Today's Message Index:
----------------------
1. 04:46 AM - RotaxEngines-List Digest (Tom463@aol.com)
2. 07:03 AM - Re: RotaxEngines-List Digest (Jack Kuehn)
3. 07:32 AM - Re: RotaxEngines-List Digest (paul wilson)
4. 11:10 AM - Re: RotaxEngines-List Digest (Noel Loveys)
5. 03:30 PM - Re: Low Oil Pressure....High Oil Pressure (Tommy Walker)
6. 04:05 PM - Re: Re: Low Oil Pressure....High Oil Pressure (Ken Arnold)
7. 06:55 PM - Re: Re: Low Oil Pressure....High Oil Pressure (paul wilson)
8. 09:42 PM - Re: Low Oil Pressure....High Oil Pressure (Roger Lee)
9. 09:49 PM - Re: Warpdrive =?ISO-8859-1?Q?damage=C3=A2=82=AC=C2?=. (Roger Lee)
Message 1
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| Subject: | RotaxEngines-List Digest |
The auto gas in Central Florida now has about 8% Ethnaol in it and has
become a major topic of conversation during hangar flying sessions. An
experienced A&P recommends blending 100LL at a 50% ratio with the 93 Octane for
Rotax
912ULS engines. I'm wondering if this would be a good diet for my new 912S,
which has yet to come out of the box.
Tom
Aventura II
N569AT
**************It's only a deal if it's where you want to go. Find your travel
deal here.
(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047)
Message 2
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| Subject: | Re: RotaxEngines-List Digest |
Recently my gas station, like many I hear, stopped selling ethanol-free
gasoline. Bummer. I notice the 5% drop in power. But, Rotax is clear
about the increased maintenance you must perform if you use 100LL. Sunday I
flew to 8000 feet in 95 degree F temperatures, parked the plane on a hot
ramp, then started up and flew home again with no problems. I'm going to
stick with autogas and synthetic oil.
Jack
On Tue, Aug 26, 2008 at 5:45 AM, <Tom463@aol.com> wrote:
> The auto gas in Central Florida now has about 8% Ethnaol in it and has
> become a major topic of conversation during hangar flying sessions. An
> experienced A&P recommends blending 100LL at a 50% ratio with the 93 Octane
> for Rotax 912ULS engines. I'm wondering if this would be a good diet for my
> new 912S, which has yet to come out of the box.
>
> Tom
> Aventura II
> N569AT
>
>
> ------------------------------
> It's only a deal if it's where *you* want to go. Find your travel deal *
> here* <http://information.travel.aol.com/deals?ncid=aoltrv00050000000047>.
>
> *
>
>
--
Jack Kuehn
5565 Brady Ln
Lolo, MT USA 59847
(406)273-6801
(406)546-1086 cell
jack.kuehn@gmail.com
(406)273-2563 fax
http://mountaintime.myrf.net/imglib/index.htm
Message 3
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| Subject: | Re: RotaxEngines-List Digest |
Jack,
5% is a very big change. Maybe something is going on that needs
investigation. Adding alky should increase the octane, power, and
slightly reduce the density (mpg).
Most studies indicate higher power and lower MPG with the alky
contaminated unleaded. These studies were for engines designed for
non-contaminated unleaded.
I agree unleaded and syn oil is the choice way to go.
Paul
=================
At 08:03 AM 8/26/2008, you wrote:
>Recently my gas station, like many I hear, stopped selling
>ethanol-free gasoline. Bummer. I notice the 5% drop in
>power. But, Rotax is clear about the increased maintenance you must
>perform if you use 100LL. Sunday I flew to 8000 feet in 95 degree F
>temperatures, parked the plane on a hot ramp, then started up and
>flew home again with no problems. I'm going to stick with autogas
>and synthetic oil.
>
>Jack
>
>On Tue, Aug 26, 2008 at 5:45 AM,
><<mailto:Tom463@aol.com>Tom463@aol.com> wrote:
>The auto gas in Central Florida now has about 8% Ethnaol in it and
>has become a major topic of conversation during hangar flying
>sessions. An experienced A&P recommends blending 100LL at a 50%
>ratio with the 93 Octane for Rotax 912ULS engines. I'm wondering if
>this would be a good diet for my new 912S, which has yet to come out
>of the box.
>
>Tom
>Aventura II
>N569AT
>
>
>----------
>It's only a deal if it's where you want to go. Find your travel deal
><http://information.travel.aol.com/deals?ncid=aoltrv00050000000047>here.
>
>
>--
>Jack Kuehn
>5565 Brady Ln
>Lolo, MT USA 59847
>
>(406)273-6801
>(406)546-1086 cell
><mailto:jack.kuehn@gmail.com>jack.kuehn@gmail.com
>(406)273-2563 fax
><http://mountaintime.myrf.net/imglib/index.htm>http://mountaintime.myrf.net/imglib/index.htm
>
>
><http://www.matronics.com/Navigator?RotaxEngines-List>http://www.matronics.com/Navigator?RotaxEngines-List
><http://www.matronics.com/contribution>http://www.matronics.com/contribution
>
Message 4
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| Subject: | RotaxEngines-List Digest |
As much as I think ethanol has no place in aviation, outside business class
it really doesn't, the fact is that some of us will have to make the same
decision you have made. Put in your shoes, Thank god I'm not, I'm sure I'd
make the same decision. Just continue to do your drip tests on your tanks.
If you see anything in the gas that doesn't look right find out what it is
before flying. Another thing I wouldn't do is leave gas in the wing tanks
for weeks on end.. If you only fly occasionally then for the twenty minutes
it takes to defuel the plane, it would be worth it to save the possibility
of degrading your tanks and fuel delivery system. Shut off the gas and burn
the gas out of the carb bowls.
Noel
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of paul
wilson
Sent: Tuesday, August 26, 2008 12:01 PM
Subject: Re: RotaxEngines-List: RotaxEngines-List Digest
Jack,
5% is a very big change. Maybe something is going on that needs
investigation. Adding alky should increase the octane, power, and slightly
reduce the density (mpg).
Most studies indicate higher power and lower MPG with the alky contaminated
unleaded. These studies were for engines designed for non-contaminated
unleaded.
I agree unleaded and syn oil is the choice way to go.
Paul
=================
At 08:03 AM 8/26/2008, you wrote:
Recently my gas station, like many I hear, stopped selling ethanol-free
gasoline. Bummer. I notice the 5% drop in power. But, Rotax is clear
about the increased maintenance you must perform if you use 100LL. Sunday I
flew to 8000 feet in 95 degree F temperatures, parked the plane on a hot
ramp, then started up and flew home again with no problems. I'm going to
stick with autogas and synthetic oil.
Jack
On Tue, Aug 26, 2008 at 5:45 AM, <Tom463@aol.com> wrote:
The auto gas in Central Florida now has about 8% Ethnaol in it and has
become a major topic of conversation during hangar flying sessions. An
experienced A&P recommends blending 100LL at a 50% ratio with the 93 Octane
for Rotax 912ULS engines. I'm wondering if this would be a good diet for my
new 912S, which has yet to come out of the box.
Tom
Aventura II
N569AT
_____
It's only a deal if it's where you want to go. Find your travel deal here
<http://information.travel.aol.com/deals?ncid=aoltrv00050000000047> .
--
Jack Kuehn
5565 Brady Ln
Lolo, MT USA 59847
(406)273-6801
(406)546-1086 cell
jack.kuehn@gmail.com
(406)273-2563 fax
http://mountaintime.myrf.net/imglib/index.htm
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Message 5
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| Subject: | Re: Low Oil Pressure....High Oil Pressure |
Regarding my oil pressure issue. I'm in the middle of the first annual here's
what I've done to date:
With the Rotax Pressure Sender and a VDO gauge,
Oil Pressure at start up was 55 PSI
Cruise pressure was 30-35 PSI
1. I replaced the pressure sender with one from another 912 I have. No Joy.
2. I swapped the VDO gauge. Still No Joy.
3. I replaced the wire from the sending unit to the VDO gauge. Need I say?
4. Today I removed the sending unit and temporarily hooked up a mechanical pressure
gauge. Upon start up the oil pressure went to 67-68 PSI. I let the engine
run for a couple of minutes at 1800 RPM and then pushed the throttle in to
about 3000 RPM. The oil pressure stayed above 60 PSI.
So, I am thinking that either there is an incompatibility with my sending unit
and gauge, or the problem lies elsewhere. I suppose the mechanical gauge could
be wrong, but really? I doubt it. It's sort of like changing parts till you
get the answer you want, isn't it.... :)
So, have any of you switched to a mechanical gauge for your 912? I would prefer
an electric gauge because of the problems with running a tube into the cockpit.
I would think that a weak point would be the flared fitting at the connection
to the block.
I am open to any suggestions.
I appreciate your thoughts.
Tommy Walker in Alabama
Do Archive
[quote="Tommy Walker"]Thanks folks, I got a mechanical gauge and all the plumbing.
Im going to hook it up this week and compare pressure readings.
Thanks again,
Tommy Walker in Alabama
N8701
Do Not Archive
> [b]
--------
Tommy Walker
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 0765#200765
Message 6
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| Subject: | Re: Low Oil Pressure....High Oil Pressure |
Tommy,
I had similar readings with my 912ULS. Per Lockwood, oil pressure
indicating higher when reducing rpm from 3500 to 2000 is normal. Has to do
with hydraulics. i.e. oil flow in Rotax increases at lower rpm. Therefore,
pressure indication will indicate higher at lower rpm.
I ended up with Mitchell 80# sender and Mitchell 80# gauge. My readings
are:
50# at 3500 rpm
60# at 2000 rpm
Regards,
Ken
Flying CH701 N701LK
do not archive
----- Original Message -----
From: "Tommy Walker" <twalker@cableone.net>
Sent: Tuesday, August 26, 2008 6:29 PM
Subject: RotaxEngines-List: Re: Low Oil Pressure....High Oil Pressure
> <twalker@cableone.net>
>
> Regarding my oil pressure issue. I'm in the middle of the first annual
> here's what I've done to date:
>
> With the Rotax Pressure Sender and a VDO gauge,
> Oil Pressure at start up was 55 PSI
> Cruise pressure was 30-35 PSI
>
> 1. I replaced the pressure sender with one from another 912 I have. No
> Joy.
>
> 2. I swapped the VDO gauge. Still No Joy.
>
> 3. I replaced the wire from the sending unit to the VDO gauge. Need I
> say?
>
> 4. Today I removed the sending unit and temporarily hooked up a
> mechanical pressure gauge. Upon start up the oil pressure went to 67-68
> PSI. I let the engine run for a couple of minutes at 1800 RPM and then
> pushed the throttle in to about 3000 RPM. The oil pressure stayed above
> 60 PSI.
>
> So, I am thinking that either there is an incompatibility with my sending
> unit and gauge, or the problem lies elsewhere. I suppose the mechanical
> gauge could be wrong, but really? I doubt it. It's sort of like changing
> parts till you get the answer you want, isn't it.... :)
>
> So, have any of you switched to a mechanical gauge for your 912? I would
> prefer an electric gauge because of the problems with running a tube into
> the cockpit. I would think that a weak point would be the flared fitting
> at the connection to the block.
>
> I am open to any suggestions.
>
> I appreciate your thoughts.
>
> Tommy Walker in Alabama
> Do Archive
>
> [quote="Tommy Walker"]Thanks folks, I got a mechanical gauge and all the
> plumbing. I?Tm going to hook it up this week and compare pressure
> readings.
>
> Thanks again,
>
> Tommy Walker in Alabama
> N8701
> Do Not Archive
>
>> [b]
>
>
> --------
> Tommy Walker
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 0765#200765
>
>
>
Message 7
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| Subject: | Re: Low Oil Pressure....High Oil Pressure |
Tommy,
Perform this test and tell us the result:
Run a ground wire in place of what ever you now
have directly from the sender to the gauge. Do
not break the wire at the firewall - go around
the firewall and thru the door. Then fly the plane. Then we can go from there.
Tip: you might have to use an alligator clip at
the sender to make sure you are really making a connection there.
Paul
=================
At 04:29 PM 8/26/2008, you wrote:
>
>Regarding my oil pressure issue. I'm in the
>middle of the first annual here's what I've done to date:
>
>With the Rotax Pressure Sender and a VDO gauge,
>Oil Pressure at start up was 55 PSI
>Cruise pressure was 30-35 PSI
>
>1. I replaced the pressure sender with one from another 912 I have. No Joy.
>
>2. I swapped the VDO gauge. Still No Joy.
>
>3. I replaced the wire from the sending unit to the VDO gauge. Need I say?
>
>4. Today I removed the sending unit and
>temporarily hooked up a mechanical pressure
>gauge. Upon start up the oil pressure went to
>67-68 PSI. I let the engine run for a couple of
>minutes at 1800 RPM and then pushed the throttle
>in to about 3000 RPM. The oil pressure stayed above 60 PSI.
>
>So, I am thinking that either there is an
>incompatibility with my sending unit and gauge,
>or the problem lies elsewhere. I suppose the
>mechanical gauge could be wrong, but really? I
>doubt it. It's sort of like changing parts till
>you get the answer you want, isn't it.... :)
>
>So, have any of you switched to a mechanical
>gauge for your 912? I would prefer an electric
>gauge because of the problems with running a
>tube into the cockpit. I would think that a
>weak point would be the flared fitting at the connection to the block.
>
>I am open to any suggestions.
>
>I appreciate your thoughts.
>
>Tommy Walker in Alabama
>Do Archive
>
>[quote="Tommy Walker"]Thanks folks, I got a
>mechanical gauge and all the plumbing. Im
>going to hook it up this week and compare pressure readings.
>
>Thanks again,
>
>Tommy Walker in Alabama
>N8701
>Do Not Archive
>
> > [b]
>
>
>--------
>Tommy Walker
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p 0765#200765
>
>
Message 8
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| Subject: | Re: Low Oil Pressure....High Oil Pressure |
Tommy,
try taking an alligator clip and wire and hooking up one to the ground on the gauge
and hooking up to some other ground other than the one you are using now
for the gauge. This will only take a few minutes. Let me know what happens. Oh,
I forgot run the engine after this new ground is hooked up. I had the same issue
a few months back and played with it for 2 hours. My meter said I had a good
ground, but it ended up being a partial ground.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 0846#200846
Message 9
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| Subject: | Re: Warpdrive =?ISO-8859-1?Q?damage=C3=A2=82=AC=C2?=. |
When you do these repairs remember that now the prop balance is out. It needs to
be rebalanced. Just buy the bubble balancer from Aircraft Spruce. Its cheap
and the balance is easy. Don't beat up your gearbox and everything else. Like
the old saying "Pay a little now or a lot later".
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 0847#200847
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