Today's Message Index:
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1. 03:47 AM - Re: 912 with low RPM (Rich L)
2. 05:51 AM - Re: Re: RotaxEngines-List Digest (Noel Loveys)
3. 06:07 AM - Re: Re: RotaxEngines-List Digest: 0 Msgs - 03/04/08 (Noel Loveys)
4. 07:42 PM - Re: Re: Re: RotaxEngines-List Digest: 0 Msgs - 03/04/08 (Guy Buchanan)
Message 1
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| Subject: | Re: 912 with low RPM |
I want to thank Roger for the informative note on the 912ULS RPM. It is framed
and hanging on my hanger wall for all the visiting "experts".
Rich L
North Idaho
Back-Country Kitfox 7
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=167977#167977
Message 2
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| Subject: | Re: RotaxEngines-List Digest |
Ivan:
Most of what you have said about pre-mixing VS injection is accurate....
but there is another factor that you haven=99t considered. That
is the effect of ethanol in the gas.
If you are unlucky enough to live in a place there the gas has been
contaminated with 10% Ethanol or more, and you premix..you can get a
phenomenon called phase separation. Actually as the temperature drops
any gas contaminated with Ethanol can undergo phase separation. When
the gas is pre mixed it get especially bad because the oil is dragged
out of the gas into the separation with any water, from humidity in the
air, and will sink like a rock to the bottom of your fuel. This milky
looking, gooey, mess will a. Stop your engine and b. Be a real nice mess
to have to clean up once you get back on the ground.
Not all is bad with pre-mixing. A bit of oil in your fuel will protect
your tanks from ethanol damage. Apparently Ethanol likes to attack oil
more than fibre glass fillers. This is especially valuable if you have
epoxy fibreglass tanks.
This is one of those items where there is no right answer... Short of
only using ethanol for drinking or cleaning... You can only do what
you think is right.
Noel
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Ivan
Sent: Wednesday, March 05, 2008 5:29 PM
Subject: Re: RotaxEngines-List: Re: RotaxEngines-List Digest: 0 Msgs -
03/04/08
Mark
I have had a 582 with no problems. I still prefered to mix my oil. I
have heard from more knowledgeable people that the oil injection is just
one more thing to go wrong and fail unlike mixing the oil NEVER fails.
I would certainly trust mixing oil if I was on a xc. Did a cross
country of 300+ miles once and just brought some oil with me. Either
figured out how much was in the gas tank and added the appropriate
amount of oil or had a 5 gal jug along to mix. I have also "heard" that
one has less control with oil injection because it doesnt adapt well
when t he RPM changes. I fly trikes by the way and never thought of
oil mixing as a pain. It was just my extra margin of safety.
Ivan
Phoenix, AZ
----- Original Message -----
From: knowvne@aol.com
Sent: Wednesday, March 05, 2008 8:49 AM
Subject: RotaxEngines-List: Re: RotaxEngines-List Digest: 0 Msgs -
03/04/08
Rotax 503 Questions.. to all you 503 experts 8-)
I'm looking at the 503 for it's reliability record...
I'm considering Oil Injection to avoid pre mix issues when flying XC...
I'm also considering installing a clutch for the Prop...
What are the pros and cons of oil Injection vs premix and with &
without a clutch???
What's the best configuration???? What advantages does one set up have
over the other and why??
I'm looking to get my cake and eat it here ??? 8-)
Thanks
Mark
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Message 3
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| Subject: | Re: RotaxEngines-List Digest: 0 Msgs - 03/04/08 |
Do you put the oil in first and add the gas or the other way around.... Gas
and oil are supposed to be thoroughly mixed before being used. To do that
you really should either buy your gas pre mixed (marina) or mix it in a
separate tank before putting it in your plane.
BTW the recommended procedure is to put the oil in a mixing container first
then add the gas.
Just out of curiosity has any one actually seen an injection pump break??
I've seen oil filter blocked, regular checks weren't done. I've seen pumps
air locked they weren't properly bled when installed.... Those engines were
all inverted (plugs down).
I live in a small town where, I'm just about the only one in town who
doesn't have an oil injected snowmobile. I sold mine a few years back to go
flying. Not one of the locals mix their gas.. And surprisingly, to me,
none have had any problems with their injection systems. They use their
sno-mo(s) under excruciating circumstances hauling loads of wood for next
winter, racing and visiting their "camps" up in the woods. Thier
maintenance on the oil filters is minimal. I've seen just about every other
part either be demolished or worn out but the injector pumps never seem to
quit.
Noel
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of
ElleryWeld@aol.com
Sent: Wednesday, March 05, 2008 5:42 PM
Subject: Re: RotaxEngines-List: Re: RotaxEngines-List Digest: 0 Msgs -
03/04/08
I prefer to mix my gas as well when I was running a 2 stroke that's just
another thing to worry about failing and it was never a problem carrying
extra oil buy a oil measuring cup from wicks aircraft I think it was and
when you fill up at an airport know how much you pumped in and use your
measuring cup to get the exact amount of oil then when the engine is
running you know its getting the lubrication it needs
Ellery Test flying KITFOX & XAir and working on my Mk3Xtra
do not archive
In a message dated 3/5/2008 4:02:40 P.M. Eastern Standard Time,
imap8ntr@cox.net writes:
Mark
I have had a 582 with no problems. I still prefered to mix my oil. I have
heard from more knowledgeable people that the oil injection is just one more
thing to go wrong and fail unlike mixing the oil NEVER fails. I would
certainly trust mixing oil if I was on a xc. Did a cross country of 300+
miles once and just brought some oil with me. Either figured out how much
was in the gas tank and added the appropriate amount of oil or had a 5 gal
jug along to mix. I have also "heard" that one has less control with oil
injection because it doesnt adapt well when t he RPM changes. I fly trikes
by the way and never thought of oil mixing as a pain. It was just my extra
margin of safety.
Ivan
Phoenix, AZ
----- Original Message -----
From: knowvne@aol.com
Sent: Wednesday, March 05, 2008 8:49 AM
Subject: RotaxEngines-List: Re: RotaxEngines-List Digest: 0 Msgs - 03/04/08
Rotax 503 Questions.. to all you 503 experts 8-)
I'm looking at the 503 for it's reliability record...
I'm considering Oil Injection to avoid pre mix issues when flying XC...
I'm also considering installing a clutch for the Prop...
What are the pros and cons of oil Injection vs premix and with & without a
clutch???
What's the best configuration???? What advantages does one set up have over
the other and why??
I'm looking to get my cake and eat it here ??? 8-)
Thanks
Mark
_____
Supercharge your AIM. Get the AIM
<http://download.aim.com/client/aimtoolbar?NCID=aolcmp00300000002586>
toolbar for your browser.
href="http://www.matronics.com/Navigator?RotaxEngines-List">http://www.matro
nics.com/Navigator?RotaxEngines-List
href="http://forums.matronics.com">http://forums.matronics.com
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st
href="http://www.matronics.com/Navigator?RotaxEngines-List">http://www.matro
nics.com/Navigator?RotaxEngines-List
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://www.matronics.com/contribution">http://www.matronics.com/contribution
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Message 4
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| Subject: | Re: RotaxEngines-List Digest: 0 Msgs - 03/04/08 |
At 06:04 AM 3/6/2008, you wrote:
>Thier maintenance on the oil filters is minimal. I've seen just
>about every other part either be demolished or worn out but the
>injector pumps never seem to quit.
Riding motorcycles we never had injection pumps quit.
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
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