Today's Message Index:
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1. 01:54 AM - M332CE Revives LOM Fortunes ? (Vaso Bovan)
2. 09:08 AM - Re: M332CE Revives LOM Fortunes ? (Jeayers1@aol.com)
3. 12:39 PM - New SPAM and Virus Filtering Appliance At Matronics... (dralle@matronics.com (Matt Dralle))
Message 1
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| Subject: | M332CE Revives LOM Fortunes ? |
--> Lom-List message posted by: "Vaso Bovan" <vbovan@xtra.co.nz>
Like a lot of builders, I looked carefully at the LOM M332B for my Glastar,
as a competitor to Lycoming 320 and other engines in the 160hp class. In the
end, I decided the M332B was really a 140hp engine, and LOM was just not
responsive to North American prospective customers. Among anachronisms of
the M332 was the generator (as opposed to alternator), a supercharger handle
that was more suited to a Hoyt-Clagwell farm tractor, and - most
disappointing of all - a low compression ratio meant for 3rd world countries
that didn't have 100LL gasoline. 10hp+ was thrown away needlessly by the low
compression ratio.
Well, it seems that the factory has listened - 5yrs too late but better late
than. The recently-introduced M332CE has increased compression ratio -
7.4:1 vs 6.3:1. The rating is 170hp, but at an anti-social 3000rpm, so
perhaps the M332CE should really be called a true 160hp engine.
Does anyone know how and why the M332CE was introduced, and whether the
M332B has been discontinued altogether - or just discontinued from the North
American market ?
I'm interested to hear thoughts about whether this new M332CE engine makes
LOM a real competitor to the Lycoming 320 - or does the M332CE arrive too
late in the game just as other engine alternatives are becoming available,
such as the XP-320. Seems to me the M332B was a perfect engine for tandem
(small cross-section) aircraft, but I'm curious whether there is a direct
performance comparison between the Lycoming 160hp "IO"-320 and the
M332B/(CE) on a wider airframe such as the Glastar.
Message 2
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| Subject: | Re: M332CE Revives LOM Fortunes ? |
--> Lom-List message posted by: Jeayers1@aol.com
Hi All,
2800 RPM is probably a practical limit for propeller RPM. An MT propeller
can be used to 2800 RPM.
According to LOM's performance chart, the LOM M332CE has about 155 hp at 2800
RPM with the supercharger engaged at sea level. So it seems to be fairly
close to the 160 hp output of the Lyc. 320.
I have looked at, and taken some measurements, from the Glastar cowl with a
LOM engine.
I am comparing this information with the cowl on my RV-3 with the LOM engine
and some Email discussions I've had recently with the NemesisNXT cooling
expert on my LOM cooling issues.
Basic observations:
The Glastar cowl inlet is approximately 7 x 10 inch oval with around 60 sq.
in. of inlet area.
The LOM engine inlet has about 52 sq. in of inlet area.
My RV-3 cowl has 25 sq. in of inlet area. I only have a cylinder head
temperature probe on cylinder #3. The cylinder head temperature only goes to the
top of the green arc on an extended climb.
The Glastar cowl exit ends just in front of the firewall.
According to the NemesisNXT expert, the exit air has a vertical velocity as
it leaves the cowl. If this has a high enough vertical velocity, it stalls the
airflow on the bottom of the fuselage.
When the cowl is trimmed for the HR2, the bottom portion below the fuselage
is not trimmed. This forms a tunnel along the bottom of the fuselage to direct
the exit air.
I am going to extend the bottom of the cowl on my RV-3 by about 2 inches to
improve the cowl exit air. This could be done on the Glastar cowl, also.
On my RV-3, using the oil tank as an oil cooler has not been adequate,
especially during the summer. I have added three small air inlets in the front
of
the cowl to provide additional air along the engine case. And I added an air
hose directed at the oil tank from the engine baffle. I can only climb to
around 11,500' before the oil temperature reaches the end of the green arc. (In
cruise, it drops about 10 degrees C.)
It seems to me that the engine and oil cooling for the LOM engine has not
been refined to the same level that has already been done for the Lycoming
installations.
Jim Ayers
Message 3
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| Subject: | New SPAM and Virus Filtering Appliance At Matronics... |
--> Lom-List message posted by: dralle@matronics.com (Matt Dralle)
Dear Listers,
I will be installing a new SPAM and virus blocking appliance this
evening or tomorrow. The installation will involve some changes
in the Matronics DNS MX records, and will impact how incoming
email is handled. While I expect these changes to be transparent
to all of the List subscribers, things might go differently... ;-)
The Lists get bombarded with tons of SPAM messages and viruses
each day and fortunately my custom filters have been extremely
effective at filtering most of this from redistribution. Its
time to move to the next level of technology, however, and this
SPAM and Virus filtering appliance seems like an excellent
solution.
I will post a follow up message later in the week when things
have stabilized and I have some filter statistics to share.
Best regards,
Matt Dralle
Matronics Email List Admin.
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Matt G. Dralle | Matronics | P.O. Box 347 | Livermore | CA | 94551
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