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Empty weight

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notsew_evets(at)frontiern
Guest

Posted: Thu Apr 24, 2008 1:15 pm Post subject: Empty weight

I have not calculated my empty weight on my XL yet  but would like to ask you finished builders what can I expect...

 I have a Jabiru 3300A, painted airframe, wheel  pants and basic steam gauges....

  

 If my numbers allow, I ll be calling BRS.   They want $4K for the 601 XL system but geeze,  I just spent $240 per night  in Las Vegas.  Twenty nights stay ,  My life is worth lots more than  those....

  

 Steve W.

    [quote][b]

craig(at)craigandjean.com
Guest

Posted: Thu Apr 24, 2008 1:53 pm Post subject: Empty weight

With the XL and the BRS it isn’t so much the weight that gets you as the W&B. Play with the W&B spreadsheet at the link below and you will see what I mean. I believe the numbers in the spreadsheet come from Gary Ray’s Corvair-powered XL so it may be heavier and have a more forward CG than a Jabiru-powered XL. Also it includes 25 pounds of “caudal” (tail) ballast in cell C8 that you could remove. But you can still see the effects of sticking 25-30 pounds in the middle of the luggage deck. If you could place the canister at the CG it would be a different story. I believe that CZAW placed the canister between the firewall and panel when they placed a chute in an XL (Evektor does the same thing) but I don’t know how it squeezed past the canopy. I have yet to see photos of an installation that uses the new triangular upper motor mounts.  

   

http://www.ch601.org/resources/W&B/ZodiacXLWBFinal.xls  

   

Also a search the archives for “WB-601XL.xls” should locate a message from “David X” and a link to his XL/Rotax W&B spreadsheet:  

   

http://forums.matronics.com/download.php?id=1876&sid=0c429a4e9894d63fb897b80fe91763bd  

   

See Scott Laughlin’s site for detailed photos of installing a BRS in an XL. But Scott has never published his W&B numbers:  

   

http://www.cooknwithgas.com/BRS.html  

   

-- Craig  

       

From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of steve

 Sent: Thursday, April 24, 2008 3:10 PM

 To: zenith-list(at)matronics.com

 Subject: Empty weight  

  

  

     

I have not calculated my empty weight on my XL yet but would like to ask you finished builders what can I expect...  

    

I have a Jabiru 3300A, painted airframe, wheel pants and basic steam gauges....  

    

   

    

If my numbers allow, I ll be calling BRS.  They want $4K for the 601 XL system but geeze,  I just spent $240 per night in Las Vegas.  Twenty nights stay ,  My life is worth lots more than those....  

    

   

    

Steve W.  

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craig(at)craigandjean.com
Guest

Posted: Thu Apr 24, 2008 3:10 pm Post subject: Empty weight

Low reading bathrooms scales! Can I have them?



-- Craig



Do not archive



--

davgray(at)sbcglobal.net
Guest

Posted: Thu Apr 24, 2008 3:59 pm Post subject: Empty weight

Spreadsheet Users:

  

 Everybody that uses the Spreadsheet should save a  copy to their own computer and modify the data on the 'data' page to reflect the  actual weights and arms of your aircraft.

  

   The second page also allows whatif data to  be entered for partially completed aircraft.  Here you would weight your  unfinished aircraft and put your best guess weights & arms into the red  lettered 'Projected Weights & Arms' section for the items that remain to be  completed.

  

   On the front page I had an entry called  'caudal ballast' that refers to a 25 lb sandbag that I used during my intial  test flights to put the CG in the middle of the envelope.  The bag was  secured to the rear of the baggage compartment as far back as possible.   You will not likely need to carry this kind of weight and this can be zeroed  out.  I should have left out that feature prior to posting the W&B  calculator.  At any rate it is very easy to reconfigure for a perfect match  to your own aircraft.

  

 One more point: credit is due Lincoln Probst who added the code and idea to compute W&B  at several points during a flight and plot each result on the same graph,  thereby giving minimum and maximum information all on one page.   Before this, I was printing out a page for each calculation point.

  

 Gary Ray -- 601XL  70.5 hrTT,  WW  Corvair Engine 

 davgray(at)sbcglobal.net (davgray(at)sbcglobal.net)

  

 [quote]   ---

jmaynard

Joined: 27 Feb 2008
Posts: 394
Location: Fairmont, MN (FRM)

Posted: Thu Apr 24, 2008 5:05 pm Post subject: Empty weight

On Thu, Apr 24, 2008 at 03:25:11PM -0700, Sabrina wrote:

 	  Quote: 	
		   It is amazing that AMD reaches 770 or the Rotax listed comes in at 734.


	


That 770 is for a basic day VFR aircraft. I expect my XLi to come in around

820 or so, pretty well loaded, but with no BRS chute (which adds another 40

pounds, they tell me).

-- 

Jay Maynard, K5ZC                   http://www.conmicro.com

http://jmaynard.livejournal.com      http://www.tronguy.net

Fairmont, MN (FRM)                        (Yes, that's me!)

AMD Zodiac CH601XLi N55ZC (ordered 17 March, delivery 2 June)

_________________
Jay Maynard, K5ZC
AMD Zodiac XLi N55ZC

notsew_evets(at)frontiern
Guest

Posted: Thu Apr 24, 2008 5:08 pm Post subject: Empty weight

Thats bad news for me..  If my 601 XL comes in at 800# the BRS is out.....



SW

---

tonyplane(at)bellsouth.ne
Guest

Posted: Fri Apr 25, 2008 8:21 am Post subject: Empty weight

Sabrina,

Wow! 860 lbs empty.



 I thought I had one of the heaviest 601Xls at 799 lbs - zero fuel, which 

includes:

6x600 tires/brakes, 801 nose fork, dual brakes, dual sticks, landing lights, 

wing tip strobes, wing lockers, two aux tanks, and a pretty full panel.  My 

MT CG  is at 290 mm from leading edge datum which gives me a pretty good 

loading range.



I am suprised that the "bathroom" scales you used read 10% lower that 

"calibrated" scales.  I used three electronic scales (I suspect they use 

load cell/strain guages for weight measurement) procured at the Aerospace 

Ground Support section of  WalMart for my W&B..  I used a mass balance 

medical scale to check the readings of the procured scales between 210 lbs 

and 275 lbs and ALL readings were within ONE pound of one another.



Tony Graziano

Zodiac 601XL/Jab 3300; N493TG; 368 hrs of really fun flying; 736 landings 

including just this past week 6 landings (over the power lines and over and 

through the trees) and takeoffs (over the trees) from my pretty rough farm 

field 1500 ft strip (The reason I went with 6x600 tires).

-------------------

Time: 03:28:07 PM PST US

Subject: Re: Empty weight

From: "Sabrina" <chicago2paris(at)msn.com>

N5886Q's empty weight is 860 which includes 4 gallons unusable fuel.  With 

full

fuel, it can carry 340 pounds (My mom, dad, headsets and maps, no luggage.)



N42845's sheet shows it can carry 339 pounds with full fuel.



It is amazing that AMD reaches 770 or the Rotax listed comes in at 734.



My aircraft weighed in in the high 7s with 3 bathroom scales, but 10% more 

with

scales calibrated for the range of weights actually applied to them. 

(200-400

vs. 0-200)

chuck_maggart

Joined: 20 Mar 2007
Posts: 16
Location: St. Louis

Posted: Fri Apr 25, 2008 11:18 am Post subject: Empty weight

Steve, my XL, 2974Z, weighed in at 749 lb. with a J3300  engine, wood prop, no wheel pants, portable GPS and fire extinguisher.  The  CG came out at 13.15 inches behind the L.E. datum.  I'll have to be careful  with heavy pilots and low fuel.  The plane was weighed with high quality  automotive digital scales that our EAA chapter 32 has.

  

 Chuck M.

 ready for FAA inspection

   [quote][b]

_________________
Chuck Maggart

cookwithgas

Joined: 06 Nov 2007
Posts: 159

Posted: Fri Apr 25, 2008 11:39 am Post subject: Re: Empty weight

Steve:



Don't over-analyze the BRS.  You should probably just buy one and put it in.  It is less than 20 lbs in the baggage area and the other weight is spread out toward the front.  See this picture of my NASA calibrated bathroom scale:



http://www.cooknwithgas.com/10_28_06_BRS_Weight.JPG



My airplane weighs around 860 with the BRS installed.  W&B works out just fine with the BRS and it flies and stalls with easy handling.   I didn't have to put any ballast in the tail. My battery is on the firewall.  More details at:



http://www.cooknwithgas.com/BRS.html



Scott Laughlin

Omaha, Nebraska

601XL/Corvair

Finished & Flying

amyvega2005(at)earthlink.
Guest

Posted: Fri Apr 25, 2008 12:38 pm Post subject: Empty weight

depaending on the crap you choose to put in your Steed, I see them coming in at approximately 700 to 770 Lbs.  Anything over 800 lbs, makes for a tough sell at resale time.



Juan



--

notsew_evets(at)frontiern
Guest

Posted: Fri Apr 25, 2008 12:56 pm Post subject: Empty weight

Thanks Chuck and others.  The 749 would be  doable for my flying ..

  

  

 [quote]   ---

KC7HFA

Joined: 05 Jul 2007
Posts: 11
Location: Southern Oregon

Posted: Wed Apr 30, 2008 6:42 am Post subject: Re: Empty weight

N601ZX came in at 744.  Dynon D180 & D100, A-200 radio, and Garmin transponder, ELT, wing lockers, landing lights, Nav/strobes, Jabiru 3300 with Ground adj prop, paint, upholstery and ready to fly, except 0 gal fuel in 15 gal tanks.  I had Pacific Aviation weigh it on calibrated scales.



Ron

_________________
Ron Asbill
N601ZX - CH-601 XL
Jabiru 3300
Completed and Flying!~ 150 Plus hours

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