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  #1  
Old 08-18-2018, 01:21 PM
iamtheari iamtheari is offline
 
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Default Page 28-07 step 4 and figure 2 - wrong nutplates?

Page 28-07 step 3 is to machine countersink the #40 holes in the F-14133-1 cowl attach plates. Figure 2 shows 14X machine countersink. There are only 14 #40 holes in this part, including the nutplate mounting holes.

Step 4 is to rivet the nutplates onto F-14133-1. But figure 2 calls for K1000-08D nutplates, which are dimpled and thus won't sit flat on top of the F-14133-1 which is countersunk on the opposite side.

Should these nutplates be K1000-08?
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  #2  
Old 08-18-2018, 01:44 PM
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You are right.... I checked my build log but there is nothing mentioned about this. My guess is that I used K1000-08D without giving it a second thought...

Pretty sure either nutplate will work fine. I had no problem fitting the bottom cowl.
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  #3  
Old 08-18-2018, 02:48 PM
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RV-14E RV-14E is offline
 
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You've identified an error in the plans. The history of this error is as follows.

The original 0.04" F-14133 parts were thinner. Van's found that it was prone to cracking. So a thicker 0.063" part, F-14133-1 (hence the -1) was provided around Nov-15 to builders with the thinner parts. Subsequent kits shipped after this time were provisioned with the thicker parts.

The thinner F-14133 was thin enough to accept a dimple, hence the stale K1000-08D reference in the plans. The thicker F-14133-1 is too thick for a dimple.

Use K1000-08 for the countersunk F-14133-1.
Use K1000-08D for the dimpled F-14133.
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Last edited by RV-14E : 08-18-2018 at 02:57 PM.
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Old 08-18-2018, 05:15 PM
iamtheari iamtheari is offline
 
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Thanks for verifying my finding. I'll carry on accordingly. It's nice to know the history of these things, as well.
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  #5  
Old 08-18-2018, 08:41 PM
iamtheari iamtheari is offline
 
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Just by way of update, the kit at this point has 5 remaining K1000-08 nutplates and 6 are needed for this step. So I will just order a half-dozen along with probably $500 of other stuff from Aircraft Spruce. Happy building, everyone!
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  #6  
Old 08-21-2018, 09:02 PM
iamtheari iamtheari is offline
 
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Further update: The plans call for AN426AD3-4.5 rivets through the firewall lower flange, cowl shim, and cowl attach plate. We found these to be too short and used AD3-5 rivets instead.
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  #7  
Old 08-22-2018, 07:18 AM
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This is a common finding, note that I say finding and not error.
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