---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Tue 01/15/08: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:47 AM - Re: Engine Vibration (Roger Lee) 2. 12:02 PM - Coolant Temperature Adapter (rampil) 3. 12:23 PM - Re: Engine Vibration (Mark Burton) 4. 01:27 PM - Re: Coolant Temperature Adapter (R Holder) 5. 02:49 PM - Re: Coolant Temperature Adapter (rampil) 6. 03:39 PM - Re: Re: Coolant Temperature Adapter (Kevin Klinefelter) 7. 06:08 PM - Re: Fine Fuel Filter (rampil) 8. 07:05 PM - Re: Re: Engine Vibration (Hugh) 9. 07:14 PM - Re: Re: Engine Vibration (Hugh) 10. 08:01 PM - Re: Re: 912 EFI kit (Paul McAllister) ________________________________ Message 1 _____________________________________ Time: 07:47:12 AM PST US Subject: RotaxEngines-List: Re: Engine Vibration From: "Roger Lee" Hi Hugh, The Flight Design CT people are having another Fly-In May 15-18, 2008. We are going to have a prop balancing person there at the fly-in for everyone and at a reduced rate. We are in the middle of lining that up right now. We have a number of other planes fly in and spend time with us and have a lot of fun flying out to the coast and for breakfast and BBQ's. You are more than welcome to come and have a good time plus get your prop balanced. The Fly-In is in Mcminnville, Or. Right across the street form the big air museum with the Spruce Goose. We at dinner under the Spruce Goose wing last year. -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=158295#158295 ________________________________ Message 2 _____________________________________ Time: 12:02:00 PM PST US Subject: RotaxEngines-List: Coolant Temperature Adapter From: "rampil" Hi All, My Lockwood adapter and its accompanying VDO probe just arrived This is what it looks like out of the box -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=158359#158359 Attachments: http://forums.matronics.com//files/dsc01929sm_974.jpg http://forums.matronics.com//files/dsc01928small_136.jpg ________________________________ Message 3 _____________________________________ Time: 12:23:27 PM PST US Subject: RotaxEngines-List: Re: Engine Vibration From: "Mark Burton" Hi Hugh, Speaking as someone who: 1 - manufactures dynamic prop balancing equipment 2 - owns a 912 powered aircraft (with a Woodcomp prop) I know something about how gearboxes affect the dynamic balancing process. The balancers I manufacture make use of the gearbox ratio to optimise the removal of engine vibration (1/2 crank) from the prop vibration signal. But it's an optimisation to get a better result, not a requirement. I don't know if other manufacturers have such a feature in their equipment. So to say the gearbox has no effect is not quite right but, in practice, it makes little difference. You can balance a prop on a 912 as easily (or as difficult!) as on any other engine. Anyone who balances props will tell you that there are a lot of factors that affect the quality of balance achieved. Factors such as: carb balance, ignition performance, engine mounts, airframe resonance, prop blade pitch balance, wind speed and direction, RPM used, and so on. Most of these factors will have more of an influence on the balancing process than whether the engine has a PSRU or not. I think the people you asked are either ill informed or they really didn't want the job. Cheers, Mark Read this topic online here: http://forums.matronics.com/viewtopic.php?p=158365#158365 ________________________________ Message 4 _____________________________________ Time: 01:27:12 PM PST US From: R Holder Subject: Re: RotaxEngines-List: Coolant Temperature Adapter rampil wrote: > Hi All, > > My Lockwood adapter and its accompanying VDO probe just arrived > This is what it looks like out of the box Can you tell us the part numbers you ordered ? The visible part number (323-057D) doesn't come up on their website It might if their website was as good and user-friendly as the Aircraft Spruce one ! Richard Holder ________________________________ Message 5 _____________________________________ Time: 02:49:15 PM PST US Subject: RotaxEngines-List: Re: Coolant Temperature Adapter From: "rampil" Hi Richard, The funny thing is that it is not yet in the catalog or the web site listings. I found out about it last week when I was told here that GRT had such a device available, but then I could not find it on their site either. I called Lockwood since I do a bit of business with them and asked Kerry. He and the order taking people knew just what I was asking for. Just ask (or write for) the Coolant temperature Tee for the 912 series. The part number in the photo is on the VDO packaging for the included temp probe. I don't have the invoice in front of me at the moment, but I believe it was about $44.00 for both, and it was in stock -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=158395#158395 ________________________________ Message 6 _____________________________________ Time: 03:39:23 PM PST US From: Kevin Klinefelter Subject: Re: RotaxEngines-List: Re: Coolant Temperature Adapter Hi All, I received mine from GRT and it looks very similar. Part # H2O-fit-01 cost $30 without a sensor. They have two port units also so you can have a pressure in addition to temp reading. Kevin rampil wrote: > > Hi Richard, > > The funny thing is that it is not yet in the catalog or the web site listings. > I found out about it last week when I was told here that GRT had such > a device available, but then I could not find it on their site either. > > I called Lockwood since I do a bit of business with them and asked Kerry. > He and the order taking people knew just what I was asking for. Just ask > (or write for) the Coolant temperature Tee for the 912 series. > > The part number in the photo is on the VDO packaging for the included > temp probe. I don't have the invoice in front of me at the moment, but > I believe it was about $44.00 for both, and it was in stock > > -------- > Ira N224XS > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=158395#158395 > > > ________________________________ Message 7 _____________________________________ Time: 06:08:18 PM PST US Subject: RotaxEngines-List: Re: Fine Fuel Filter From: "rampil" Hi Hugh, I have not previously heard that Rotax has a fine, pre-carb filter. I am trying to find your figure 22 on page 38 of the 912 Install manual, but my page 38 is talking about the Engine suspension and the lord mounts. I am looking at the Rotax 912 series Install manual dated May 01, 2007 In this revision page 38 falls into section 10.3 The Fuel system is in section 14, starting page 83. There is a fine filter in figure 54. This filter varies by airframe and manufacturer. It is not a Rotax part. Some people use a gascolator, others a disposable plastic screen in glass filter. Don't they talk about this in your Allegro POH? If it has a bowl, it sounds like a gascolator, these usually get serviced in two ways, with a drain petcock for everyday, and occasionally, removing and cleaning the screen inside. The Allegro manual is going to be the best place to get the exact details. Good Luck, -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=158438#158438 ________________________________ Message 8 _____________________________________ Time: 07:05:47 PM PST US From: "Hugh" Subject: RE: RotaxEngines-List: Re: Engine Vibration Mark: Thanks for your input and knowledge. From your note I assume you have dynamically balanced your 912 and WoodComp prop together. If so, I would like to know where and how you added mass, if mass was needed to get every thing (engine and prop)in balance. Since the spinner and spinner flange are fiberglass, the firm near here (H&H Propellers) www.hhtriad.com/hhpropellers.asp that I am talking with (who hopefully will do the job) seem to be concerned that there may be no place to add mass except on the aluminum hub, and if that is so, where is that mass to be added? If it is to be added at one of the six 8mm thru bolts, is it added by using thin washers on the backside of the gearbox flange before the final safety wiring is attached through the bolt heads? Hugh -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Mark Burton Sent: Tuesday, January 15, 2008 3:22 PM Subject: RotaxEngines-List: Re: Engine Vibration Hi Hugh, Speaking as someone who: 1 - manufactures dynamic prop balancing equipment 2 - owns a 912 powered aircraft (with a Woodcomp prop) I know something about how gearboxes affect the dynamic balancing process. The balancers I manufacture make use of the gearbox ratio to optimise the removal of engine vibration (1/2 crank) from the prop vibration signal. But it's an optimisation to get a better result, not a requirement. I don't know if other manufacturers have such a feature in their equipment. So to say the gearbox has no effect is not quite right but, in practice, it makes little difference. You can balance a prop on a 912 as easily (or as difficult!) as on any other engine. Anyone who balances props will tell you that there are a lot of factors that affect the quality of balance achieved. Factors such as: carb balance, ignition performance, engine mounts, airframe resonance, prop blade pitch balance, wind speed and direction, RPM used, and so on. Most of these factors will have more of an influence on the balancing process than whether the engine has a PSRU or not. I think the people you asked are either ill informed or they really didn't want the job. Cheers, Mark Read this topic online here: http://forums.matronics.com/viewtopic.php?p=158365#158365 ________________________________ Message 9 _____________________________________ Time: 07:14:45 PM PST US From: "Hugh" Subject: RE: RotaxEngines-List: Re: Engine Vibration Roger: Thanks for the information and the invite to Oregon. I lived in Oregon (Salem) for two years back in the 60's and loved it. However, I hope to get my prop done closer to home at H&H Propellers www.hhtriad.com/hhpropellers.asp and before May. North Carolina to Oregon is a long haul in an Allegro 2000 for just a prop balance. My rear end might not make it!! Thanks again though. I'll keep you informed as to the outcome here in NC. Hugh -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Roger Lee Sent: Tuesday, January 15, 2008 10:47 AM Subject: RotaxEngines-List: Re: Engine Vibration Hi Hugh, The Flight Design CT people are having another Fly-In May 15-18, 2008. We are going to have a prop balancing person there at the fly-in for everyone and at a reduced rate. We are in the middle of lining that up right now. We have a number of other planes fly in and spend time with us and have a lot of fun flying out to the coast and for breakfast and BBQ's. You are more than welcome to come and have a good time plus get your prop balanced. The Fly-In is in Mcminnville, Or. Right across the street form the big air museum with the Spruce Goose. We at dinner under the Spruce Goose wing last year. -------- Roger Lee Tucson, Az. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=158295#158295 ________________________________ Message 10 ____________________________________ Time: 08:01:55 PM PST US From: Paul McAllister Subject: Re: RotaxEngines-List: Re: 912 EFI kit Hi Jason, Could you tell me how many of your engines are in flying aircraft and approximately how many hours (agregated) have been accumulaed ? Thanks, Paul ----- Original Message ---- From: jason Parker Sent: Monday, January 14, 2008 12:59:48 PM Subject: Re: RotaxEngines-List: Re: 912 EFI kit I have seen may people attempt to do fuel injection, but at www.experimentalfuelinjection.com , we do it right. First off, fuel injection requires 8-9amps no matter who is making the set up. With this in mind, the only way to properly run fuel injection is with a 55 amp external alt. Our set ups are simply the best. We offer 4 different configurations of 912's and 5 different configurations of 914's. From Intercooled direct port fuel injection, to truly redundant set ups on fuel and ignition, we have it all. Regards Jason www.experimentalfuelinjection.com 661 428-1850 Looking for last minute shopping deals? ------------------------------------------------------------------------------------- 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.