Today's Message Index:
----------------------
1. 04:34 AM - Changing a Yak-55 to a 55M (Richard Goode)
2. 05:29 AM - Re: CJ Engine Dieseling (A. Dennis Savarese)
3. 08:15 AM - Changing a Yak-55 to 55M? (Yak 55M for sale) (Mark Schrick)
4. 09:50 AM - Changing a Yak-55 to 55M? (Mark Jefferies YAK UK)
5. 10:30 AM - dieseling (Jerry Painter)
6. 02:09 PM - Re: Changing a Yak-55 to 55M? (Yak 55M for sale) (Roger Kemp)
7. 04:38 PM - Re: Changing a Yak-55 to 55M? (Yak 55M for sale) (Sarah Tobin)
8. 05:27 PM - Mayport NS Warbird Rally (Shane Golden)
9. 05:53 PM - Yak 55 parting out (Sarah Tobin)
10. 09:09 PM - Re: CJ Engine Dieseling (Desmor944@aol.com)
Message 1
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| Subject: | Changing a Yak-55 to a 55M |
Yes, it can fit the other way.
Richard
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Scott Poehlmann
Sent: 07 June 2006 00:10
Subject: Re: Yak-List: Changing a Yak-55 to a 55M
Do I presume that it works the other way around as well?
Hmmm...
Scott
----- Original Message -----
From: Richard Goode <mailto:richard.goode@russianaeros.com>
Sent: Tuesday, 06 June, 2006 10:12
Subject: Yak-List: Changing a Yak-55 to a 55M
Yes, there is no problem to bolt the wings on directly but why would you
given that the educated view is that the 55 is a better aircraft than the
55M?
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com <http://www.russianaeros.com>
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Message 2
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| Subject: | Re: CJ Engine Dieseling |
--> Yak-List message posted by: "A. Dennis Savarese" <dsavarese@elmore.rr.com>
Phil,
This condition can occur for a multitude of reasons:
- Built-up carbon in the ignition chamber can glow red after the engine is
off, providing a mechanism for sparking unburnt fuel. Such a thing can
happen when the engine runs very rich, depositing unspent fuel and particles
on the pistons and valves. Similarly, non-smooth metal regions within the
piston chamber can cause this same problem, for they can glow red. It has
also been suggested that an improperly rated sparkplug can retain heat and
cause the same problem.
- A carburetor that does not close entirely can contribute to running once
the engine is off, for the extra fuel and oxygen mixture can combust easily
in the warm piston chamber. Similarly, hot vaporized oil gases from the
engine crankcase and provide ample fuel for dieseling.
- Incorrect timing.
- An engine that runs too hot or too lean may produce an environment
conducive to allowing unspent fuel to combust.
- An idle speed that is too fast can leave the engine with too much angular
momentum upon shutdown, raising the chances that the engine can turnover and
combust more fuel and lock itself into a cycle of continuous running.
Here are a few links that may help in solving your problem. Personally, if
you haven't done so already, I would start adding MMO to the fuel at the
rate of 6 oz. per 15 gallons. Do it religiously and interpolate the amount
you need prior to fueling.
http://www.jeepster.org/swchapter/dieseling.html
http://www.cartalk.com/content/columns/Archive/1995/May/13.html
http://www.misterfixit.com/diesling.htm
Dennis
----- Original Message -----
From: PSalter@aol.com
Sent: Tuesday, June 06, 2006 6:13 PM
Subject: Yak-List: CJ Engine Dieseling
I have had my engine continue to run roughly thru a couple of revolutions
(not kick backwards) after the mags have been switched off. The engine has
about 35 hours since major and the plugs are clean. I have been running a
mix of Auto and 100LL but had the same problem with straight 100LL .
What can I do to stop the dieseling?
Phil
Message 3
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| Subject: | Changing a Yak-55 to 55M? (Yak 55M for sale) |
--> Yak-List message posted by: "Mark Schrick" <schrick@pacbell.net>
If any of the Yakers are interested I have a 1992 Yak 55M for sale. 190TT
everything new and upgraded. Contact me off line if you know of anyone
interested.
Mark "SHREK" Schrick
(408) 323-5150
San Jose, Ca
Message 4
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| Subject: | Changing a Yak-55 to 55M? |
--> Yak-List message posted by: "Mark Jefferies YAK UK" <mj@yakuk.com>
Paul, the long wing a/c is better for many reasons.
It has only one down side and that is roll not as fast. Neither a/c as
standard are suitable for UNL now unless....you put in 400, 430 or even the
450 HP engines, now you have a cheap UNL a/c. With the 430 HP you will have
better power than weight ratio.
With a SU at over 200,000 USD and a 55 at around 70,000 put on a 430 with MT
prop your at least 100,000 USD better of !! .
Cheers, mj
>--> Yak-List message posted by: Paul <jpblake@yahoo.com>
>
>Changing a Yak-55 to 55M?
>
>Can an early Yak-55 long wing be safely changed to a
>short wing 55M? What should one look for to see if the
>change has been done properly?
>
>Paul
Message 5
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Hi Phil--
Dieseling is usually caused by something hot in the cylinder--carbon etc.
Too hot spark plugs (wrong heat range) may cause it, too. Detonation is
the
real danger that could lead to catastrophic engine failure. We don't shu
t
down with fuel shutoff, just ignition, so fuel and air continue to be suc
ked
into the engine and anything hot enough will ignite it. That's why you p
ush
the throttle wide open as you shut down--cooling air.
Jerry Painter
Wild Blue Aviation
425-876-0865wild.blue@verizon.net
http://mysite.verizon.net/res0cs5r/index.html
Message 6
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| Subject: | Changing a Yak-55 to 55M? (Yak 55M for sale) |
--> Yak-List message posted by: "Roger Kemp" <viperdoc@mindspring.com>
Shrek,
You may want to contact Smash. Since her 55 got smashed by a tornado. Last
I heard she was looking at one down in Tx.
Smash you lurking around?
Doc
> [Original Message]
> From: Mark Schrick <schrick@pacbell.net>
> To: <yak-list@matronics.com>
> Date: 6/7/2006 10:29:27 AM
> Subject: Yak-List: Changing a Yak-55 to 55M? (Yak 55M for sale)
>
> --> Yak-List message posted by: "Mark Schrick" <schrick@pacbell.net>
>
> If any of the Yakers are interested I have a 1992 Yak 55M for sale. 190TT
> everything new and upgraded. Contact me off line if you know of anyone
> interested.
>
> Mark "SHREK" Schrick
> (408) 323-5150
> San Jose, Ca
>
>
>
>
>
>
>
Message 7
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| Subject: | Changing a Yak-55 to 55M? (Yak 55M for sale) |
I'm here, ya Shrek, if you want to email me off line, my email is AerobaticGirl@yahoo.com
Smash
Roger Kemp <viperdoc@mindspring.com> wrote:
--> Yak-List message posted by: "Roger Kemp"
Shrek,
You may want to contact Smash. Since her 55 got smashed by a tornado. Last
I heard she was looking at one down in Tx.
Smash you lurking around?
Doc
> [Original Message]
> From: Mark Schrick
> To:
> Date: 6/7/2006 10:29:27 AM
> Subject: Yak-List: Changing a Yak-55 to 55M? (Yak 55M for sale)
>
> --> Yak-List message posted by: "Mark Schrick"
>
> If any of the Yakers are interested I have a 1992 Yak 55M for sale. 190TT
> everything new and upgraded. Contact me off line if you know of anyone
> interested.
>
> Mark "SHREK" Schrick
> (408) 323-5150
> San Jose, Ca
>
>
>
>
>
>
>
__________________________________________________
Message 8
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| Subject: | Mayport NS Warbird Rally |
Thought you guys might like to see a couple of pictures from the Mayport
Fly-In.
It was one helluva party!!
We had around 30 aircraft, T-28's, T-6's, T-34's, L-39's, CJ-6's and a
Yak-52.
Shane
Message 9
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| Subject: | Yak 55 parting out |
From : Drew Hurley <attydhurley@msn.com> Sent : Tuesday,
June 6, 2006 7:52 PM To : Acro@aerobatics.ws Subject : [Acro] Yak 55M
Parting Out | | |
It appears that I'm not going to have the time to rebuild my 55M damaged in an
off airport landing. Wings and tail feathers are perfect. Engine core.
Misc parts, tools, etc. Contact me with request and offer. US only due to
difficulty in shipping elsewhere. Drew Hurley attydhurley@msn.com
__________________________________________________
Message 10
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| Subject: | Re: CJ Engine Dieseling |
In a message dated 6/6/2006 7:14:40 PM Eastern Daylight Time, PSalter@aol.com
writes:
> I have had my engine continue to run roughly thru a couple of revolutions
> (not kick backwards) after the mags have been switched off. The engine has
> about 35 hours since major and the plugs are clean. I have been running a mix
> of Auto and 100LL but had the same problem with straight 100LL .
>
> What can I do to stop the dieseling?
>
>
Phil,
Dennis makes many good points, and Jerry may have nailed the answer.
Referring to the CJ Service & Maintenance Manual (Shutdown of the Engine,
pg.203):
1. Set throttle for 700-800 rpm to cool the engine, and make cylinder head
temperature not higher than 150 deg.C if ambient air is below 25 deg.C or not
higher than 165 deg.C if ambient is above 25 deg.C.
2. Set throttle for 1,900 rpm for 10 - 15 seconds to burn off the plugs.
"Then set the throttle in the position corresponding to 600 - 700 rpm, cut off
the magneto switch, and set the throttle to fully opened position smoothly."
This technique will likely eliminate the tendency for the engine to run on,
particularly with higher ambient temperatures.
Rich
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