---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Fri 07/20/07: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:56 AM - Re: RotaxEngines-List Digest: 6 Msgs - 07/19/07 (Hugh McKay III) 2. 04:20 PM - Re: 912 starting problems (jetboy) ________________________________ Message 1 _____________________________________ Time: 05:56:20 AM PST US From: "Hugh McKay III" Subject: RotaxEngines-List: RE: RotaxEngines-List Digest: 6 Msgs - 07/19/07 Don: I would first look carefully on the gearbox itself to see if you can find an identifying number. If so, right that number down. Then get the engine S/N off the engine and call Lockwood Aviation Tech Service (1-800-527-6829) between 9:00 am and 10:00 am, or between 2:00 pm and 3:00 pm and ask to speak to Dean Vogel or some one else in tech service. They should be able to help you. Hugh -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of RotaxEngines-List Digest Server Sent: Friday, July 20, 2007 2:57 AM Subject: RotaxEngines-List Digest: 6 Msgs - 07/19/07 * ================================================= Online Versions of Today's List Digest Archive ================================================= Today's complete RotaxEngines-List Digest can also be found in either of the two Web Links listed below. The .html file includes the Digest formatted in HTML for viewing with a web browser and features Hyperlinked Indexes and Message Navigation. The .txt file includes the plain ASCII version of the RotaxEngines-List Digest and can be viewed with a generic text editor such as Notepad or with a web browser. HTML Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Cha pter 07-07-19&Archive=RotaxEngines Text Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chap ter 07-07-19&Archive=RotaxEngines =============================================== EMail Version of Today's List Digest Archive =============================================== ---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Thu 07/19/07: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:33 PM - ratio Ident>? (Don G) 2. 02:23 PM - Re: ratio Ident>? (Hugh McKay III) 3. 03:06 PM - Re: ratio Ident>? (Don G) 4. 06:14 PM - Re: ratio Ident>? (Roger Lee) 5. 07:17 PM - Re: Re: ratio Ident>? (Hugh McKay III) 6. 07:45 PM - Re: ratio Ident>? (Don G) ________________________________ Message 1 _____________________________________ Time: 01:33:29 PM PST US Subject: RotaxEngines-List: ratio Ident>? From: "Don G" gents, How can I identify the ratio of my 912 UL?....and numbers that give a clue anywhere? Thx -------- Don G. Central Illinois Kitfox IV Speedster Luscombe 8A http://www.geocities.com/dagger369th/my_firefly.htm Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124828#124828 ________________________________ Message 2 _____________________________________ Time: 02:23:08 PM PST US From: "Hugh McKay III" Subject: RE: RotaxEngines-List: ratio Ident>? Don: If you have a 912 UL, A, or F, the compression ratio is 9.0:1. On a 912 ULS, or S it is 10.5:1. This is stated in the Rotax Engine Operators Manual. Call your Rotax Dealer and give them the S/N of your engine which is located on top of the right side of the engine (when facing the propeller), near the magneto end to confirm it. Hugh McKay 912 UL -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Don G Sent: Thursday, July 19, 2007 4:33 PM Subject: RotaxEngines-List: ratio Ident>? gents, How can I identify the ratio of my 912 UL?....and numbers that give a clue anywhere? Thx -------- Don G. Central Illinois Kitfox IV Speedster Luscombe 8A http://www.geocities.com/dagger369th/my_firefly.htm Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124828#124828 ________________________________ Message 3 _____________________________________ Time: 03:06:48 PM PST US Subject: RotaxEngines-List: Re: ratio Ident>? From: "Don G" Hugh, Oops...I shoulda been more specific..The gearbox ratio Is what I am looking for! -------- Don G. Central Illinois Kitfox IV Speedster Luscombe 8A http://www.geocities.com/dagger369th/my_firefly.htm Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124851#124851 ________________________________ Message 4 _____________________________________ Time: 06:14:56 PM PST US Subject: RotaxEngines-List: Re: ratio Ident>? From: "Roger Lee" Hi Don, If it's the 912uls, 100 hp then the gear box ratio is most likely 2.43:1 -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124874#124874 ________________________________ Message 5 _____________________________________ Time: 07:17:16 PM PST US From: "Hugh McKay III" Subject: RE: RotaxEngines-List: Re: ratio Ident>? Don: The G.B. ration for the 912 UL, A, and F is normally 2.27:1. However, there is an optional ratio that can be ordered of 2.43:1. Hugh McKay -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Roger Lee Sent: Thursday, July 19, 2007 9:14 PM Subject: RotaxEngines-List: Re: ratio Ident>? Hi Don, If it's the 912uls, 100 hp then the gear box ratio is most likely 2.43:1 -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124874#124874 ________________________________ Message 6 _____________________________________ Time: 07:45:26 PM PST US Subject: RotaxEngines-List: Re: ratio Ident>? From: "Don G" Is there any way to identify which externally>? do the stamp em or anything? Surely I wont have to pull a rocker cover and turn the prop counting the turns and try to figger it out that way!........will I?? -------- Don G. Central Illinois Kitfox IV Speedster Luscombe 8A http://www.geocities.com/dagger369th/my_firefly.htm Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124888#124888 ________________________________ Message 2 _____________________________________ Time: 04:20:37 PM PST US Subject: RotaxEngines-List: Re: 912 starting problems From: "jetboy" A friend has an Avid with the 80 hp 912 and that has suffered 4 causes and cures for the starting troubles. 1/ one or other carbs fall off during start. Cured by attaching carbs to bracket also replacing soft engine mounts. there are 4 SB relating to mounting the carbs. 2/ would misfire and stop when cranking. Cured by changing ignition switches to toggle type so that both carb float bowls could be primed by cranking engine a few seconds before attempting to start. 3/ would fire during cranking but not pick up revs. Started and ran perfectly when propellor removed! Preload was at lower limit. Cured by overhaul and change of the 15 deg dog clutch with the newer 30 deg one in gearbox. 4/ would throw out starter engagement during cranking. Cured by overhaul of sprag clutch on starter motor. there uis a SB for the 912S for this problem. We diagnosed it on the 912UL by carrying out the tests as for the 912S, and the starter current was 10 amps lower than that limit. You probably dont have the first problem, but any combination of the others could occur. total time is less than 160 hrs. Ralph -------- Ralph - CH701 / 2200a Read this topic online here: http://forums.matronics.com/viewtopic.php?p=125027#125027 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.