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  #1  
Old 01-12-2019, 06:46 PM
RonS RonS is offline
 
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Default Too many dimples in F-01412A Bulkhead?

The plans page 10-07 step 1 called for dimpling the #30 holes in the web of the bulkhead except as indicated in the figure. There are two holes that I don't think should have been dimpled though. In the picture you can see the two dimples behind the edges of the tie-down bracket that is keeping it from laying flush to the bulkhead. Anyone else run into this? Can I just flatten those dimples out?

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Old 01-12-2019, 06:54 PM
mturnerb mturnerb is offline
 
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I think I ended up "undimpling" those holes.....

I use a hand squeezer with two flat dies - don't recall if I called Vans on this one though. It's been more than two years
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  #3  
Old 01-13-2019, 05:31 AM
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mulde35d mulde35d is offline
 
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Default Dimples

Those two holes must be dimpled since you must have the flat portion on the backside in order to place the vertical stabilizer flat against this portion of the aft fuselage during assembly.

The solution is to mark the interference point on the tie-down and grind away the metal on the tie down bracket to allow for the dimpled skin. Just FYI, I am not the creator of this fix. Other threads have previously been posted on this topic with the solution.

Also, make sure you grind away enough metal to fit a flat squeezer edge in to squeeze the working end of the rivet

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Last edited by mulde35d : 01-13-2019 at 05:53 AM.
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Old 01-13-2019, 07:50 AM
Tom023 Tom023 is offline
 
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For the -A model nothing goes in the two holes in question. Page 10-6 figure 2 Rev 1 shows them to remain undimpled. Perhaps a few years back Rev 0 did not show the exclusion for these two holes, I wii check my plan notes in the hangar as I know I dimpled and then flattened them back flush.
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Last edited by Tom023 : 01-13-2019 at 08:07 AM.
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  #5  
Old 01-13-2019, 08:37 AM
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mulde35d mulde35d is offline
 
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Default Page mix up

I think you are mixing up the aircraft types with page numbers. The tail dragger (RV-14) is on page 10-06. The tri-gear (RV-14A) is on page 10-07. On page 10-08 figure 1 it clearly shows placing an AN426 rivet in those two holes for the tri-gear, which appears to be what Ron is building based upon his signature.
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Old 01-13-2019, 09:53 AM
RonS RonS is offline
 
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Thanks for the responses, guys.

If you look at 10-08, there are no rivets called out for those two holes. I can't find anything further into the plans that calls for anything to go in those holes. So, I'm not sure I need to modify the tie-down bracket. Instead i'll likely "un-dimple" them as Turner suggests. I shot an email to Van's support. I'll let you know what they say.



Personally, I believe that this is an oversight in the plans but we'll see what Van's says. My page 10-07 is Rev 1. I just got my kit from Van's this past November (2018). So I'd be surprised if they didn't provide the latest rev.

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Old 01-13-2019, 10:06 AM
Tom Martin Tom Martin is offline
 
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The really shocking thing is that the tie down bracket is where the tail spring mount is supposed to go.........
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Old 01-13-2019, 10:24 AM
RonS RonS is offline
 
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What's a tail spring? ;-)

Actually... looking forward in the plans, these holes appear to get drilled out for AN6 bolts in the tail dragger version on Page 10-28. See Fig 2.
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  #9  
Old 01-13-2019, 10:44 AM
Tom023 Tom023 is offline
 
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Quote:
Originally Posted by mulde35d View Post
I think you are mixing up the aircraft types with page numbers. The tail dragger (RV-14) is on page 10-06. The tri-gear (RV-14A) is on page 10-07. On page 10-08 figure 1 it clearly shows placing an AN426 rivet in those two holes for the tri-gear, which appears to be what Ron is building based upon his signature.
Yes you are correct the A model is page 7. That must be why I dimpled them. However page 8 clearly shows no rivets go in those holes in either version.
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Last edited by Tom023 : 01-13-2019 at 11:00 AM.
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  #10  
Old 01-13-2019, 11:01 AM
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mulde35d mulde35d is offline
 
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Quote:
Originally Posted by Tom023 View Post
Yes you are correct the A model is page 7. That must be why I dimpled them. However page 8 clearly shows no rivets go in those holes in either version.
Your right I misread it. Ah well, I put two rivets in them anyways.
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