VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 04-21-2019, 06:09 PM
Jyuma Jyuma is offline
 
Join Date: Dec 2018
Location: Dix Hills
Posts: 37
Default Re-rivet control horn bracket

I was checking over my work on the empennage when much to my horror I discovered that I used the wrong rivets to attach the WD-01207-1 & the WD-01208-1 to the HS-01233 Brackets. I used POP rivets LP4-3 instead of AN470AD4-6.

If I could post pictures here I'd show you what I had to do to replace those rivets. Not only could I not get a drill in there to drill out the pop rivets, there was no way for me to get any of my hand squeezers in there to squeeze the AN470AD4-6 rivets.

Long story short... after fighting for an hour to get the pop rivets out, I stood the rear stabilator up on it's end so it was sticking 8 feet straight up and then I balanced my floor pneumatic squeezer on one of those 12" high foot stools Harbor freight sells... and then with the 9" throat on my floor squeezer I was able to squeeze the AN470AD4-6 rivets home. It actually worked out great, but would not have been necessary in the first place if I didn't use the wrong rivet to begin with.

Lesson learned... double and triple check everything you think you know well about what the plans are telling you to do.

Last edited by Jyuma : Yesterday at 02:22 PM.
Reply With Quote
  #2  
Old 04-21-2019, 08:49 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,434
Default

If it’s true confession time I admit an acquired skill at removing the wrong rivet!😜
Reply With Quote
  #3  
Old Yesterday, 02:33 PM
Jyuma Jyuma is offline
 
Join Date: Dec 2018
Location: Dix Hills
Posts: 37
Default

Quote:
Originally Posted by RFSchaller View Post
If it’s true confession time I admit an acquired skill at removing the wrong rivet!😜
Good one.

But now it's confession time again, and this time I'm afraid I might not be quite as lucky.

I sent the following email to Vans support but I haven't received a response yet...

On page 9is/U-04 of the empennage kit, Figure 2 shows riveting the WD-1222 to the HS-01203-1 using AN470AD4-5 rivets. I somehow missed that note and used the LP4-3 blind rivets instead.

The entire stabilator is complete and I have no way of changing those rivets with the correct ones short of completely disassembling the stabilator.

Please tell me it’s ok as is or there is a corrective action that doesn’t require disassembly of the entire stabilator.
Reply With Quote
  #4  
Old Yesterday, 03:23 PM
rcarsey rcarsey is offline
 
Join Date: Jul 2012
Location: North Brunswick, NJ
Posts: 76
Default

Ouch. (drawing below so everyone understands). Best case is that Van's MAY ok drilling out the LP4-5 and have you use CherryMax CR3213-4-xxx -- which may be 4-2 (grip range .063-.125) or 4-3 (grip range .126 - .187) instead of the AD4-5's (grip range .114 - .134) .. I'm not sure of the actual material thickness there.

I'd move on to the next section while you wait to hear from the mothership.

Reply With Quote
  #5  
Old Yesterday, 04:21 PM
Jyuma Jyuma is offline
 
Join Date: Dec 2018
Location: Dix Hills
Posts: 37
Default

Quote:
Originally Posted by rcarsey View Post
Ouch. (drawing below so everyone understands). Best case is that Van's MAY ok drilling out the LP4-5 and have you use CherryMax CR3213-4-xxx -- which may be 4-2 (grip range .063-.125) or 4-3 (grip range .126 - .187) instead of the AD4-5's (grip range .114 - .134) .. I'm not sure of the actual material thickness there.

I'd move on to the next section while you wait to hear from the mothership.

Thanks you your input... it is greatly appreciated.

There is no next section for me to go on with... I've completed the empennage kit, I even have the fiberglass work on the rudder and Vertical stabilizer done.

I was just rechecking my work after seeing some of the notices about cracks in the stabilator hinge brackets when I noticed some of the pictures in the RV-12 Builders Blog showed a picture of the section in question and I noticed my rivets were different. I have no idea how I missed something so obvious. Brain fade is my only excuse.

I'm hoping the fact that the counter balance tube goes thru both WD-1222 counter balance brackets and then the tube gets secured to the brackets with two 3/16ths AN bolts and nuts. In other words, the brackets that hold the counter balance tube can't go anyplace once the counter balance tube is inserted without first shearing off 24 blind rivets (12 on each bracket). I would think that's near impossible but I won't let it go unless the mother ship says it's OK or gives me a workaround. I'd really hate to have to drill out about 1000 rivets.
Reply With Quote
  #6  
Old Yesterday, 05:16 PM
Bob Y Bob Y is offline
 
Join Date: Jul 2017
Location: Piedmont, SC
Posts: 52
Default

Per page 17-3 of the RV-12 Maintenance Manual “Cherry Max CR series rivets may be substituted for any AN470AD rivet or LP4 rivet.”. Looks like the best approved path forward.
Reply With Quote
  #7  
Old Yesterday, 06:21 PM
Jyuma Jyuma is offline
 
Join Date: Dec 2018
Location: Dix Hills
Posts: 37
Default

Quote:
Originally Posted by Bob Y View Post
Per page 17-3 of the RV-12 Maintenance Manual “Cherry Max CR series rivets may be substituted for any AN470AD rivet or LP4 rivet.”. Looks like the best approved path forward.
Oh man... you just made my day.

Thank you.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:01 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.