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  #1  
Old 12-29-2021, 07:13 AM
bobg56 bobg56 is offline
 
Join Date: Nov 2018
Location: Peachtree City, GA
Posts: 223
Default Empty Weight Question

I have a Legacy 2010 RV 12 the empty weight is listed as 722 lbs...I'm not the builder, I don't know if it was weighed before it was painted or not. It has the exterior/interior light kit, D-180, AP74 auto pilot, wheel pants, 2 blade prop, and is painted. I'm wondering if someone can tell me about how much weight paint adds and if 722# seems a bit low given what I have on it? I'm thinking 750 is probably the correct weight without having to go through the hassle of re-weighing it...what are your empty weights with similar equipment? Thanks...
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  #2  
Old 12-29-2021, 07:29 AM
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Mel Mel is offline
 
Join Date: Mar 2005
Location: Dallas area
Posts: 11,387
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You really need to go through the "hassle" of reweighing your airplane. You need to know the empty of your airplane. Otherwise you cannot accurately calculate current weight & balance. And this is a requirement for every flight.

Paint weight can vary a lot depending on who did the painting. Paint can easily vary from 18 to 35 lbs. and even more.
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Mel Asberry, DAR since the last century. Over 1,000 certifications accomplished. Discount for Veterans, Law Enforcement, Fire Fighters.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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  #3  
Old 12-29-2021, 08:16 AM
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Piper J3 Piper J3 is offline
 
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Location: Hinckley, Ohio
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What Mel said ^^^^

I have weighed my airplane several times over five year period. I've used two different sets of scales, calculated W&B, and included same with current equipment list in the POH.
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Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 760

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  #4  
Old 12-29-2021, 09:18 AM
bobg56 bobg56 is offline
 
Join Date: Nov 2018
Location: Peachtree City, GA
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I'm usually flying solo well below max gross weight, I'm at 180 lbs, I've had passengers weighing up to 250 lbs and full fuel, assuming my airplane weighs in at 750 I'm still under gross weight, that's 28 lbs more than what my placard says (722)...the seats don't move fore and aft and luggage is limited to 50lbs ...there is little danger of exceeding the CG limits, I'm just asking others to tell me what their empty CG is as a comparison, I've owned a 4 place aircraft before and have had to calculate W&B for passengers and fuel...the likely hood of exceeding the CG limits in a RV12 would be highly unusual the way I fly...
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  #5  
Old 12-29-2021, 10:10 AM
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Mel Mel is offline
 
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Location: Dallas area
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PLEASE, get your airplane reweighed and perform proper W&B calculations. In case of an accident, neither the investigator nor the insurance company is going to accept "the likely hood of exceeding the CG limits in a RV12 would be highly unusual the way I fly..."!

Not to mention that your airplane is not legal without this up-to-date information onboard the airplane.
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Mel Asberry, DAR since the last century. Over 1,000 certifications accomplished. Discount for Veterans, Law Enforcement, Fire Fighters.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>

Last edited by Mel : 12-29-2021 at 12:23 PM.
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  #6  
Old 12-29-2021, 10:11 AM
12vaitor 12vaitor is offline
 
Join Date: Aug 2012
Location: Panama City, FL
Posts: 223
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What is the point of your question? If you are happy with 750 lbs and do not want to weight your airplane to find out, go with it. Asking for comparable empty weights is irrelevant, the "sample loading chart" in the RV-12 POH uses 738 lbs which is just as good as guessing at 750 lbs. For reference, my RV-12 (EAB) has an empty weight of 863 lbs and does not seem to get any lighter every time I weight it.

John Salak
RV-12 N896HS
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  #7  
Old 12-29-2021, 11:16 AM
NinerBikes NinerBikes is offline
 
Join Date: Dec 2018
Location: Granada Hills
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My tail cone was primed, legacy RV-12, with one panel Skyview package, 472, GPS 2020, SL-40 AP, full interior, and full one color Navy blue paint job with wheel pants.

Actual weight... 772# Paint on the whole tail cone, along with primer back there too, generally shifts the CG slightly to the rear of the plane.

Friend has a 2016 build without AP, Skyview, 472, GTR200 ,with minimal paint in the form of a Z stripe, Western Airlines theme 1950s, wheel pants, full interior, 755#. Wheel pants are about 9.5 to 10 #.

It's all a guess, just take the time to weigh your plane and log it down, so you absolutely know for sure.

Top the tank off full and subtract 119# for fuel at 19.8 gallons.
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Last edited by NinerBikes : 12-29-2021 at 07:31 PM.
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  #8  
Old 12-29-2021, 12:16 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Location: Hubbard Oregon
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Quote:
Originally Posted by bobg56 View Post
I have a Legacy 2010 RV 12 the empty weight is listed as 722 lbs...I'm not the builder, I don't know if it was weighed before it was painted or not. It has the exterior/interior light kit, D-180, AP74 auto pilot, wheel pants, 2 blade prop, and is painted. I'm wondering if someone can tell me about how much weight paint adds and if 722# seems a bit low given what I have on it? I'm thinking 750 is probably the correct weight without having to go through the hassle of re-weighing it...what are your empty weights with similar equipment? Thanks...
As already mentioned, knowing the actual weight is only one of the reasons for doing the weight and balance calculation process.
Note that balance is the second (and possibly most important) part.

I can tell you with almost certainty (from a lot of experience with RV-12's) that your listed weight of 722 lbs is not correct. That is a very typical of an early D-180 equipped RV-12 Without lights, wheel pants, autopilot, or much paint.

It needs to be re-weighed and have a proper calculation for it's current empty C.G. done.
In fact, with you now knowing that, it technically isn't "In a condition for safe operation", since valid W&B data is required to be in the aircraft and available to the pilot for legal flight.
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Hubbard, Oregon
Van's Aircraft Engineering Prototype Shop
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RV-6A (aka "Junkyard Special ")
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  #9  
Old 12-29-2021, 12:39 PM
benburb benburb is offline
 
Join Date: Jun 2007
Location: Jacksonville, FL
Posts: 52
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Another very important point for ALL LEGACY RV12 owners re. W&B: check your balance when solo, full fuel, and 50# of baggage. I weigh 145#, and with that scenario, I am OUT OF BALANCE, just slightly tail heavy, on takeoff. And if you cheat on your 50# baggage...
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  #10  
Old 12-29-2021, 02:01 PM
BobTurner BobTurner is online now
 
Join Date: Dec 2011
Location: Livermore, CA
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Many local EAA chapters have scales you can borrow, or rent for a small fee. The procedure is not difficult.
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