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Balancing the Elevators - Ans from Vans

 
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vhimsl(at)roadrunner.com
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PostPosted: Thu May 29, 2008 6:44 am    Post subject: Balancing the Elevators - Ans from Vans Reply with quote

Received this from Van’s

The elevators should be balanced individually - disconnect them from the
pushrod and each other. The lead weight will probably be too heavy and you
will need to remove some of it. However, if you have not painted the
elevators leave the weight about 2-3 oz too heavy so they will balance
when
painted. It is better for the lead weight to be too heavy than too light,
but it is
not critical.

vans

Thanks to all
Vince H.
RV-8 Glacier Built
Moscow, ID

From: owner-rv8-list-server(at)matronics.com [mailto:owner-rv8-list-server(at)matronics.com] On Behalf Of manuel weber
Sent: Wednesday, May 28, 2008 2:57 PM
To: rv8-list(at)matronics.com
Subject: RE: Balancing the Elevators


I am assuming, since i could not find the balance criteria in the plans, that the balance values are "zero" for all surfaces?



Is this correct?



Is it safe to fly the aircraft with some positive balance (trailing edge up for paint compensation) ?

Carl Froehlich <carl.froehlich(at)cox.net> wrote:
[quote]
I did each separately as it was just as easy as doing it connected.



Recommend leaving enough weight on to have the elevator trailing edge up. You will need this to compensate for paint (not an insignificant weight change as it is all aft of the hinge point). I ended up adding weight back after painting – and then fixing the paint job where I cut into the elevator fairing.



Carl Froehlich

RV-8A (425 hrs)

RV-10 (flaps)



From: owner-rv8-list-server(at)matronics.com [mailto:owner-rv8-list-server(at)matronics.com] On Behalf Of Vince-Himsl
Sent: Tuesday, May 27, 2008 7:10 PM
To: rv8-list(at)matronics.com
Subject: Balancing the Elevators





Hello,



Does one balance each Horizontal Stabilizer section separately (trim the lead weights) or as a completed unit connected to the push rods and control column.



Thanks,



Vince H.

RV-8 (Glacier built) – Registered and in hanger for final assembly.




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prtrotter



Joined: 19 Jan 2007
Posts: 14

PostPosted: Thu May 29, 2008 8:48 am    Post subject: Balancing the Elevators - Ans from Vans Reply with quote

Interesting C when I asked Vans the same question they said not to bother balancing them seperately C just do them together E I guess it depends on who you talk to there E
6nbsp;
Paul
6nbsp;


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flyinwithme99(at)yahoo.co
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PostPosted: Fri May 30, 2008 8:19 am    Post subject: Balancing the Elevators - Ans from Vans Reply with quote

Balancing the surfaces individually is the industry standard and makes some sense as far as physics is concerned....

The dynamics involved, and I only understand it on a very limited level, can be affected if you balance the surfaces as an assembly. ie, if one is way under balance and you compensate by adding weight to the other surface.

My opinion is to balance separately.

ptrotter(at)optonline.net wrote:
[quote] Interesting, when I asked Vans the same question they said not to bother balancing them seperately, just do them together. I guess it depends on who you talk to there.

Paul



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