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  #11  
Old 07-31-2018, 03:06 PM
Simorg Simorg is offline
 
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Great reminder TankerPilot. Thank you for sharing. It's really nice to know that even Pilots with tons of hours can admit complacency or a just plain forgot after so many years the importance of remaining within W&B.

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  #12  
Old 07-31-2018, 05:14 PM
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catmandu catmandu is offline
 
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Absent a read of a thread like this, I bet one does the aft but legal CG thing one time and then comes up with the right solutions.

I also did the tool bag and tie downs in the center of the foot well trick this year to OSH (need to install some hooks and procure some elastic webbing to make it safer). Then, we flew up high on the return, so it was "Honey, is that an O2 bottle between your legs, or are you just happy to see me?"
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  #13  
Old 07-31-2018, 05:27 PM
RandyAB RandyAB is offline
 
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This is a great thread. Thanks for sharing.

With respect to fuel burn, it is my understand that all weight added to the RV10 at least (I'm not sure of the others) moves CG aft. Burning fuel in that case should move the CG forward n'est pas? If starting close to aft limits then fuel burn should not pose a problem unless of course one burned enough to bring CG past the forward limit (I don't even know if this is possible with the 10 at least).
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  #14  
Old 07-31-2018, 05:37 PM
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Flying again! Flying again! is offline
 
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Quote:
Originally Posted by RandyAB View Post
This is a great thread. Thanks for sharing.

With respect to fuel burn, it is my understand that all weight added to the RV10 at least (I'm not sure of the others) moves CG aft. Burning fuel in that case should move the CG forward n'est pas? If starting close to aft limits then fuel burn should not pose a problem unless of course one burned enough to bring CG past the forward limit (I don't even know if this is possible with the 10 at least).
RV-10 CG moves Aft as fuel is burned. Until I put a lighter battery in back, with my family and 100 lbs of baggage, I was at aft CG limit at 25 gallons remaining.

With some changes I am fine all the way to zero fuel.

Just checked, burning all 60 gallons moves CG aft 1 inch
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Last edited by Flying again! : 07-31-2018 at 05:40 PM.
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  #15  
Old 07-31-2018, 05:49 PM
RandyAB RandyAB is offline
 
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Quote:
Originally Posted by Flying again! View Post
RV-10 CG moves Aft as fuel is burned. Until I put a lighter battery in back, with my family and 100 lbs of baggage, I was at aft CG limit at 25 gallons remaining.

With some changes I am fine all the way to zero fuel.

Just checked, burning all 60 gallons moves CG aft 1 inch
Ok. I'm not trying to thread drift but fuel has a positive moment for the RV10. How can burning fuel move CG aft?
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  #16  
Old 07-31-2018, 05:52 PM
crabandy crabandy is offline
 
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I use the front floorboard quite often when hauling my kiddos, they donít need the foot room and makes staking and packing easier.
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  #17  
Old 07-31-2018, 05:55 PM
Kyle Boatright Kyle Boatright is offline
 
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Quote:
Originally Posted by RandyAB View Post
Ok. I'm not trying to thread drift but fuel has a positive moment for the RV10. How can burning fuel move CG aft?
Because the station where fuel is located is in the forward part of the CG envelope. (Fuel is barely aft of the forward CG limit). Remove weight there, the CG generally moves aft.

Here's a link to the W/B sheet for the -10.

http://www.vansaircraft.com/pdf/RV10wb.pdf
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  #18  
Old 07-31-2018, 06:05 PM
BobTurner BobTurner is offline
 
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Yep. With the 10 you must check LANDING CG, as well as takeoff.
Start with cg near aft limit, cg moves further aft as you burn gas. But start with cg near the forward limit, cg moves forward as you burn gas!
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  #19  
Old 07-31-2018, 06:07 PM
RandyAB RandyAB is offline
 
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Quote:
Originally Posted by Kyle Boatright View Post
Because the station where fuel is located is in the forward part of the CG envelope. (Fuel is barely aft of the forward CG limit). Remove weight there, the CG generally moves aft.

Here's a link to the W/B sheet for the -10.

http://www.vansaircraft.com/pdf/RV10wb.pdf
Thanks Kyle. My bad. I wasn't thinking of it in terms of reference to the empty CG.
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Last edited by RandyAB : 07-31-2018 at 06:10 PM.
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  #20  
Old 07-31-2018, 10:00 PM
USCANAM USCANAM is offline
 
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Jim
Interesting post. Informative and will probably save some lives in the future.

We have a 9A similarity equipped as your 7A, except for the oxygen. 180 hp IO-360 with MT 3 blade prop.
I believe our baggage compartments are similar in size. Our wings are different and we only hold 36 gallons of fuel.

Just returned from Oshkosh and took my first timer 13 year old grandson.
We camped in homebuilt camping.
One comment and a question.
Whenever I even suspect I might be aft heavy, I increase all my low speeds 10% (takeoff, landing, maneuvering, stall). This I learned from flying my aerobatic One Design cross country with a loaded baggage compartment. Even in that plane, not sure if I could recover from a tail heavy spin.

And unless youíre carrying some gold or other metals, how do you get 150 pounds of baggage in that small compartment?
I think we were around 80 pounds of camping stuff, spare clothes, little food and water, and body washing materials. Luggage compartment was full right up to the shoulder harness wires.
Will be interesting hearing your manifest.
Once again, great post.
Jack
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