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  #1  
Old 06-10-2013, 03:25 PM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Elevator counterweight

I have another elevator question.
E-714 Elevator Counterweight
The right side plans show an area to cut away. The isometric view shows it removed.
The left isometric view show it uncut.
The book does not mention it till it talks about balancing and drilling small holes.
I've learned the plans are almost always right but in this case the two plans do not agree.
So should I cut or leave it and cut it later when balancing?
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Donated 12/01/2017. Plus a little extra.
RV-7A #73391, N511RV reserved (1,800+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
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  #2  
Old 06-10-2013, 03:54 PM
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larrynew larrynew is offline
 
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Only the right gets trimmed. DWG 5, E-714 Trim Detail says, "...Right Elevator Only!"
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  #3  
Old 06-10-2013, 05:13 PM
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Default

on mine I did not remove any, with paint and electric trim, I only had to drill a few holes in each one to balance it, with them tied together.
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  #4  
Old 06-10-2013, 06:13 PM
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Default DOH!

Quote:
Originally Posted by larrynew View Post
Only the right gets trimmed. DWG 5, E-714 Trim Detail says, "...Right Elevator Only!"
I must have read that 50 times and still missed the note. That makes sense. I was wondering if balance would be different between the two sides due to trim hardware.
Thanks Larry.
I think I will cut away the area shown.
I wonder what else I missed.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/01/2017. Plus a little extra.
RV-7A #73391, N511RV reserved (1,800+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #5  
Old 06-10-2013, 06:17 PM
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Default Electric trim

Quote:
Originally Posted by bret View Post
on mine I did not remove any, with paint and electric trim, I only had to drill a few holes in each one to balance it, with them tied together.
I'm using electric trim also. Hmmmm. Oh bother!
Maybe I should leave it as is. It can be cut away anytime.
Thanks Bret.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/01/2017. Plus a little extra.
RV-7A #73391, N511RV reserved (1,800+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #6  
Old 06-10-2013, 06:21 PM
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wirejock wirejock is offline
 
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Default Familiar

Quote:
Originally Posted by larrynew View Post
Only the right gets trimmed. DWG 5, E-714 Trim Detail says, "...Right Elevator Only!"
Larry, do we now each other?
I am from Austin.
Your last name seems familiar.
I worked 30 years for AISD.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/01/2017. Plus a little extra.
RV-7A #73391, N511RV reserved (1,800+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #7  
Old 06-11-2013, 09:02 AM
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cjhammes cjhammes is offline
 
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Default

Hi Larry-

7s and 8s tail sections are pretty similary, if not identical. I trimmed as indicated per my 8 plans (or so I thought) and later had to add weight. I too used electric trim and found more weight needed for proper balance. This may vary from one to another depending on how much RTV or proseal used on trailing elevator edge, process used for fiberglass tips, prime/no prime, etc. Suggest you don't trim any until all is complete and you are ready to balance. My 2 cents worth.
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  #8  
Old 06-11-2013, 09:07 AM
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Yip, RTV, paint, glass work, servo, all adds weight, you will need those counter weights.
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  #9  
Old 06-11-2013, 06:51 PM
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Default weight

Thanks Charlie and Bret.
I installed as is. I can always take away.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/01/2017. Plus a little extra.
RV-7A #73391, N511RV reserved (1,800+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #10  
Old 03-29-2017, 11:15 AM
RV7ForMe RV7ForMe is offline
 
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Location: Europe
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Default

hey Larry I know this thread is a few years old. but i am asking the same thing now. how did it turn out? was leaving it as is the right move?
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