---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Wed 04/12/06: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:32 AM - Re: World's best airplane battery (Warren Hurd) 2. 06:33 AM - Re: P-MagsP-Mags (sportav8r@aol.com) 3. 07:39 AM - Re: P-Mags P-Mags (Darrell Reiley) 4. 08:03 AM - Chrome Dome (Smitty) 5. 08:18 AM - Re: P-Mags P-Mags (sportav8r@aol.com) 6. 02:54 PM - Re: Electronic ignition conversion (Mike Robertson) 7. 03:08 PM - Re: P-Mags P-Mags (Kevin Horton) 8. 04:11 PM - Re: P-Mags P-Mags (Darrell Reiley) 9. 06:26 PM - Re: Congrats to Mark at the (Emrath) 10. 08:04 PM - Re: Congrats to Mark at the (Fiveonepw@aol.com) 11. 10:22 PM - Re: P-Mags P-Mags (=?iso-8859-1?Q?Mich=E8le_Delsol?=) ________________________________ Message 1 _____________________________________ Time: 05:32:52 AM PST US From: Warren Hurd Subject: RV-List: Re: World's best airplane battery --> RV-List message posted by: Warren Hurd How about a discount for a dozen of them? I would use them for a electric hybrid corn powered RV-12 :-) AHYUP warren My DeWalt is tired do not archive > >--> RV-List message posted by: "BillDube@killacycle.com" > > > > I am considering producing state-of-the art, very lightweight, ultra > >long life, starting batteries for experimental aircraft. They won't > >be cheap to make, however. I'd like to get some feedback as to the > >market for these before I put a big effort into this. > > > > Here are the specs: > > > >14 volts > >480 cranking amps > >8.8 amp-hours > >2.7 pounds (Yes, really just 2.7 pounds.) > >10 year warrantee (prorated) > >Completely sealed battery > >Safer than lead acid or NiCad > >Built-in electronic monitoring system warns of over-voltage, > >under-voltage, over heating, or internal battery fault. > > > > That is all the good news. The downside is that they will cost about > >$475. I'm not sure how many folks would want a 10 year battery (at > >least) that weighs about 1/3 as much as an "ordinary" battery, but > >costs four times as much. > > > > The specs above are real. I have personally tested these batteries > >and they do, indeed, perform this well, so that is not an issue. I > >know I can make these. I'm going to make one for myself. The question > >is, will folks buy them if I more of them? > > > > Let me know if you think you would be interested in such a high-tech > >battery at this cost. > > > > Bill Dube' > > > > > > >Time: 08:00:44 PM PST US >From: Bill Dube >Subject: Re: RV-List: World's best airplane battery > >--> RV-List message posted by: Bill Dube > >The cycle life is discharge rate dependent. It is at least 1000 100% DOD >cycles for 10C discharge. For 1 C discharge, it is over 2000 cycles. >This is retaining 80% capacity. If 50% capacity is acceptable, the cycle >life is much much longer. > >Bill D. > >jay pearlman wrote: > > >--> RV-List message posted by: jay pearlman > > > >What is the cycle lifetime - full discharge to full charge? > > jp > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 06:33:16 AM PST US From: sportav8r@aol.com Subject: Re: RV-List: P-MagsP-Mags --> RV-List message posted by: sportav8r@aol.com >From actual testing on the ground, of course. Reproducible with 100% repeatability, and confirmed by lots of other users. You got a good one ;-) -----Original Message----- From: Darwin N. Barrie Sent: Tue, 11 Apr 2006 09:04:40 -0500 Subject: Re: RV-List: P-MagsP-Mags --> RV-List message posted by: "Darwin N. Barrie" I have the Emag and Pmag set up. 55 hours now. My Pmag cut off point is 680 rpm. Don't know where you get the 900 rpm figure. Darwin N. Barrie Chandler AZ ________________________________ Message 3 _____________________________________ Time: 07:39:57 AM PST US From: Darrell Reiley Subject: Re: RV-List: P-Mags P-Mags --> RV-List message posted by: Darrell Reiley I would send the P-Mags back to the manufacture for a 100% full replacement as the 900 rpm range is unacceptable! Darrell Do Not Archive --------------------------------- ________________________________ Message 4 _____________________________________ Time: 08:03:33 AM PST US Subject: RV-List: Chrome Dome From: "Smitty" --> RV-List message posted by: "Smitty" For those of us RV builders out there who want a "no paint" metal finish, here's an idea, how bout' chrome paint? A friend of mine sent me this link. I think I'm going to stick with just ordinary paint myself, but thought some of yous guys might find this interesting. http://www.alsacorp.com/chrome.htm Smittys RV-9A http://SmittysRV.com do not archive ________________________________ Message 5 _____________________________________ Time: 08:18:06 AM PST US From: sportav8r@aol.com Subject: Re: RV-List: P-Mags P-Mags --> RV-List message posted by: sportav8r@aol.com They (emagair) don't seem to think so. -----Original Message----- From: Darrell Reiley Sent: Wed, 12 Apr 2006 07:34:03 -0700 (PDT) Subject: Re: RV-List: P-Mags P-Mags --> RV-List message posted by: Darrell Reiley I would send the P-Mags back to the manufacture for a 100% full replacement as the 900 rpm range is unacceptable! Darrell Do Not Archive --------------------------------- ________________________________ Message 6 _____________________________________ Time: 02:54:08 PM PST US From: "Mike Robertson" Subject: RE: RV-List: Electronic ignition conversion --> RV-List message posted by: "Mike Robertson" In this case it is considered a major change and requires a minimum of five hours of flight testing. Check your aircraft's operating limitations to be sure to do exactly what it says to do for a major change. Mike Robertson Das Fed >From: "Doug Weiler" >To: >Subject: RV-List: Electronic ignition conversion >Date: Tue, 11 Apr 2006 18:22:21 -0500 > >--> RV-List message posted by: "Doug Weiler" > >Fellow Listers: > >I am considering converting my RV-4 from a magneto ignition system to a >dual >Lightspeed EI system. Do any of you know whether making this conversion is >considered a major airframe change which would require an additional flight >test period (I think it is 5 hours on my airworthiness certificate, which I >do not have with me at the moment). > >Thanks > >Doug Weiler >RV-5, N722DW, 280 hours TT > > ________________________________ Message 7 _____________________________________ Time: 03:08:26 PM PST US From: Kevin Horton Subject: Re: RV-List: P-Mags P-Mags --> RV-List message posted by: Kevin Horton On 12 Apr 2006, at 10:34, Darrell Reiley wrote: > --> RV-List message posted by: Darrell Reiley > > > I would send the P-Mags back to the manufacture for a 100% full > replacement as the 900 rpm range is unacceptable! > Does it really matter if the P-Mag can't handle an electrical power loss at idle on the ground? What is idle rpm in flight at typical airspeeds? What would the operational consequences be to having to keep the engine at 1,000 rpm minimum in flight, if the electrical system had failed? Kevin Horton RV-8 (finishing kit) Ottawa, Canada http://www.kilohotel.com/rv8 ________________________________ Message 8 _____________________________________ Time: 04:11:45 PM PST US From: Darrell Reiley Subject: Re: RV-List: P-Mags P-Mags --> RV-List message posted by: Darrell Reiley No I guess you could say it doesn't matter but here's what's advertised... "P-MAG offers a unique solution. Instead of backing-up the aircraft buss, the P-MAG produces its own power (at 700 rpm and above). The aircraft buss acts as the back-up most of the time. With this arrangement, dual electronic ignitions can be run "clean". No back-up batteries and no back-up magnetos." I guess if you wanted you could take off with a 70 rpm mag drop on one mag and a 300 prm mag drop on the other mag. When I spend my hard earned $$$'s I want to get what I paid for. Darrell Do Not Archive Kevin Horton wrote: --> RV-List message posted by: Kevin Horton On 12 Apr 2006, at 10:34, Darrell Reiley wrote: > --> RV-List message posted by: Darrell Reiley > > > I would send the P-Mags back to the manufacture for a 100% full > replacement as the 900 rpm range is unacceptable! > Does it really matter if the P-Mag can't handle an electrical power loss at idle on the ground? What is idle rpm in flight at typical airspeeds? What would the operational consequences be to having to keep the engine at 1,000 rpm minimum in flight, if the electrical system had failed? Kevin Horton RV-8 (finishing kit) Ottawa, Canada http://www.kilohotel.com/rv8 "Do Not Archive" Darrell Reiley RV7A "Reiley Rocket" N622DR Reserved --------------------------------- ________________________________ Message 9 _____________________________________ Time: 06:26:16 PM PST US From: "Emrath" Subject: Re: RV-List: Congrats to Mark at the --> RV-List message posted by: "Emrath" Way to go Mark, first the Lindy award and now this!!!! It just keeps getting better doesn't it. So what ya gona do for an encore? Marty Time: 10:45:11 AM PST US From: "James Clark" Subject: Congrats to Mark at the "Possum Works"!!! --> RV-List message posted by: "James Clark" Mucho CONGRATS (!!!) Mark. * BEST METAL* N51PW 2004 PHILLIPS/VANS RV-6A MARK A. PHILLIPS COLUMBIA, TN 38401 And in the spirit of th e"Possum Works" vernacular .... I jes **KNEW** yewd be gitt'n sup 'in! James ... mighty proud to have had you flying "off my wing" ________________________________ Message 10 ____________________________________ Time: 08:04:03 PM PST US From: Fiveonepw@aol.com Subject: Re: RV-List: Congrats to Mark at the --> RV-List message posted by: Fiveonepw@aol.com In a message dated 04/12/2006 7:27:42 PM Central Standard Time, emrath@comcast.net writes: So what ya gona do for an encore? >>>>> Give ya a couple of Tech Counselor inspections then get a picture of YOUR plane departing MQY!!! Let me know when yer ready.... THANKS! Mark ________________________________ Message 11 ____________________________________ Time: 10:22:17 PM PST US From: =?iso-8859-1?Q?Mich=E8le_Delsol?= Subject: RE: RV-List: P-Mags P-Mags --> RV-List message posted by: =?iso-8859-1?Q?Mich=E8le_Delsol?= PMag minimum RPM has been discussed in the past. The consensus seems to have been that the whirlwind effect would maintain the propeller spinning above 700 RPM, which means that the PMags should put out power. Now, if the PMag is not generating its own power above 700 RPM then it is not up to specs. This is another issue which should definitely be taken up with eMagair and is probably a case by case issue. Michele - RV8 Fuselage - going the dual PMag route. -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Kevin Horton Sent: jeudi 13 avril 2006 00:07 Subject: Re: RV-List: P-Mags P-Mags --> RV-List message posted by: Kevin Horton On 12 Apr 2006, at 10:34, Darrell Reiley wrote: > --> RV-List message posted by: Darrell Reiley > > > I would send the P-Mags back to the manufacture for a 100% full > replacement as the 900 rpm range is unacceptable! > Does it really matter if the P-Mag can't handle an electrical power loss at idle on the ground? What is idle rpm in flight at typical airspeeds? What would the operational consequences be to having to keep the engine at 1,000 rpm minimum in flight, if the electrical system had failed? Kevin Horton RV-8 (finishing kit) Ottawa, Canada http://www.kilohotel.com/rv8