---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Fri 05/10/13: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:39 AM - Re: Compressor (Dale) 2. 07:43 AM - Re: Re: Compressor (Larry Pine) 3. 09:23 AM - Re: Re: Compressor (Bitterlich, Mark G CIV NAVAIR, WD) 4. 10:48 AM - Re: Re: Compressor (Mark Davis) 5. 11:17 AM - Re: Re: Compressor (Larry Pine) 6. 11:17 AM - Re: Re: Compressor (Richard Goode) 7. 11:36 AM - Re: Re: Compressor (Bitterlich, Mark G CIV NAVAIR, WD) 8. 06:00 PM - Auto Plug Conversion (Mozam) ________________________________ Message 1 _____________________________________ Time: 06:39:15 AM PST US Subject: Yak-List: Re: Compressor From: "Dale" Compressor same on both Ci and Yak Read this topic online here: http://forums.matronics.com/viewtopic.php?p=400253#400253 ________________________________ Message 2 _____________________________________ Time: 07:43:02 AM PST US From: Larry Pine Subject: Re: Yak-List: Re: Compressor `And appearantly the AN2 is the same.- I fly with an AN2 compressor.- A bout 4-5 inches longer and it appears there is a second compressor on top o f what would be the normal M14 compressor.- Works great.- I can recharg e an empty bottle at idle in about 5 minutes.=0A=0A=0ALarry Pine=0A=0A=0A__ ______________________________=0AFrom: Dale =0ATo: yak-list@ matronics.com =0ASent: Friday, May 10, 2013 6:36 AM=0ASubject: Yak-List: Re =0A=0ACompressor same on both Ci and Yak=0A=0A=0A=0A=0ARead this topic onli ne here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=400253#400253 =========================0A ================= ________________________________ Message 3 _____________________________________ Time: 09:23:49 AM PST US Subject: RE: Yak-List: Re: Compressor From: "Bitterlich, Mark G CIV NAVAIR, WD" That's a sweet setup Larry. Mark -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine Sent: Friday, May 10, 2013 10:40 Subject: Re: Yak-List: Re: Compressor `And appearantly the AN2 is the same. I fly with an AN2 compressor. About 4-5 inches longer and it appears there is a second compressor on top of what would be the normal M14 compressor. Works great. I can recharge an empty bottle at idle in about 5 minutes. Larry Pine From: Dale Sent: Friday, May 10, 2013 6:36 AM Subject: Yak-List: Re: Compressor Compressor same on both Ci and Yak ________________________________ Message 4 _____________________________________ Time: 10:48:20 AM PST US From: "Mark Davis" Subject: Re: Yak-List: Re: Compressor Does anyone know if the AN2 compressor pulls significantly more horsepower to run the higher volume output? I've seen the AN2 compressors on eBay before and knew they would fit but didn't know if they pulled harder and would cause a slightly higher fuel burn unless they were unloaded in flight. Mark Davis N44YK ----- Original Message ----- From: "Bitterlich, Mark G CIV NAVAIR, WD" Sent: Friday, May 10, 2013 10:21 AM Subject: RE: Yak-List: Re: Compressor > > > That's a sweet setup Larry. > > Mark > > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine > Sent: Friday, May 10, 2013 10:40 > To: yak-list@matronics.com > Subject: Re: Yak-List: Re: Compressor > > `And appearantly the AN2 is the same. I fly with an AN2 compressor. > About 4-5 inches longer and it appears there is a second compressor on > top of what would be the normal M14 compressor. Works great. I can > recharge an empty bottle at idle in about 5 minutes. > > > Larry Pine > > From: Dale > To: yak-list@matronics.com > Sent: Friday, May 10, 2013 6:36 AM > Subject: Yak-List: Re: Compressor > > > > Compressor same on both Ci and Yak > > > ________________________________ Message 5 _____________________________________ Time: 11:17:25 AM PST US From: Larry Pine Subject: Re: Yak-List: Re: Compressor I can just tell you from- my experience.. I can unload mine in flight and i see virtually no difference in % or speed between the two.- Because it is bigger it has to be clocked at a different angle which in my case requi red the oil hose from the screen to the pump to be-made longer-and re-r outed.- Love the extra air though...=0A=0A-=0ALarry Pine=0A=0A=0A______ __________________________=0AFrom: Mark Davis =0ATo: yak-list@matronics.com =0ASent: Friday, May 10, 2013 10:45 AM=0ASubject: Re vis" =0A=0ADoes anyone know if the AN2 compressor pul ls significantly more horsepower =0Ato run the higher volume output?- I'v e seen the AN2 compressors on eBay =0Abefore and knew they would fit but di dn't know if they pulled harder and =0Awould cause a slightly higher fuel b urn unless they were unloaded in flight.=0A=0AMark Davis=0AN44YK=0A=0A=0A-- --- Original Message ----- =0AFrom: "Bitterlich, Mark G CIV NAVAIR, WD" =0ATo: =0ASent: Friday, May 10, 2013 10:21 AM=0ASubject: RE: Yak-List: Re: Compressor=0A=0A=0A> --> Yak -List message posted by: "Bitterlich, Mark G CIV NAVAIR, WD" =0A> =0A>=0A> That's a sweet setup Larry.=0A>=0A> Mark=0A>=0A> =0A> -----Original Message-----=0A> From: owner-yak-list-server@matronics.c om=0A> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine =0A> Sent: Friday, May 10, 2013 10:40=0A> To: yak-list@matronics.com=0A> Su bject: Re: Yak-List: Re: Compressor=0A>=0A> `And appearantly the AN2 is the same.- I fly with an AN2 compressor.=0A> About 4-5 inches longer and it appears there is a second compressor on=0A> top of what would be the normal M14 compressor.- Works great.- I can=0A> recharge an empty bottle at i dle in about 5 minutes.=0A>=0A>=0A> Larry Pine=0A>=0A> From: Dale =0A> To: yak-list@matronics.com=0A> Sent: Friday, May 10, 2013 6:36 A M=0A> Subject: Yak-List: Re: Compressor=0A>=0A>=0A> --> Yak-List message po sted by: "Dale" =0A>=0A> Compressor same on both Ci and Yak =========================0A ======================= ________________________________ Message 6 _____________________________________ Time: 11:17:54 AM PST US From: "Richard Goode" Subject: RE: Yak-List: Re: Compressor By definition they will use more power, but not really significant. Standard compressor uses a maximum of 3 hp. Richard Goode Aerobatics Rhodds Farm Lyonshall Hereford HR5 3LW Tel: +44 (0) 1544 340120 Fax: +44 (0) 1544 340129 www.russianaeros.com -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis Sent: 10 May 2013 18:45 Subject: Re: Yak-List: Re: Compressor Does anyone know if the AN2 compressor pulls significantly more horsepower to run the higher volume output? I've seen the AN2 compressors on eBay before and knew they would fit but didn't know if they pulled harder and would cause a slightly higher fuel burn unless they were unloaded in flight. Mark Davis N44YK ----- Original Message ----- From: "Bitterlich, Mark G CIV NAVAIR, WD" Sent: Friday, May 10, 2013 10:21 AM Subject: RE: Yak-List: Re: Compressor > > > That's a sweet setup Larry. > > Mark > > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine > Sent: Friday, May 10, 2013 10:40 > To: yak-list@matronics.com > Subject: Re: Yak-List: Re: Compressor > > `And appearantly the AN2 is the same. I fly with an AN2 compressor. > About 4-5 inches longer and it appears there is a second compressor on > top of what would be the normal M14 compressor. Works great. I can > recharge an empty bottle at idle in about 5 minutes. > > > Larry Pine > > From: Dale > To: yak-list@matronics.com > Sent: Friday, May 10, 2013 6:36 AM > Subject: Yak-List: Re: Compressor > > > > Compressor same on both Ci and Yak > > > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ________________________________ Message 7 _____________________________________ Time: 11:36:14 AM PST US Subject: RE: Yak-List: Re: Compressor From: "Bitterlich, Mark G CIV NAVAIR, WD" Mark, if you see them listed again on EBay again, please do me a favor and send an alert my way, because I truly want one or two myself. Maybe three. :-) I think we could discuss the issue of power robbing pretty easily. Given that the volumetric output of this compressor is higher than the one we currently have, when the pump is filling an empty bottle, it clearly is going to draw more power from the engine. How much exactly would require a good deal of engineering data that would probably be an exercise in frustration. However, that is only transitional since the tank is going to fill more rapidly and reach the point where the blow-off valve opens to relieve over-pressure earlier. Thus the distributed load between the two while filling is going to be about the same right? So the question then becomes how much power is being robbed from the engine as the compressor produces enough volume at approximately 735 PSI to open the over-pressure valve. Since it has a higher volume output, the engine is going to be putting power into the compressor for an equivalently longer period of time as that excess volume is blown off through the relief valve. So a fair comparison of the power robbed from the engine could be computed by knowing the exact differences in volume under load at 735 PSI for each compressor type. My personal opinion is that you would be hard pressed to feel the difference. This whole concept of "unloading" the compressor with the use of a home-made arrangement of either opening the snot valve, or more expensive yet, with the use of an electrically controlled relief valve has always struck me as "urban legend". Yes, I have seen it on quite a number of Unlimited Competitive Sukhoi's, and I am also aware of exactly who came up with this concept in the first place. These same folks are using every trick in the book to increase aircraft performance in ANY WAY POSSIBLE, and they'll do it if there is even a CHANCE of it being real. These same gents were also plugging up the accelerator pump in the pressure carbs too, which in the end turned up to be less than a good thing. So in the end, I ask myself this question: Do you think that a three horsepower four stroke gas lawnmower engine could drive our current compressor to about 2000 RPM and deliver 735 PSI of output? Yes I believe it would. But if there is any doubt, I am DARN sure that a 5 HP engine would! So, at load the compressor might be robbing 3-5 HP or so ... And worse yet, as the compressor wears out, once the tank is full, it draws even less load. So how much additional fuel do you think you'll burn for about three horsepower? Then there is the issue of bearing loads. Will this compressor last longer if it is operating under load at all times, or if you release all load and just have it running along at full speed against zero load? I'm really not sure. The question is not as easy to answer as one might think. In any case, I do not unload mine, and the original compressor is now reaching 800 hours and is still working perfectly. Of course if you DO unload it, in theory the only difference between the two would be frictional load, which would be very minimal. Too long an email I know, but this is something I have had an opinion about for a long time and just never felt like verbalizing it. Unless you are looking for the ultimate edge, I don't believe unloading compressors is really necessary... but I would be more than glad to hear opinions otherwise based on factual info. In the interim, I want one of the AN2 compressors. :-) mgb -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis Sent: Friday, May 10, 2013 13:45 Subject: Re: Yak-List: Re: Compressor Does anyone know if the AN2 compressor pulls significantly more horsepower to run the higher volume output? I've seen the AN2 compressors on eBay before and knew they would fit but didn't know if they pulled harder and would cause a slightly higher fuel burn unless they were unloaded in flight. Mark Davis N44YK ----- Original Message ----- From: "Bitterlich, Mark G CIV NAVAIR, WD" Sent: Friday, May 10, 2013 10:21 AM Subject: RE: Yak-List: Re: Compressor > > > That's a sweet setup Larry. > > Mark > > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine > Sent: Friday, May 10, 2013 10:40 > To: yak-list@matronics.com > Subject: Re: Yak-List: Re: Compressor > > `And appearantly the AN2 is the same. I fly with an AN2 compressor. > About 4-5 inches longer and it appears there is a second compressor on > top of what would be the normal M14 compressor. Works great. I can > recharge an empty bottle at idle in about 5 minutes. > > > Larry Pine > > From: Dale > To: yak-list@matronics.com > Sent: Friday, May 10, 2013 6:36 AM > Subject: Yak-List: Re: Compressor > > > > Compressor same on both Ci and Yak > > > ________________________________ Message 8 _____________________________________ Time: 06:00:53 PM PST US Subject: Yak-List: Auto Plug Conversion From: "Mozam" I'm probably late to the party, but converting to auto plugs and wires with the Dennis Savarese conversion kit is GREAT. You can find it at yak-52.com. (I have NOTHING to do with Dennis or his products.) I installed it this week and was amazed at how much smoother the engine ran and how much easier cold starts are now. Just wish I had installed it earlier! Thanks Dennis for supporting our planes with such a quality product. -Steve Dalton Yak-52TW #1 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=400309#400309 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-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/yak-list Browse Digests http://www.matronics.com/digest/yak-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.