Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Sun, 28 Mar 2004 09:51:14 -0500 Message-ID: X-Original-Return-Path: Received: from m03.lax.untd.com ([64.136.30.66] verified) by logan.com (CommuniGate Pro SMTP 4.2b1) with SMTP id 3130996 for lml@lancaironline.net; Sun, 28 Mar 2004 09:27:54 -0500 Received: from cookie.untd.com by cookie.untd.com for <"7LRIubhLn1VLcKB8GrXnbRmJuVgqJzsh20psuR12RKyJhU79vePYynvW/Xzb++K2">; Sun, 28 Mar 2004 06:26:56 PST Received: (from earl_schroeder@juno.com) by m03.lax.untd.com (jqueuemail) id JRTLWR2G; Sun, 28 Mar 2004 06:26:56 PST X-Original-To: lml@lancaironline.net X-Original-Date: Sun, 28 Mar 2004 08:26:14 -0600 Subject: Re: [LML] MT Electric Prop X-Original-Message-ID: <20040328.082614.2944.3.Earl_Schroeder@juno.com> X-Mailer: Juno 5.0.33 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary=--__JNP_000_06a2.3efd.3614 X-Juno-Line-Breaks: 7-6,7,14-15,18-19,24-25,27-35,41-45,46-32767 From: earl_schroeder@juno.com This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ----__JNP_000_06a2.3efd.3614 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Hi Pete, I made the switch you described..my Aymar-Demuth prop was stamped 68-78 but apparently it was cut down to 62" since that was its actual measurement. I did have a suitable crank so I went with the MT hydraulic version (3 blade) which was lighter than the electric. Since my A-D prop could be turned 2900 (maybe more but I would pull it back) any numbers for comparison are meaningless. The max RPM on the MT is 2650. I could adjust the stop but have not. In my case, I was more interested in slowing the aircraft for landing on my 2300 ft sod strip than the max speed. The 'air brake' out front now allows much more margin creating a safer situation. The good news (at least in my installation) was no mods were required to install the MT. I just unbolted the A-D and installed the MT. Their nose cone fit perfectly. My governor is installed in front (near the prop) which as supplied by MT is a very small and light unit. No changes were required to remain in the allowed W & B. With the new style nose strut pumped up properly, I believe I could have used a 63" diameter but it would be marginal. Earl E Schroeder Cessna N3595J Lancair N233EE 5436 St Phillips Rd S Evansville, IN 47712 812 985-3372 On Sat, 27 Mar 2004 20:44:17 -0500 CavittP@aol.com writes: Anyone have some actual data as to the performance increases realized by switching from fixed-pitch to a constant-speed? I have a L-235/320 with 62X76 Aymar-Demuth fixed-pitch and am considering the MT electric constant-speed. Max diameter I can have is 62" and must be electrically controlled due to the type of crankshaft on my engine. Would appreciate some numbers if available. Thanks! Pete Cavitt - N320PL 619-701-0784 ----__JNP_000_06a2.3efd.3614 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: quoted-printable

Hi Pete,

I made the switch you described..my Aymar-Demuth prop was stamped 68-= 78 but=20 apparently it was cut down to 62" since that was its actual measurement.&= nbsp; I=20 did have a suitable crank so I went with the MT hydraulic version (3 blade)= =20 which was lighter than the electric. Since my A-D prop could be= =20 turned 2900 (maybe more but I would pull it back) any numbers for = comparison are=20 meaningless. The max RPM on the MT is 2650. I could adjust the = stop=20 but have not.

In my case, I was more interested in slowing the aircraft for landing = on my=20 2300 ft sod strip than the max speed. The 'air brake' out front now = allows=20 much more margin creating a safer situation.

The good news (at least in my installation) was no mods were required = to=20 install the MT. I just unbolted the A-D and installed the MT. = Their=20 nose cone fit perfectly. My governor is installed in front (near the = prop)=20 which as supplied by MT is a very small and light unit. No changes = were=20 required to remain in the allowed W & B.

With the new style nose strut pumped up properly, I believe I could = have=20 used a 63" diameter but it would be marginal.

Earl E Schroeder Cessna N3595J Lancair N233EE
5436 St Phillips = Rd=20 S
Evansville, IN 47712
812 985-3372

On Sat, 27 Mar 2004 20:44:17 -0500 CavittP@aol.com writes:

Anyone have some actual data as to the performance increases=20 realized by switching from fixed-pitch to a constant-speed? I = have=20 a L-235/320 with 62X76 Aymar-Demuth fixed-pitch and am considering the MT= =20 electric constant-speed. Max diameter I can have is 62" and must be= =20 electrically controlled due to the type of crankshaft on my engine. = =20 Would appreciate some numbers if available.

Thanks!

Pete Cavitt - N320PL

619-701-0784

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