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  #11  
Old 01-15-2011, 05:16 PM
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hydroguy2 hydroguy2 is offline
 
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That is a strange deal. you're 35# heavier than mine and 70% of that weight is on the tail.
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  #12  
Old 01-15-2011, 05:19 PM
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I suspect something amiss on the scales....
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  #13  
Old 01-15-2011, 05:21 PM
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Quote:
Originally Posted by Brantel View Post
I suspect something amiss on the scales....
That'd be the thing I check
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  #14  
Old 01-15-2011, 05:26 PM
PCHunt PCHunt is offline
 
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Default Tare

You're not inadvertently weighing the blocks holding the tail up, by any chance? Zero the scale after adding the blocks.

Just thinkin' out loud.................. Not that I would ever do anything like that. Or mismeasure by exactly 10".............
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  #15  
Old 01-15-2011, 06:56 PM
float208 float208 is offline
 
Join Date: Mar 2005
Location: Chandler, Arizona
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Default tail heavy

OK, So I set it up and weighed it again... perfect 0.0 level, the tailwheel is the only thing on the aft scale on top of a benchT tried different scale (bathroom target scale) and also read 92# on it... I even weighed myself on each scale to see the same correct number show up each time... The only thing I can think of is for some reason something is different placing the wheels farther forward than normal or something that would change the measuring points. If the main wheels were just a couple inches aft it would have a big difference in the weight distribution... Is there any way I have gear legs or an engine mount that would change this... I guess in the morning I am going to have to start dropping plumb lines and find the actual datum and where the wheels fall into all this mess. 20# is a huge difference. My RV-8 was 56# on the tail. For me to offset this I would have to add #45 or so to the spinner.... Anyhow thoughts again???
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  #16  
Old 01-15-2011, 07:34 PM
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have you recently lost your dog?

but yes next step is get some measurements.
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  #17  
Old 01-15-2011, 08:03 PM
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Bad Sheila Bad Sheila is offline
 
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Default Where is Dan C's website?

I'm having problems with my RV6 CG and someone mentioned Dan C's web-site for examples. Can anyone tell me who he is and where his website is?

Thanks
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  #18  
Old 01-15-2011, 08:07 PM
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DakotaHawk DakotaHawk is offline
 
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Dan C's website was taken down by Dan about two years ago.
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  #19  
Old 01-15-2011, 08:10 PM
float208 float208 is offline
 
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Default **** heavy tail

OK, so I can't leave things alone... Went out and we leveled the plane again, droped lines measured Datums, and the wheels are right where they should be for doing the weight and balance. Everything seems to be where it should be... I am flustered because I have finished 3 RV's and never have I seen a tail this heavy...
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  #20  
Old 01-15-2011, 08:21 PM
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DakotaHawk DakotaHawk is offline
 
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I have a W & B spreadsheet already set up for the RV-7 (includes arm distances based on Van's specs). It gives a picture/graph to show if your weight/balance is ok for Normal/Utility/Aerobatic category of flight at take-off and landing weight. You should be able to plug in weights for each wheel and get correct results - as long as your wheels are all where they belong!

Send me your email if you want the file.

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RV-7 N957RV (First Flight on Dec 18, 2009)
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#866 on the Van's RV-7 hobbs
#6563 on Van's generic hobbs
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