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  #1  
Old 11-04-2017, 07:28 PM
mfleming's Avatar
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 76
Wink Another Hole in The Rib Question

I want to drill another hole in my main wing ribs.

This topic has been covered before but I am still confused if this is OK

I've read most of the threads about this and even talked to Van's about six months ago when I originally added some conduit holes. Van's led me to believe that there could be more holes drilled than their guidelines spelled out.

I came across an adventures in aviation video that does exactly what I would like to do. The adventures in aviation people seem pretty squared away.

I would like to get the warm and fuzzies before I drill the ribs.

Here's a photo of what I'm proposing:

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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
Donated 2017
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  #2  
Old 11-04-2017, 08:15 PM
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johnbright johnbright is offline
 
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Default no worries

IMO definitely not a problem.
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  #3  
Old 11-04-2017, 08:18 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Extra hole

I did.
If you run plumbing through those holes, be aware they will be passing the bellcrank.
I made a bracket to keep the plumbing centered under the bellcrank. You also need a plan to enter the fuse as the lines will be near the control rod. Just my $.02
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/01/2016. 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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  #4  
Old 11-04-2017, 09:45 PM
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mfleming mfleming is offline
 
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Location: Joseph, Oregon
Posts: 76
Default

Quote:
Originally Posted by johnbright View Post
IMO definitely not a problem.
Thanks!

Quote:
Originally Posted by wirejock View Post
I did.
If you run plumbing through those holes, be aware they will be passing the bellcrank.
I made a bracket to keep the plumbing centered under the bellcrank. You also need a plan to enter the fuse as the lines will be near the control rod. Just my $.02
Good information.

No worries on the bellcrank, as all the pitot, AoA lines and the pitot wires stop just before the the bell crank bay (that's were the heated pitot is).

Haven't made the control rod yet, so I didn't think about interference at the wing root.

Have any ideas on avoiding the conflict?
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
Donated 2017
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  #5  
Old 11-04-2017, 10:02 PM
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jcarne jcarne is offline
 
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Location: Worland, Wyoming
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Default

It is my understanding that there used to be another tooling hole in the ribs which is why some builders blogs have three holes. Below I attached a link to Mike Bullocks blog, it looks to me that there were three holes from the factory, mine only came with two.

http://www.rvplane.com/?categoryid=3&dayid=178

Maybe Mike or Scott will chime in and tell me if this is in fact true. (oh and thanks Mike for having such an awesome builders log!)



I only drilled the two existing holes on my ribs as many people just put a hole in the plastic conduit (and put in some kind of rubber bushing) if a wire needs to exit mid run. This is what I plan to do, but I thought real long and hard about adding the third hole like you are asking.
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  #6  
Old 11-04-2017, 10:12 PM
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mfleming mfleming is offline
 
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Location: Joseph, Oregon
Posts: 76
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Quote:
Originally Posted by jcarne View Post
It is my understanding that there used to be another tooling hole in the ribs which is why some builders blogs have three holes. Below I attached a link to Mike Bullocks blog, it looks to me that there were three holes from the factory, mine only came with two.

http://www.rvplane.com/?categoryid=3&dayid=178

Maybe Mike or Scott will chime in and tell me if this is in fact true. (oh and thanks Mike for having such an awesome builders log!)



I only drilled the two existing holes on my ribs as many people just put a hole in the plastic conduit (and put in some kind of rubber bushing) if a wire needs to exit mid run. This is what I plan to do, but I thought real long and hard about adding the third hole like you are asking.
Thanks for that link...and, as you said, thanks to Mike B. for a great log.

Now it all makes sense...
I had seen unaltered ribs with the third tooling hole but mine only has two and that was confusing. I think that come Monday, I'll call Vans about this third hole. I can't imagine that if the ribs used to have three tooling holes that adding one more to my ribs will hurt anything.
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
Donated 2017
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  #7  
Old 11-04-2017, 10:50 PM
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jcarne jcarne is offline
 
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Location: Worland, Wyoming
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Default

Quote:
Originally Posted by mfleming View Post
Thanks for that link...and, as you said, thanks to Mike B. for a great log.

Now it all makes sense...
I had seen unaltered ribs with the third tooling hole but mine only has two and that was confusing. I think that come Monday, I'll call Vans about this third hole. I can't imagine that if the ribs used to have three tooling holes that adding one more to my ribs will hurt anything.
Ya that is what I think as well (same rib design and thickness I'm assuming). Let us know what Van's says as I'm sure we aren't the only ones to ponder this.
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  #8  
Old 11-05-2017, 10:20 AM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Plumbing conflict

Quote:
Originally Posted by mfleming View Post
...
Have any ideas on avoiding the conflict?
If you uze SafeAir plumbing, turn them 90 degrees after exiting the wing root and enter the fuse aft of the control rod. Or make a bracket of some sort to keep them from interfering. Lots of options.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/01/2016. 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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  #9  
Old 11-05-2017, 10:45 AM
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mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 76
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Quote:
Originally Posted by wirejock View Post
If you uze SafeAir plumbing, turn them 90 degrees after exiting the wing root and enter the fuse aft of the control rod. Or make a bracket of some sort to keep them from interfering. Lots of options.
Thanks for the tips Larry.

SafeAir seems to be out of business so I'm using the Dynon Pitot kit.

Im sure that once I have the control rod and the pitot tubing and wiring in place the conflicts will be much clearer.
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
Donated 2017
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  #10  
Old 11-05-2017, 10:48 AM
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mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 76
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Quote:
Originally Posted by jcarne View Post
Ya that is what I think as well (same rib design and thickness I'm assuming). Let us know what Van's says as I'm sure we aren't the only ones to ponder this.
Just sent a email to Van's support with the photo from the first post.

I'll give Van's a call Monday morning and see what they say and report back here.

-M
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
Donated 2017
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