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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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 Posted: Fri Dec 02, 2011 8:08 am Post subject: Primer Kit Installed |
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The other implication of John's statement is that you should run your two
stroke wide open to prevent lubrication problems. If you run your engine
within the range published by the engine manufacturer, and you properly set
up your injection system and/or mix your fuel correctly you will not have
any lubrication problems.
Jack B. Hart FF004
Jack H/Gang:
Should have done a better job on my last post.
Yes, run the two stroke wide open on takeoff and at other times when deemed
necessary.
I was thinking more in the way of keeping the engine cleared out by
operating at the manufacturer's recommended power setting for an airplane.
The slower a two stroke is operated, the more oil will be retained in the
engine.
john h
mkIII
Titus, Alabama
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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captainron1(at)cox.net
Guest
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| Posted: Fri Dec 02, 2011 9:09 am Post subject: Primer Kit Installed |
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My take on idle is that John is right, about the idle being a motor destructor on a 2cycle, all the more so when people use 100/1 ratio. there is simply not enough oil at these low rpm's to coat the cyl walls, surfaces effectively, at higher revs plenty of fuel/oil are running through and there is enough residual oil left to keep everything lubed, too little in my opinion but I keep hearing about that phenomenal ratio so I have to believe it be true.
Anyway I do 40/1 and if it starts being too gooi than 45/1 till I get as much oil in there as I can without fouling, the caveat is synthetic oil. Oh yes I also usually use a hotter plug.
Ron (at) KFHU
========================
---- David Kulp <undoctor(at)ptd.net> wrote:
=============
Kolbers,
I generally allow my FF to idle for a minute or two after landing to
cool it down. Is this counter-productive? I like my engine and want to
treat it with as much kindness as I can.
Dave Kulp
Bethlehem, PA
FireFly 11DMK
On 12/1/2011 10:21 PM, John Hauck wrote:
| Quote: |
Also, when I tore down the 447 and the Victor 1+, I was amazed as to how
much oil was inside the engine.
Jack B. Hart FF004
Jack H/Kolbers:
Got to turn the engines to clear the crankcases.
Low rpm's on a two stroke is murder on them. They like to turn.
john h
mkIII
Titus, Alabama
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--
kugelair.com
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beauford
Joined: 25 Apr 2007
Posts: 127
Location: Brandon, FL
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| Posted: Fri Dec 02, 2011 3:05 pm Post subject: Primer Kit Installed |
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Brother Hart:
I enjoyed your detailed items on primer-bulb plumbing... Very instructive,
sir... Thanks for those.
You mentioned that the cause for your 447 problem was "contaminated
Amsoil"... Would you mind elaborating on how that
Amsoil problem occurred? Was it due to the age of the oil, or some other
factor(s)...?
Appreciate it...
Curious beauford
FF-076
Brandon, FL
--
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Fri Dec 02, 2011 3:59 pm Post subject: Re: Primer Kit Installed |
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| beauford wrote: | Brother Hart:
<snip>
You mentioned that the cause for your 447 problem was "contaminated
Amsoil"... Would you mind elaborating on how that
Amsoil problem occurred? Was it due to the age of the oil, or some other
factor(s)...?
Appreciate it...
Curious beauford
FF-076
Brandon, FL
-- |
Has something gotten lost in the translation here? Contaminated Amsoil?
I was told to use Amsoil in my Rotax 277 back in the Hummer/1983 days, and the 277 was not happy at 100:1. I broke it in at 50:1, then went to 75:1, and everything was lovely. Went to 100:1 and after about an hour in flight, the thing started to rattle! I nursed it home, dreading the worst. The next day, since I figured it was toast anyway, decided to see what would happen if I took it back to 50:1 for a bit - started it up at 50:1 and in just a few seconds the rattle went away, and many years later it had 750 hours on it when I sold it. It was on it's second piston/ring set.
Concerning using ether to start an engine: the 532 I had on my Anglin J-6 was always the most contrary starting engine I have ever had - don't know why - but when cold it required ether to start. Sprayed a shot of ether on the air cleaner and pulled the rope and away she would go. Never had any problems that could have been related to using ether.
On the MKIII/582, I do not have starting problems, but if it gets contrary, I have no qualms at all about using a shot of ether on the air cleaner. OTOH, I can see where giving it a shot down the carb throat into the crank could be a short trip to a quick engine death... Years ago I had a VW Dasher diesel, and on one occasion when it was below freezing and the stupid car would not start, I gave it a shot of ether. It survived - barely - but I will NEVER do that again...
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_________________
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing. |
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jbhart(at)onlyinternet.ne
Guest
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| Posted: Fri Dec 02, 2011 7:36 pm Post subject: Primer Kit Installed |
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At 06:02 PM 12/2/11 -0500, you wrote:
| Quote: |
Brother Hart:
I enjoyed your detailed items on primer-bulb plumbing... Very instructive,
sir... Thanks for those.
You mentioned that the cause for your 447 problem was "contaminated
Amsoil"... Would you mind elaborating on how that
Amsoil problem occurred? Was it due to the age of the oil, or some other
factor(s)...?
Appreciate it...
Curious beauford
|
Beauford,
| Quote: | From my flight log: June 25, 2001 Flight 144 - 3 minutes, 57:36 tt. Tried
the aluminum foil and acrylic glue on the axles and it seemed to work.
|
Pulled it out and went flying. Took off to the south on the center taxiway.
Climbed at 6400 rpm at 50 mphi. Just about 1500 agl the engine rpm dropped
200, and I jiggled the throttle and it quit. Banked 180 and headed for the
airport at 40 mphi. I jigged a little to see if there was something under
me that I could land on, but it was all tall corn and beans. I made it to
with in 100 yards of the airport and landed in a bean field with the rows
where the beans were about six inches high............................
On tear down, I discovered the inside head and top piston surfaces glazed
with hard carbon that look almost like black glass. It was very difficult
to remove. Also the same material was found under the piston rings. I
believe this is what caused the seizure. The rings could not expand, move
and collapse back into the piston slot. Running the engine hard with the
aluminum pistons expanding faster than the steel cylinder liners generated
too much heat and scored the piston. At the time I was running with just
one EGT and it of course was on the cylinder that did not seize. I looked
at everything that I thought could have caused the problem. Finally, I
checked out my oil.
Early on I had decided to use Amsoil and I purchased a case in late 1998 and
stored it in my hangar in the Mississippi River bottoms. So the oil had
been in an essentially 100% humidity environment for 2.5 years. When I
dumped the remaining oil out of the last bottle opened, I found a black
residue in the bottom of the bottle. So then I opened a bottle from the
bottom of the case that had been setting on the gravel hangar floor and
poured it over into the bottle I had just emptied. There was about a half
inch of jelled material in the bottom of the bottle. I called Amsoil and
explained what I was seeing. After a bit of silence, I was asked what was
the tint of the plastic bottle. Then I found out that they had been using a
plastic that that held the oil in but did not keep the moisture out. Amsoil
likes to adsorb water, which changes its composition. He said they had
changed plastics and it was no longer a problem.
I recycled the last of the oil and purchase a new case. But after I got the
447 running again, I found I had lost faith in the product. I sold what
remained of the new case to a retailer and I changed to Opti-2.
So if you use Amsoil, keep it capped tight after opening the bottle for the
first time.
Jack B. Hart FF004
Winchester, IN
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slyck(at)frontiernet.net
Guest
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| Posted: Fri Dec 02, 2011 9:54 pm Post subject: Primer Kit Installed |
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Sad but true, plastic containers transfer atmosphere and moisture over time. urethanes and, I suppose, other
like pigments will congeal over time. Metal or glass is the only way to go.
BB
mkIII, suzuki
On 2, Dec 2011, at 10:39 PM, Jack B. Hart wrote:
| Quote: |
At 06:02 PM 12/2/11 -0500, you wrote:
>
>
>
> Brother Hart:
>
> I enjoyed your detailed items on primer-bulb plumbing... Very instructive,
> sir... Thanks for those.
>
> You mentioned that the cause for your 447 problem was "contaminated
> Amsoil"... Would you mind elaborating on how that
> Amsoil problem occurred? Was it due to the age of the oil, or some other
> factor(s)...?
>
> Appreciate it...
>
> Curious beauford
Beauford,
> From my flight log: June 25, 2001 Flight 144 - 3 minutes, 57:36 tt. Tried
the aluminum foil and acrylic glue on the axles and it seemed to work.
Pulled it out and went flying. Took off to the south on the center taxiway.
Climbed at 6400 rpm at 50 mphi. Just about 1500 agl the engine rpm dropped
200, and I jiggled the throttle and it quit. Banked 180 and headed for the
airport at 40 mphi. I jigged a little to see if there was something under
me that I could land on, but it was all tall corn and beans. I made it to
with in 100 yards of the airport and landed in a bean field with the rows
where the beans were about six inches high............................
On tear down, I discovered the inside head and top piston surfaces glazed
with hard carbon that look almost like black glass. It was very difficult
to remove. Also the same material was found under the piston rings. I
believe this is what caused the seizure. The rings could not expand, move
and collapse back into the piston slot. Running the engine hard with the
aluminum pistons expanding faster than the steel cylinder liners generated
too much heat and scored the piston. At the time I was running with just
one EGT and it of course was on the cylinder that did not seize. I looked
at everything that I thought could have caused the problem. Finally, I
checked out my oil.
Early on I had decided to use Amsoil and I purchased a case in late 1998 and
stored it in my hangar in the Mississippi River bottoms. So the oil had
been in an essentially 100% humidity environment for 2.5 years. When I
dumped the remaining oil out of the last bottle opened, I found a black
residue in the bottom of the bottle. So then I opened a bottle from the
bottom of the case that had been setting on the gravel hangar floor and
poured it over into the bottle I had just emptied. There was about a half
inch of jelled material in the bottom of the bottle. I called Amsoil and
explained what I was seeing. After a bit of silence, I was asked what was
the tint of the plastic bottle. Then I found out that they had been using a
plastic that that held the oil in but did not keep the moisture out. Amsoil
likes to adsorb water, which changes its composition. He said they had
changed plastics and it was no longer a problem.
I recycled the last of the oil and purchase a new case. But after I got the
447 running again, I found I had lost faith in the product. I sold what
remained of the new case to a retailer and I changed to Opti-2.
So if you use Amsoil, keep it capped tight after opening the bottle for the
first time.
Jack B. Hart FF004
Winchester, IN
|
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