Today's Message Index:
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1. 05:22 AM - Re: Oil injection? (JC Gilpin)
2. 06:54 AM - Re: Oil injection? (Thumper)
3. 08:19 AM - Re: Re: Oil injection? (John Hauck)
4. 08:47 AM - Re: Kolb STOL (John Hauck)
5. 01:56 PM - Re: to inject or not to inject... (George Bearden)
6. 07:59 PM - Re: Kolb STOL (Frankd)
7. 08:12 PM - Re: Kolb STOL (alienwes)
8. 08:37 PM - Re: Re: to inject or not to inject... (Jon LaVasseur)
9. 11:42 PM - Alvord video (Larry Cottrell)
Message 1
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Subject: | Re: Oil injection? |
A very timely discussion.
After a short flight yesterday, I found oil all over the front of the
engine. One of the delivery lines from the oil pump had cracked open at
the fitting on the pump. Sure lucky it wasn't a longer flight..... New
lines on order.....
JG
Message 2
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Subject: | Re: Oil injection? |
OK now. For disenting opinion on oil injection. Think of this scenario, you are
on a long climb out, you pull the throttle back and that small moment where
you go lean and egt's spike. With oil injection you still have good oil flowing
because your throttle setting is still pretty high, with premix you just went
lean on oil too. Or on an unloaded engine set at say 4500 for a decent but
the prop is unloaded so the engine isn't using much fuel, hence not much oil.
The Reason rotax was able to get them ASTM certified was because of the oil
injection. Do your maintenance, check cable is moving the oil pump lever on
your preflight, annually check the shaft that drives the pump, maybe replace the
pump annually if you want to and you will love your oil injection. It gets
a bad rap from older setups like the remote oil tank on early evinrude/johnson
outboards. Suzuki has always had the oil tank above the pump and probably has
never had lube failures? OR jet ski folks who just never added oil to the
tank. That Mikuni oil pump is well proven. BUT don't trust the stained oil level
mark in the tank, look inside. And monitor your oil usage to your fuel used
and calculate your fuel to oil ratio. If so I bet you will never have problems.
I love the oil injection, but of course I fly a lot. But I'm still an
old guy from the premix days but I learned. Thanks for listening, Dennis
--------
Dennis Long
Oakland TN
2000 Aeroprakt A20 Vista Cruiser
Previously Kolb Mark IIIC, 94 Firestar, 84 Ultrastar.
700+hours since 1/1/2009
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=427005#427005
Message 3
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Subject: | Re: Oil injection? |
I flew 785.0 hours on premixed fuel, back in the 80's. On flights to
the NE US with my 447 powered FS. I carried 12 quarts of Pennzoil for
air cooled engines. This was before Rotax recommended two stroke oil
for air cooled engines. Could not buy it locally. Made contact with
the SE US Pennzoil distributor to work out a plan to drop ship cases of
Pennzoil Air Cooled Oil to the Jiffy Lube in Montgomery, AL. Only had
one problem on cross country flights. Refueled at Norwich, NY. Dumped
in the amount of oil I needed, topped off with 100LL, and took off. Low
power on climb out. Looked behind me and saw a smoke screen. Pulled
the enricher full open. That gave me enough power to do a 180 and land.
Big mistake when I refueled. I forgot to rock the FS back and forth to
mix the oil. All the oil was in the bottom of the tank. My float bowl
was full of oil.
In 1992, I originally powered my newly constructed MKIII with a 582.
Used oil injection and loved it. Saved a lot of oil. Simplified cross
country flying. Put 225.0 hours on the 582 before I swapped it out of a
912 in 1993. If I was flying a two stroke, I would fly it with the oil
injection.
I believe to inject or not is a personal decision. Really doesn't
matter one way or the other.
Sorry for the late reply. First WIFI in a while.
john h
mkIII
Rifle, Colorado
Message 4
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This is not a take off, but a short field landing:
http://www.youtube.com/watch?v=oMYsdarPcnY
Here's a takeoff and landing:
http://www.youtube.com/watch?v=TXmqZBeWOrs
Kolbs are great super STOL aircraft.
john h
mkIII
Rifle, Colorado
-----Original Message-----
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com] On Behalf Of
alienwes
Sent: Saturday, July 19, 2014 10:18 PM
Subject: Kolb-List: Kolb STOL
<elliott.wesley@yahoo.com>
Can a Kolb Mark 3 take off like other STOL aircraft? I have
been watching youtube videos on short takeoffs. Lots of
Zenith, Kitfox, and Cubs. Is is just because their are less
Kolb out there?
--------
Wesley Elliott
Sport Pilot-PPC
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=426985#426985
=
Photoshare, and much much more:
=
=
=
Message 5
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Subject: | RE: to inject or not to inject... |
My only experience with oil injection was years ago on 2-stroke motorcycles.
I loved it. I used far less oil, I kept my hands clean when fueling, the
engine carboned up less. I am interested in using it on my 447 or 503.
OPTIONAL (off-topic):
Years ago I bought a Rototiller at a yard sale. Huge heavy thing,
self-propelled, gear box, built like they usta build. Cast iron, etc. It had
a big single cyl engine under a cowling in front. So, I used the thing a few
times, it ran great, it was quite a machine. After a while I figgered I'd
check the valve lash, change the oil, etc. Tore into it, to my surprise it
was a 2-stroke! Yeah, I know, makes me sound dumb. But it ran so slow and
had such torque. So after a few hours of operation I finally started giving
it oil in the gas. No apparent damage.
Message 6
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Hi Wesley
My MkIII Xtra only has a Jabiru 2200 80HP motor but with one person I routinely
take off in 300 feet and land in 400 or less. I'm sure with a 912 100HP it
would take off in less.
That by most would be good STOL.
When I was getting to know the plane and I tried full flaps and engine at idle
I quite surprised my self at the decent angle to keep 55 MPH, it felt like I was
standing on the rudder pedals and going straight down.. as soon as you get
to 5 feet over the runway level off and the speed goes AWAY. But I soon got
to love that approach, stay at 500Ft on final until just short of the runaway
and then drop in..
With two people its a different aircraft and I fly it faster 60MPH , all the way
to touchdown, so that I can maintain good flare control on landing, but its
still slows down very quickly.
One thing that is interesting is that with the high pusher configuration you can
pull back on the stick , full throttle, and it will stall, but the engine pushes
the nose over and it starts flying again and climbs, stalls, nose pushed
forward, climbs, etc..etc.. That is a great design feature that gives you some
interesting climb out angles, if you dare..
YEP... stol.
Frankd
MkIII Xtra, 1014S
do not archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=427021#427021
Message 7
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John, thanks for the links to your videos. I bet your were off the ground in under
200 feet. Is that a 912 100 hp?
Frank, thanks for sharing your experiences and how you shoot approaches.
--------
Wesley Elliott
Sport Pilot-PPC
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=427031#427031
Message 8
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Subject: | Re: RE: to inject or not to inject... |
Hi guys,=0A=0AMy only Rotax 2-cycle experience is on a 503 with injection.
- My Firestar has over 500 hours on it and the injection system has perfo
rmed faultlessly.- I suspect the injection system is responsible for long
plug life and reduced oil expense.- I have had no problems in cold weath
er.=0A=0AJon L=0AMinnesota=0A=0A=0A=0AOn Sunday, July 20, 2014 9:21 PM, Geo
rge Bearden <gab16@sbcglobal.net> wrote:=0A =0A=0A=0A--> Kolb-List message
posted by: "George Bearden" <gab16@sbcglobal.net>=0A=0AMy only experience w
ith oil injection was years ago on 2-stroke motorcycles.=0AI loved it. I us
ed far less oil, I kept my hands clean when fueling, the=0Aengine carboned
up less. I am interested in using it on my 447 or 503.=0A=0AOPTIONAL (off-t
opic):=0A=0AYears ago I bought a Rototiller at a yard sale. Huge heavy thin
g,=0Aself-propelled, gear box, built like they usta build. Cast iron, etc.
It had=0Aa big single cyl engine under a cowling in front. So, I used the t
hing a few=0Atimes, it ran great, it was quite a machine. After a while I f
iggered I'd=0Acheck the valve lash, change the oil, etc. Tore into it, to m
y surprise it=0Awas a 2-stroke!- Yeah, I know, makes me sound dumb. But i
t ran so slow and=0Ahad such torque. So after a few hours of operation I fi
nally started giving=0Ait oil in the gas. No apparent damage.=0A=0A=0A=0A
==============
Message 9
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The smoke finally cleared enough that I could make a trip to the Alvord. I
had been trying since Friday to get over there, but the smoke from the
fires was just too heavy. It finally cleared today.
https://vimeo.com/101271886
<https://vimeo.com/101271886?utm_source=email&utm_medium=clip-transcode_complete-finished-20120100&utm_campaign=7701&email_id=Y2xpcF90cmFuc2NvZGVkfGQ2ZjBhYTQ2Y2I3ZmVlN2M5MWFjZmNjNDE3Nzk4ZDJjNzkyfDc2NDA2NDl8MTQwNTkyMzgzOXw3NzAx>
-password - owyheeflyer
Larry
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