---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Fri 08/31/07: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:33 AM - Re: 912 clutch friction torque (Thom Riddle) 2. 04:46 AM - Re: Hello out There? (Thom Riddle) 3. 05:41 AM - Installing a 912 (Noel Loveys) 4. 06:18 AM - Re: Electical System 912S (Hugh McKay III) 5. 12:48 PM - Re: Electical System 912S (Roger Lee) 6. 03:12 PM - Electrical system 912S (Roger Roy) 7. 03:15 PM - Re: Hello out There? (Roger Lee) 8. 03:33 PM - Re: Electrical system 912S (Roger Lee) 9. 04:40 PM - Re: Installing a 912 (Hugh McKay III) ________________________________ Message 1 _____________________________________ Time: 04:33:08 AM PST US Subject: RotaxEngines-List: Re: 912 clutch friction torque From: "Thom Riddle" Bill S. The pre-loading in the gearbox is set by the use of shims under the spring washers on the prop shaft. It requires a hydraulic press and a special tool to compress the spring washers to remove the semi-circular retainer rings. The shims required is a function of the space between the bottom of the retainer slot and the top of the big gear when it is compressed at a specified force, 3600 lb, if memory serves. To see and understand this better, check out the photos in the Rotax 2-stroke maintenance manual. I've not seen a photo of this procedure on the 912 gearbox, though I watched it in Lockwood class. The force spec. may be different between the 2-strokes and the 912 series but the method and procedure is similar. -------- Thom in Buffalo N197BG FS1/447 -------------------- "Blind respect for authority is the greatest enemy of truth." Albert Einstein Read this topic online here: http://forums.matronics.com/viewtopic.php?p=131984#131984 ________________________________ Message 2 _____________________________________ Time: 04:46:42 AM PST US Subject: RotaxEngines-List: Re: Hello out There? From: "Thom Riddle" Roger, Your advice not to fly until he figures out the charging problem may be misleading. For systems that require external electrical power, like radios etc. or engine starting, this makes sense. However, as you probably know, the magnetos in the 912 series engines, once the engine is running, are self-sustaining with no need for external excitation. The engine will continue to run until the mags are grounded or it runs out of fuel. -------- Thom in Buffalo N221FA Allegro 2000 912UL N197BG FS1/447 -------------------- "Blind respect for authority is the greatest enemy of truth." Albert Einstein Read this topic online here: http://forums.matronics.com/viewtopic.php?p=131987#131987 ________________________________ Message 3 _____________________________________ Time: 05:41:43 AM PST US From: "Noel Loveys" Subject: RotaxEngines-List: Installing a 912 Thanks Hugh: You can either send them through the list or directly to noelloveys@yahoo.ca if you think they arte a bit too big to send through the list. I have been going through the installation manual but as they say a picture is worth a thousand words. Noel > Time: 10:48:03 AM PST US > From: "Hugh McKay III" > Subject: RE: RotaxEngines-List: Installing a 912 > > > Noel: > > I have a few pictures of installing a 912 on my Allegro 2000. > I will be glad > to copy them to you if you want to see them. Let me know. > > Hugh McKay > Allegro 2000 > 912 UL ________________________________ Message 4 _____________________________________ Time: 06:18:19 AM PST US From: "Hugh McKay III" Subject: RE: RotaxEngines-List:Electical System 912S Roger: Install the 22000mfd capacitor. This is to reduce the emf noise caused by the rotating engine that is putting out electrical energy to charge the battery. Your Comm will pick it up as rf energy. Hugh McKay Allegro 2000 912 UL -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Roger Roy Sent: Thursday, August 30, 2007 10:32 PM Subject: Re: RotaxEngines-List:Electical System 912S I've a 912S on a Savannah aircraft with a Microair 760 comm. Comm works static free 5X5 with engine not running. With engine at idle I'd rate it as 2X5 as RPM is increased so does the radio static. The radio has a profesional made harness by a reputable shop. Looking at the electrical diagram in the Installation manual I notice a capacitor with a value of 22000mfd 25volts can anyone tell me if that's a required component or is it an option this part is not installed on my electrical system, Can antone advise, thaks Regards, RJ Roy ----- Original Message ----- From: Roger Lee Sent: Thursday, August 30, 2007 10:04 PM Subject: RotaxEngines-List: Re: Hello out There? > Hi Malcolm, Don't fly it until you have this figured out. You may lose an engine in flight. It has to be your charging unit out put or the reg/rectifier. My bet it is your reg/rectifier. They go out more often than most charging system parts. It is easy to replace, too. First look carefully at the wires going into the reg/rectifier and see if they look burnt or very dark in color. You can take a volt meter and put this on the terminals to the battery and see what the voltage to the battery is, like you said it should be about 13.8V to 14.2V is normal. This may vary a little, but should be close. See the attachment -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=131952#131952 Attachments: http://forums.matronics.com//files/generator_and_low_voltage_159.pdfnbsp; Features Subscriptions title=http://www.matronics.com/Navigator?RotaxEngines-List href="http://www.matronics.com/Navigator?RotaxEngines-List">http://www.p; available via title=http://forums.matronics.com/ href="http://forums.matronics.com">http://forums.matronics.com ________________________________ Message 5 _____________________________________ Time: 12:48:53 PM PST US Subject: Re: RotaxEngines-List:Electical System 912S From: "Roger Lee" Hi Roy, I agree with Hugh, put the capacitor in. MY Kolb had it as do many other planes and it should take care of the static. It will also help protect your electrical system. -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=132105#132105 ________________________________ Message 6 _____________________________________ Time: 03:12:02 PM PST US From: "Roger Roy" Subject: RotaxEngines-List: Electrical system 912S Thanks to Thilo, Hugh and Roger for their advise on the installation of a capacitor. Do you think the (+) lead of the capacitor be installed directly into the B+ connection of the regulator or would it be better at another location. I am planning on a firewall install with an Adell clamp (cushion clamp) any inputs on that? RJ ________________________________ Message 7 _____________________________________ Time: 03:15:49 PM PST US Subject: RotaxEngines-List: Re: Hello out There? From: "Roger Lee" Hi Thom, That's true, but is it true with his 582? I would feel better if I personally knew what the cause was so as not to damage anything or get caught too far from home. I'm the kind of guy who thinks that if it was working then why isn't it now and I just have to know the reason why. Just my nature I guess. -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=132136#132136 ________________________________ Message 8 _____________________________________ Time: 03:33:10 PM PST US Subject: RotaxEngines-List: Re: Electrical system 912S From: "Roger Lee" I believe it is supposed to be installed at the +B terminal of the reg/rect. This setup will protect your reg/rect and possibly your instruments. This does depend on how the battery is setup with your on/off switch. Your battery can act as a protector to the system too if it was setup that way. -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=132141#132141 ________________________________ Message 9 _____________________________________ Time: 04:40:18 PM PST US From: "Hugh McKay III" Subject: RE: RotaxEngines-List: Installing a 912 Noel: I have about 17 photographs of my engine taken at various points during the assembly. Mounting my engine to the Allegro engine mount was very simple and the engine fit like a glove. I'm not sure what your engine mount looks like. I may be different than mine. Anyway, attached are a few (5) of the pictures in .jpg format. I'll send five more in a separate email directly to your address. Then I will send the other seven. Hopfully this will not clog up your email. If for some reason the "List" strips the first 5 photos out, let me know and I'll send them direct. Do not archive. Hugh -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Noel Loveys Sent: Friday, August 31, 2007 8:41 AM Subject: RotaxEngines-List: Installing a 912 Thanks Hugh: You can either send them through the list or directly to noelloveys@yahoo.ca if you think they arte a bit too big to send through the list. I have been going through the installation manual but as they say a picture is worth a thousand words. Noel > Time: 10:48:03 AM PST US > From: "Hugh McKay III" > Subject: RE: RotaxEngines-List: Installing a 912 > > > Noel: > > I have a few pictures of installing a 912 on my Allegro 2000. > I will be glad > to copy them to you if you want to see them. Let me know. > > Hugh McKay > Allegro 2000 > 912 UL ------------------------------------------------------------------------------------- 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.