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-   -   Trim tab mount (http://www.vansairforce.com/community/showthread.php?t=165808)

Stu Mclean 11-07-2018 03:27 AM

Trim tab mount
 
Hi all
Not the way I wanted put my first post up but I need some help
If have mis read the plans and riveted the wrong nut plates to the mount and now have the problem of trying to fix it so that the trim motor can mount flush
I donít think I can get the squeezer in there to dimple or to rivet so was wondering what options I may have
Any advice would be appreciated other than read the plans properly you dopey twit 😂
Regards
Stewy

azflyer21 11-07-2018 06:41 AM

Order a new part, should be very little money. This is one of the parts that would bother me if I made a cosmetic error.

Desert Rat 11-07-2018 06:51 AM

Not familiar with the 14, but can you get to the back side of that area with a wrench? If so, you could drill off the nut plates and just use locking nuts on the backside.

Tom Martin 11-07-2018 06:53 AM

Without a picture it is hard to comment. However, in the spirit of education, why not use some of the supplied practice bits of aluminum and make a new part. You have perfect templates, using the old parts, no loss other then a bit of time.

bkervaski 11-07-2018 07:23 AM

I got to build the actual trim tab 6 times ... you're in good company! :D

RV-14E 11-07-2018 10:04 AM

Quote:

Originally Posted by Stu Mclean (Post 1300858)
Hi all
Not the way I wanted put my first post up but I need some help
If have mis read the plans and riveted the wrong nut plates to the mount and now have the problem of trying to fix it so that the trim motor can mount flush
I don’t think I can get the squeezer in there to dimple or to rivet so was wondering what options I may have
Any advice would be appreciated other than read the plans properly you dopey twit ��
Regards
Stewy

Greetings.

Don't worry. You're not a dopey twit. Few play this game without making some awesome errors.

Can you provide a specific part number that you're referring to? That could help us give you specific thoughts.

If you're referring to E-01410 Trim Access Reinforcement Doubler (page 09-12), you can drill out the rivets holding the nutplates, dimple the holes per Step 2, then buck the rivets holding the K1100-06 nutplates.

Remember, to get into tight spaces, anything with sufficient mass can be used as a bucking bar. I once used the blade of a heavy screwdriver.

Tiny bucking bars like this 12.5 ounce tungsten one can be helpful. eBay is frequently awash with these things.



You can also drill a hole into a bucking bar to accept a squeezer die, like below. This can be helpful for setting rivets and creating a dimple. I used this approach a few times during the build. Double bonus: The hole in the bar can also be used over the shop head of a rivet you're trying to remove when lightly tapping it out from the other side.



To give you more ideas, here's an approach I used on the rudder to dimple the aft-most holes on the R-00918 Attach Strips. It's a male dimple die, a washer, a "close quarters female die" and strategically ground-down no-hole yoke (with a little tape to keep it all in place).




Stu Mclean 11-07-2018 01:37 PM

Thanks for the replies
Sorry I forgot to post a photo of the problem but cant work out how to do it quickly before heading to work
Main problem is that there is no dimple and wrong nutplate
Will post picture tonight but modifying some tools might be the go as a new part wont solve the problem of opening up the elevator etc to get to it the conventional way
Regards
Stewy

Mike S 11-07-2018 02:24 PM

Welcome to VAF
 
Stu, welcome to VAF:D


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