---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sun 03/23/08: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:13 AM - 912 oil termostat or perhaps a heat exchanger () 2. 06:03 AM - Re: 912ULS Oil thermostat (Catz631@aol.com) 3. 10:58 AM - Re: 912ULS Oil thermostat (paul wilson) 4. 12:38 PM - Re: Does it have a Clutch? (Thom Riddle) 5. 08:35 PM - Re: Re: Does it have a Clutch? (Les Goldner) ________________________________ Message 1 _____________________________________ Time: 05:13:36 AM PST US Subject: RotaxEngines-List: 912 oil termostat or perhaps a heat exchanger From: Les Another possibility to get the oil temperature up fast in a safe way is to install a heat exchanger between the water and the oil flow. Because locally there has been several successfull cases of using a small aluminum "Laminova" type heat exchanger and no separate oil radiator at all I decided to go for this too. But the original water radiator need to be well placed to begin with with sufficient air suck out to take the extra heat load in summertime. Have no results yet but can send a picture of my 701 heat exchanger installation if you are interested. rgrds Max Max Johansson, Helsinki, just now installing a 912S in my 701SP >On Sat, Mar 22, 2008 at 12:59 AM, Les Goldner > wrote: >> >> Although it was 60 degrees Fahrenheit today, >> I still had to wait 15 minutes for my 100HP 912ULS oil >> to get to 120F+degrees so that I could take off. >> While waiting, it dawned on me that maybe I need to consider >> a bypass thermostat for the oil cooler/radiator. >> There is no mention of such a bypass in the Rotax >> Installation Manual or in my Zenith 701 manual. >> Have any of you installed oil bypass thermostats? Is this something >> that I should consider adding, or will it just add another point of >> potential failure that should be avoided? >> Les ________________________________ Message 2 _____________________________________ Time: 06:03:40 AM PST US From: Catz631@aol.com Subject: Re: RotaxEngines-List: 912ULS Oil thermostat Oil thermostats can be good things.Make sure you purge your oil system after installation.I had the same problem on a Kitfox and have installed a set of shutters at the oil cooler which are operated from a control in the cockpit.It's a lot better than tape over the cooler but probably not as effective as the thermostat. Dick Maddux **************Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom00030000000001) ________________________________ Message 3 _____________________________________ Time: 10:58:20 AM PST US From: paul wilson Subject: Re: RotaxEngines-List: 912ULS Oil thermostat Here are several useful items for cold weather operation of the Rotax that I have seen at various air shows 1) The much discussed oil thermostat which bypasses the cooler 2) Simple ball valves that do the same thing as (1) 3) Thermostat for the radiator. Most people use the BMW unit which is designed to install in the Rad hoses.Custom machined housing for a regular auto stat has also been seen. 4) Shutters on the radiator with pilot cockpit control. 5) Removable shutter for the oil cooler. Slide in custom grooves. 6) Duct tape over either or both the radiator or oil cooler. Different solutions with the ingenuity of the builder. Paul ________________________________ Message 4 _____________________________________ Time: 12:38:51 PM PST US Subject: RotaxEngines-List: Re: Does it have a Clutch? From: "Thom Riddle" Les, Look in a Rotax Parts Manual to find the part number and description. I believe (as in not certain) the last three digits indicate various versions of prop shaft depending upon whether or not it has accommodation for options like governor for constant speed props or other variations, including which engine it is for, as in 912UL/A/F/ULS/S or 914UL/F. I also think that the first three numbers, in your case 887, indicate that the gearbox does have a clutch. The 888 series do not have the clutch. -------- Thom Riddle N221FA Allegro 2000 912UL N197BG FS1/447 -------------------- Believe nothing, no matter where you read it or who has said it, not even if I have said it, unless it agrees with your own reason and your own common sense. - Buddha Read this topic online here: http://forums.matronics.com/viewtopic.php?p=171999#171999 ________________________________ Message 5 _____________________________________ Time: 08:35:36 PM PST US From: "Les Goldner" Subject: RE: RotaxEngines-List: Re: Does it have a Clutch? Thom, I did look at the parts list and Doc (is email is "Bill and Marsha") also confirmed that my gear box has a clutch. I guess now I can break a prop or two without destroying my crank shaft (maybe). Thank you, Les > -----Original Message----- > From: owner-rotaxengines-list-server@matronics.com > [mailto:owner-rotaxengines-list-server@matronics.com] On > Behalf Of Thom Riddle > Sent: Sunday, March 23, 2008 12:36 PM > To: rotaxengines-list@matronics.com > Subject: RotaxEngines-List: Re: Does it have a Clutch? > > --> > > Les, > > Look in a Rotax Parts Manual to find the part number and > description. I believe (as in not certain) the last three > digits indicate various versions of prop shaft depending upon > whether or not it has accommodation for options like governor > for constant speed props or other variations, including which > engine it is for, as in 912UL/A/F/ULS/S or 914UL/F. I also > think that the first three numbers, in your case 887, > indicate that the gearbox does have a clutch. The 888 series > do not have the clutch. > > -------- > Thom Riddle > N221FA Allegro 2000 912UL > N197BG FS1/447 > -------------------- > Believe nothing, no matter where you read it or who has said > it, not even if I have said it, unless it agrees with your > own reason and your own common sense. > - Buddha > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=171999#171999 > > > > > > > > Photoshare, and much much more: > > ------------------------------------------------------------------------------------- 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.