are mechanics I offer this!

Mark,

 

 Any good aviation supply house can make hoses.  I think you can even order them from Aircraft Spruce giving them the length.  The real problem is that the valves come with an AN-12 (U.S.)  outlet hose fitting and our engines have a metric fitting of basically the same size but different threads (metric) on the engine.  We in turn use the stock hose or new US hose, leave the stock metric fitting on one end and then shorten the hose to fit as the new valve makes this necessary and then install a new AN-12 hose fitting that now mates to the valve. So metric on one end and AN on the other.

 

 Its not really a lot of trouble but you do have to know how to make up an aircraft type hose.  This means purchasing the -12 hose making mandrel so that you do not cut a flap of  rubber inside the hose and cause it to close off.  The hoses from the tank to the engine are not under pressure so they are not prone to leaking, so really the type of fittings and hoses we and the Chinese use are overkill.  

 

 If I was most and had basis mechanical skills, tools and knowledge I would buy the mandrel and parts I needed and make up the hose myself as its not really hard. Also of note is that you can use U.S. AN -12 Aeroquip 303 hose with the large Chinese fittings and we have done this many times. But its about the only hose you can use with them. 

 

 Trying to make up a general kit for such a limited item (I have found most people won't invest in excellent engine mods over gadgets in the cockpit) is not cost effective given the many different Russian aircraft types so we just don't do it.  So as I said you must have some pretty good mechanical abilities or take it to someone who does.  But in my personal opinion and experience the oil tank shut off valve is one of the best mods that can be done to the radial engine bar none.

 

 Also of note is that our manual valves do not come with the operating cable because people put it in so many various places because of gagets they have installed in the cockpit, so trying to have a standard install across the board just doesn't work.  So once they figure out where they can install the push pull cable they just buy it from AC Spruce.  The last one we did we put the cable handle just in front of the stock starter switch (Nanchang) so that when the valve is shut off the cable handle is up in front of the starter switch blocking it.  Also there is a starter interlock switch on the valve so that it will not start unless the valve is fully open.  

 

 Thanks for your question and if I can be of help just let me know.  But I encourage everyone to install a shut off valve, its very cheap insurance over buying a new engine or having one fail because of hydro lock and it also saves oil.   Bill Blackwell has installed many of these valves so he is the best go to install guy I know.  

 

 Cheers and safe flying!

 TGB

 

   

 

  

   

 

   

 

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mark.bitterlich(at)navy.m
Guest

Posted: Wed Jan 20, 2010 9:29 am Post subject: To all those that think they are mechanics I offer this!

Thank you for this well thought out and accurate answer TGB. 



Your answer gives me, as well as everyone else, a clear picture of the

issues at hand.  



Kevin Kimball sometimes reads this list, so I will take a wild chance

here and post a question to him that maybe he could answer. 



I notice that Kevin Kimball Enterprises sells a kit called the M-14P1

that converts all the M-14 fittings to accept AN type hoses.  



Can KKE sell just the adapter fittings necessary so that a person can

run a complete AN hose from engine to oil tank, with AN fittings every

step of the way.  From engine, to shutoff valve, to tank.  ALL AN

fittings?  No metric to AN hoses necessary???  



Thanks, 



Mark Bitterlich

 



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vectorwarbirds(at)aol.com
Guest

Posted: Wed Jan 20, 2010 9:41 am Post subject: To all those that think they are mechanics I offer this!

Mark if I remember correctly you have to buy the whole kit from Kimball to convert. But that might have changed.  I have converted my AC to all AN pretty much.  Just makes it easier done the road.  I just bought a AN -12 nipple and had it welded on the stock inlet tube, pretty easy.  

 

 TGB

 

   

 

  

   

 

   

 

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Dale

Joined: 30 May 2007
Posts: 178

Posted: Wed Jan 20, 2010 12:42 pm Post subject: Re: To all those that think they are mechanics I offer this!

US Aeroquip AN-12 303 fitting with Metric Nut

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mark.bitterlich(at)navy.m
Guest

Posted: Thu Jan 21, 2010 9:33 am Post subject: To all those that think they are mechanics I offer this!

Roger that.  More good advice.  Thanks! 



Mark

 



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