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  #11  
Old 08-15-2018, 07:36 AM
Mlidzct Mlidzct is offline
 
Join Date: Nov 2016
Location: Southington, Ct
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is it possible the HS was built with RV-7 spars and RV-8 skins/ribs? It looks like you have the RV-7 spar because its wide enough for the 7 fuselage, but the distance between fwd and aft spars does seem like its short based on eyeballing rivets in aft deck to rivets on HS
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  #12  
Old 08-15-2018, 07:48 AM
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Arie Arie is offline
 
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Quote:
Originally Posted by Mlidzct View Post
is it possible the HS was built with RV-7 spars and RV-8 skins/ribs? It looks like you have the RV-7 spar because its wide enough for the 7 fuselage, but the distance between fwd and aft spars does seem like its short based on eyeballing rivets in aft deck to rivets on HS
The RV7 and RV8 uses the same ribs and skins, so they are common to both models.
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  #13  
Old 08-15-2018, 07:49 AM
sf3543 sf3543 is offline
 
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Is that bulkhead installed with the flange oriented correctly?
Having it turned backwards could cause that
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  #14  
Old 08-15-2018, 08:02 AM
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Mark H Mark H is offline
 
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From the rivet locations it looks like the F-710B angle is not in the right place, but from the pictures I canít tell why or how thatís possible. Does there appear to be anything unusual about the F-710 rib? The pre-punched holes in the aft deck should be in the middle of the flange of F-710B. During assembly that angle is match drilled in place.
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  #15  
Old 08-15-2018, 08:26 AM
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Arie Arie is offline
 
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Quote:
Originally Posted by Mark H View Post
From the rivet locations it looks like the F-710B angle is not in the right place, but from the pictures I canít tell why or how thatís possible. Does there appear to be anything unusual about the F-710 rib? The pre-punched holes in the aft deck should be in the middle of the flange of F-710B. During assembly that angle is match drilled in place.
If you look at the plans the rivets on the aft deck is not in the middle of the F710B angle, it is more aft, towards the vertical flange of the F710B angle.
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  #16  
Old 08-15-2018, 08:31 AM
BillL BillL is offline
 
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Agree with others, it looks close actually and the aft pieces can move slightly. I might make an edge checker with a couple of strips of "scrap" to hit the lower cross bar and upper at the same time - a "U" shape if that visual translates. Then you can see where the fasteners will go. If a second tool is made flat, you could use it for hole location confirmation. It is always good to know where the hole ends up on the backside.
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  #17  
Old 08-15-2018, 09:03 AM
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wirejock wirejock is offline
 
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Everything looks correct and since it is prepunched, one would assume very close to correct.
Don't me offended but is it possible the line drawn on the aft deck is not the center of the angle brace underneath?
Occam's Razor. The simplest solution is usually the correct one.
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  #18  
Old 08-15-2018, 09:20 AM
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mfleming mfleming is offline
 
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Quote:
Originally Posted by Arie View Post
Check that the distance from the front of the HS rear spar to the back of the HS front spar is 12 and 3/16 inch. If it is then your HS is correct. I think check this first, and then double check that you have actually drawn those lines in the correct place. On mine the distance from your front line ( forward part of the angle (F710B) on the F710 bulkhead) to the centre of the first rivet on the aft deck in front of your line is 5/8 inch, measured parallel to the F710B angle.
Hope it all makes sense, and helps
Regards
Arie
I just check...it's exactly 12 3/16" although my plans show 12 9/32".
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  #19  
Old 08-15-2018, 09:21 AM
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mfleming mfleming is offline
 
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Quote:
Originally Posted by sf3543 View Post
Is that bulkhead installed with the flange oriented correctly?
Having it turned backwards could cause that
Yes, the F710 bulkhead to facing forward.
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Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Started 11/2016
Empennage completed 11/2016 (sans fiberglass)
Ailerons and flaps completed 3/2017.
Wings completed 12/2017 (sans fiberglass)
Started on QB fuselage 01/2018
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  #20  
Old 08-15-2018, 09:45 AM
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mfleming mfleming is offline
 
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Quote:
Originally Posted by Mark H View Post
From the rivet locations it looks like the F-710B angle is not in the right place, but from the pictures I canít tell why or how thatís possible. Does there appear to be anything unusual about the F-710 rib? The pre-punched holes in the aft deck should be in the middle of the flange of F-710B. During assembly that angle is match drilled in place.
Everything looks in OK except those four top rivets look too far aft.

Quote:
Originally Posted by Arie View Post
If you look at the plans the rivets on the aft deck is not in the middle of the F710B angle, it is more aft, towards the vertical flange of the F710B angle.
Yes, I agree the rivets seem too far aft. they are almost against the radius of the F-710B angle, you can see that on the interior photo of the F-710 bulkhead posted earlier...but there doesn't seem to be anything out of place on the F-710 bulkhead.

Quote:
Originally Posted by wirejock View Post
Everything looks correct and since it is prepunched, one would assume very close to correct.
Don't me offended but is it possible the line drawn on the aft deck is not the center of the angle brace underneath?
Occam's Razor. The simplest solution is usually the correct one.
No offense taken I was sure that it must be a error on my part when I first discovered this but I'm really baffled now.

Here's the way I determined the location of the F-710B angle.





All this is positioned by fixed predrilled parts. there must be some non -7 parts in the mix is all I can think of
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RV-7 Slider #74572
Started 11/2016
Empennage completed 11/2016 (sans fiberglass)
Ailerons and flaps completed 3/2017.
Wings completed 12/2017 (sans fiberglass)
Started on QB fuselage 01/2018
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