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01-15-2011, 03:49 PM
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Join Date: Mar 2005
Location: Chandler, Arizona
Posts: 188
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Weight and Balance numbers??? RV-7
Would any of you RV-7 Drivers be willing to share what your aircraft weight is and who much of that is on the tailwheel, and last what kind of prop do you have... I am working on the weight and Balance and am finding the plane to be extreamly tail heavy 93# to be exact... This puts me way out on the CG.... in all but solo light on gas situations....
Thanks
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01-15-2011, 04:11 PM
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Join Date: Jan 2006
Posts: 934
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-7 Tail Weight
I ended up at 1128, 69.25 on the tail with the Hartzel BA c/s prop/ and an AeroSport XP-360 injected.
What did you get for your mains?
Last edited by Jim P : 01-15-2011 at 04:26 PM.
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01-15-2011, 04:17 PM
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Join Date: Oct 2008
Location: Arlington, WA
Posts: 799
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RV-7 W&B info
Here's my data...
Rt Main 483# @ 68.5"
Lt Main 501# @ 68.5"
TW 70# @ 248"
Empty Wt 1054
CG = 80.45
This is with an IO 360 with Hartzell C/S prop.
__________________
_______________________________
Scott "Grumpy" Stewart
RV-7 N957RV (First Flight on Dec 18, 2009 )
RV-14 N144P (Empennage complete, wings almost complete, fuselage almost complete)
#866 on the Van's RV-7 hobbs
#6563 on Van's generic hobbs
Arlington, WA
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01-15-2011, 04:24 PM
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Join Date: Mar 2005
Location: Chandler, Arizona
Posts: 188
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Weight
My Empty is 1130#. 93# on the tail, and about 518# on each main. I have a Whirlwind Prop which is light, but the Battery is on the firewall and eveything else is in normal locations, nothing but 1 small strobe powerpack in the tail. I cannot figure out why the tail is so heavy. My -8 was only 55# on the tail This is strange... If I add the wieght of a Hartzell on the front the tail still weighs 87# so a prop swap isn't going to do the trick either.
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01-15-2011, 04:28 PM
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Join Date: Sep 2006
Location: Townsend, Montana
Posts: 3,179
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Painted RV-7 w/ pants and fairings, IO-360, WW200RV prop w/2.25 spacer, James long cowl, plenum, seats and front carpet, light duty panel. ELT and Strobe pak behind Pax seat. oversize main tires(+5#)
Certified aviation scales.
right main 511# at 68.5"
left main 514# at 68.6"
tail wheel 70#
Total 1095# @ 80.2"c.g.
__________________
Retired Dam guy. Life is good.
Brian, N155BKsold but bought back.
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01-15-2011, 04:32 PM
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Join Date: Sep 2006
Location: Townsend, Montana
Posts: 3,179
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did you level everything? calibrated/certified scales?
__________________
Retired Dam guy. Life is good.
Brian, N155BKsold but bought back.
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01-15-2011, 04:34 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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RV7, O-360 ND with Hollow Crank, Dual Mags and Carb. Metal FP Sensenich Prop, battery on firewall, Minimal Flightline Interior, Dual Dynon EFIS/EMS, VFR only radio/GPS gear. Bell TW Fork, rest all Van's. No paint...
484 lbs right main
476.5 lbs left main
71 lbs TW
1031.5 total
80.89" empty CG (full of oil)
RV7's tend to be tail heavy (well not tail heavy but not on the fwd limit) empty. Wait till you see what this is going to do to your baggage limit! (Remember to run the numbers at minimal fuel)
Last edited by Brantel : 01-15-2011 at 04:41 PM.
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01-15-2011, 04:47 PM
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Join Date: Oct 2008
Location: Arlington, WA
Posts: 799
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Float208, are you leveling the plane prior to weighing it? The longerons at the cockpit must be level (fore - aft and side - side) prior to weighing anything.
If you're weighing the TW with the tail still on the ground, you're going to get a heavy weight! See Hydroguy's photo to see how the plane should look when you're weighing it. (You probably already know all of this, but someone else reading this thread may not know it yet...)
__________________
_______________________________
Scott "Grumpy" Stewart
RV-7 N957RV (First Flight on Dec 18, 2009 )
RV-14 N144P (Empennage complete, wings almost complete, fuselage almost complete)
#866 on the Van's RV-7 hobbs
#6563 on Van's generic hobbs
Arlington, WA
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01-15-2011, 04:58 PM
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Join Date: Mar 2005
Location: Chandler, Arizona
Posts: 188
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weight..
Weighed it level, just like in the photo. Just pulled the tail fairing off looking for hidden weights... nothing....
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01-15-2011, 05:15 PM
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Join Date: Jan 2005
Location: Ottawa, Canada
Posts: 2,357
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Was the canopy closed?
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