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Gents - For what it is worth - 415 E (conversion) Metal wings The usual VFR instruments ELT Mode C King Radio Paint 949.2 lbs Scott ----- Original Message ----- From: <[EMAIL PROTECTED]> To: "Ed Burkhead" <[EMAIL PROTECTED]>; "'Coupe-List'" <[email protected]> Sent: Friday, December 30, 2005 6:42 AM Subject: Re: WRB Re: [COUPERS-FLYIN] Weight & Balance > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > > Guys > > I recently spoke with a guy with a E model, metal wings, standard tanks, two > modern radios, a new interior and a new paint job. He claims his Coupe has > an empty weight of 1000 pounds. This seems rather high to me. I thought it > should be around 930 to 950. Any comments? > > Glen Davis CFII > Grumman Tiger N70GD > 1946 Ercoupe N3103H > |-----| > _________(*)_________ > o o o > ----- Original Message ----- > From: "Ed Burkhead" <[EMAIL PROTECTED]> > To: "'Coupe-List'" <[email protected]> > Sent: Friday, December 30, 2005 1:31 AM > Subject: FW: WRB Re: [COUPERS-FLYIN] Weight & Balance > > > > ----[Please read http://ercoupers.com/disclaimer.htm before following any > > advice in this forum.]---- > > > > > > > > > > -----Original Message----- > > From: William R. Bayne [mailto:[EMAIL PROTECTED] > > Sent: Friday, December 30, 2005 12:25 AM > > To: Ed Burkhead > > Subject: WRB Re: [COUPERS-FLYIN] Weight & Balance > > > > > > RLYFLYIN > > > > Hi Jose, > > > > The D Model came out of the factory about 815 lbs. (unpainted, fabric > > wings). > > > > The E Model was about 815 (unpainted, fabric wings). Service Ceiling: > > 11,000' > > > > A G Model was around 833 (fabric wings). > > > > To all of the above, add 32-40 lbs. (useless non-structural weight) for > > metal wings. > > > > Forney F-1 Models are around 915+, depending on instrumentation (metal > > wings > > standard). > > > > F-1A Models, Alons and M10s are all heavier, with 1450lb. gross (metal > > wings > > standard). > > > > Subtract above empty weights for "typical" payloads for each model (when > > new). > > > > As Percy has said previously-airplanes, like pilots, tend to get heavier > > as > > they age. > > > > It is easier to remove useless weight from an airframe than from the pilot > > (and passenger;<). > > > > Fuel weight varies with fuel capacity. Fuselage tanks can be (roughly) > > five > > or six gallon. > > Wing tanks can be (roughly) eight or nine. Until measured, one can only > > guess. > > > > The M10 Cadet Owners Manual claims a 24 gallon capacity, of which 23.5 is > > shown useable. > > Alon Service Bulletin A-10 (M10-1) requires the aircraft weight and > > balance > > record be corrected by adding 15.5 lbs. unusable fuel to empty weight of > > aircraft. If we presume fuel to weigh 6 lbs./gal. (as Erco did), the > > amount > > of unusable fuel has been increased to 2.58 gallons! > > So, you can see that the devil is in the details; even in the last > > production airframes. > > > > You stated a full fuel weight to two decimal places, but didn't indicate > > how > > you reached that precise figure. Erco used 6 lbs./gallon in their > > calculations. Gas really averages a bit more, but no one will complain if > > we use the same for our calculations. It would suggest you have 23.28 > > gals. > > usable fuel. That's certainly in the ball park for a coupe with the six > > gallon nose tank and nine gallon wing tanks. Did you measure it? (five > > stars if you did, six if you used the method I recently described on Tech) > > > > For flight planning purposes "Payload" for a given coupe is the allowable > > gross weight less the sum of the airframe's REAL empty weight and the > > weight > > of engine oil and unusable fuel. Few coupes have been recently weighed, > > and > > almost all really weigh even more than their paperwork admits. Few > > unrestored ones are much under 900 lbs. > > > > Knowing YOUR true payload, YOUR usable fuel, YOUR "normal" (leaned?) fuel > > burn and YOUR ground progress allow you to plan and adjust (as > > necessary) cross country capability for maximum utility and (at least to > > me) > > fun with safety, confidence, and pride in a task done well. > > There's a wonderful article on this approach to flying in the January > > '06 AOPA Pilot, p. 85. > > > > Regards, > > > > William R. Bayne > > <____|-(o)-|____> > > (Copyright 2004) > > > > -- > > > > On Dec 29, 2005, at 8:19 PM, <[EMAIL PROTECTED]> wrote: > > > >> Starting to look at some W&B on Ercoupes and have a few questions ... > >> > >> The coupes with Gross Weight of 1400 lbs and metal wings ... > >> > >> What is the typcial empty weight, useful load and payload? > >> > >> I am figuring with full a fuel weight of 139.68 > >> > >> Thanks in advance. > >> > >> Jose Gibert > > > > > > > > > > ============================================================================ == > > To leave this forum go to: http://ercoupers.com/lists.htm > > Search the archives on http://escribe.com/aviation/coupers/ > > > > > > > > > > > > ============================================================================ == > To leave this forum go to: http://ercoupers.com/lists.htm > Search the archives on http://escribe.com/aviation/coupers/ > > > > > __________ NOD32 1.1344 (20051229) Information __________ > > This message was checked by NOD32 antivirus system. > http://www.eset.com > > ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers/
