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CJ-6 oil thinning system

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keithmckinley

Joined: 11 Aug 2008
Posts: 434

Posted: Wed Aug 13, 2008 8:04 pm Post subject: CJ-6 oil thinning system

Can anyone give me the best method for disabling this system.



Thanks,

Keith McKinley

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ChangDriver

Joined: 15 Sep 2007
Posts: 266

Posted: Thu Aug 14, 2008 5:12 pm Post subject: Re: CJ-6 oil thinning system

Keith:



Isn't oil thinning activated by a switch?  Why not cut the wires or wire the switch in the off position.



Craig

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wlannon(at)persona.ca
Guest

Posted: Thu Aug 14, 2008 6:35 pm Post subject: CJ-6 oil thinning system

Why not remove the entire system including wiring, cap off the fuel inlet at 

the pump "T" fitting and rivet or bolt a cover plate over the firewall hole.

This leaves you an extra switch position, eliminates the possibility of a 

fuel leak in the solenoid valve and leaves only one fuel pressure hose to 

inspect or replace at annual.



Walt

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keithmckinley

Joined: 11 Aug 2008
Posts: 434

Posted: Thu Aug 14, 2008 7:41 pm Post subject: Re: CJ-6 oil thinning system

little hesitant to disconnect or snip wires as something will still be live back there. I was thinking about yanking the solenoids during the next annual. has anyone actually done this mod?



Keith

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pilko2(at)btinternet.com
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Posted: Fri Aug 15, 2008 1:27 am Post subject: CJ-6 oil thinning system

Why take it out  at all ?



You may never need it in your local climate but you may just one day sell 

your bird  to somebody in colder climes.



Cheapest fix I can devise is a neat piece of duct tape over the switch !

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cjpilot710(at)aol.com
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Posted: Fri Aug 15, 2008 6:03 am Post subject: CJ-6 oil thinning system

You can also use it for your smoke system.  I installed a a smoke oil  tank the same size as my old Chinese ADF and mounted it on the same rack.   I than used an old 24 volt fuel pump to pump the oil  from the tank to the  solenoid valve and hence to the exhaust stack.  I installed new switch near  the throttle, and hooked the solenoid in series with the pump.  Thus when I  close the switch the pump comes on and the valve opens.  Has worked fine  for about 1,500 now.

  

 Jim "Pappy" Goolsby 

  

  In a message dated 8/14/2008 10:36:29 P.M. Eastern Daylight Time,  wlannon(at)persona.ca writes:

 [quote]-->    Yak-List message posted by: Walter Lannon    <wlannon(at)persona.ca>



Why not remove the entire system including    wiring, cap off the fuel inlet at 

the pump "T" fitting and rivet or bolt a    cover plate over the firewall hole.

This leaves you an extra switch    position, eliminates the possibility of a 

fuel leak in the solenoid valve    and leaves only one fuel pressure hose to 

inspect or replace at    annual.



Walt

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keithmckinley

Joined: 11 Aug 2008
Posts: 434

Posted: Fri Aug 15, 2008 6:06 am Post subject: Re: CJ-6 oil thinning system

I live in a cold climate and I'd never use it. Prior to this winter I'll have a heater installed on my oil tank. Something the Chinese should have done.



However, your point is a valid one.



Keith

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keith(at)mckinley.us
Guest

Posted: Fri Aug 15, 2008 6:16 am Post subject: CJ-6 oil thinning system

good stuff!!



K



On Aug 15, 2008, at 9:58 AM, cjpilot710(at)aol.com (cjpilot710(at)aol.com) wrote:

[quote]  You can also use it for your smoke system.  I installed a a smoke oil tank the same size as my old Chinese ADF and mounted it on the same rack.  I than used an old 24 volt fuel pump to pump the oil  from the tank to the solenoid valve and hence to the exhaust stack.  I installed new switch near the throttle, and hooked the solenoid in series with the pump.  Thus when I close the switch the pump comes on and the valve opens.  Has worked fine for about 1,500 now.

  

 Jim "Pappy" Goolsby 

  

  In a message dated 8/14/2008 10:36:29 P.M. Eastern Daylight Time, wlannon(at)persona.ca (wlannon(at)persona.ca) writes:

 [quote]

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wlannon(at)persona.ca
Guest

Posted: Fri Aug 15, 2008 5:05 pm Post subject: CJ-6 oil thinning system

Because it is a potential hazard from inadvertent operation or from a 

leaking solenoid valve.

Disabling the switch will take care of the first. The second requires at 

least removal of the fuel feed hose.



The need for oil dilution ended in virtually all climates with the advent of 

aviation multi-grade oils.

It was a "necessary evil" in the "good old days" of bush flying in the 

Canadian North. The idea was borrowed from some of the truck operators and 

developed for aircraft use by a gentleman named Tommy Siers in 1928 who just 

happened to be my boss when I started with the airlines in 1951.  That 

earned Tommy the McKee Trophy in 1940 for outstanding contribution to 

Canadian aviation. By that time it had been incorporated into most of the 

larger military and civil aircraft worldwide.



It served a useful purpose in those days but not without cost.  The sludge 

build up inside the engine and propellor dome became a major problem with 

later engines using 100/130 and 115/145 avgas due to the high lead (PB) 

content.  That was when the system was properly operated. When improperly 

operated the likely result was engine failure due to loss of lubrication.



Walt



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