VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-14
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 08-29-2016, 03:34 PM
MED MED is offline
 
Join Date: Jul 2015
Location: Aiken, SC
Posts: 620
Default

+1 on the 3/32" dimple vise grips. That is what I used in that spot. That, and the no hole yoke mentioned above.
Reply With Quote
  #12  
Old 08-29-2016, 06:45 PM
Reflex Reflex is offline
 
Join Date: Jan 2015
Location: Kansas
Posts: 169
Default

After some experimenting and careful consideration, I decided that I needed a pair of the vise grip dimpler from Cleaveland. Ordered them this evening. The plan is to try and straighten out the dimple and carefully squeeze an 1/8" Oops rivet into the vertical fin.

Had I known about the vise grip dimpler, I don't think I would have had a problem. My only other regret is that I reamed the hole out with a #30 reamer. I think it would have worked better if the hole had remained a #40.

I'll move on to the rear spar and wait for the vise grips to arrive. Worst case scenario is I learn to use a jeweler's file.

Thanks again for all the advice.

Fred
__________________
Dues Paid for 2020
RV-14
Empennage Complete (including fiberglass)
Wings complete (including fiberglass)
Fuse joined and working on painting interior
Reply With Quote
  #13  
Old 08-29-2016, 07:41 PM
Kyle Boatright Kyle Boatright is offline
 
Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,219
Default

I'll offer a few comments for the original poster:

-The way to determine if a dimple is adequate is whether the rivet sits flush with the skin prior to being driven. If it does, the dimple isn't the problem.

-In a confined space like that (and you'll find more in the flaps, ailerons, elevators, and rudder), a pop rivet (one of the MK 319-BS ones) is adequate. A well driven solid rivet would be preferable, but a properly set pop rivet is better than a poorly set hard rivet.

- That rivet is deferrable. Why not hold off on doing anything else until you get a tech counselor visit? Or until you have one of your local RV guys over to offer a hand. I'd wager that they could either help you with it, talk you through it, or do it for you in 5 minutes. A few months (and a couple of thousand rivets) down the road, that rivet will be child's play for you, so there is no need to frustrate yourself over it now.
__________________
Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
Reply With Quote
  #14  
Old 08-29-2016, 09:31 PM
leok leok is offline
 
Join Date: Apr 2013
Location: Clarkston, MI
Posts: 375
Default

When I get to a dimple I just can't get to, my favorite 'go to tool' is this one http://www.cleavelandtool.com/401-Ri.../#.V8T5wY-cGM8 with the correct dimple die.

I drilled a hole in the end of a long bucking bar to accept the corresponding male/female die that can slip into small places. A couple of light taps with the rivet gun is all it takes to make a nice dimple. You have to be very careful not to fully trigger the rivet gun or the die pounds in too far, so a couple of practice runs are a good idea.

In really tight spots (Usually where I screwed up and forgot a dimple or ten until after assembly ) I have even created a female by drilling a small scrap of 1/4" bar stock steel to the rivet shank size and using a countersink tool to create the female die profile. Set the male die in the material and into the die hole and give the rivet gun a few light taps.
__________________
Building started Oct 5th 2014, Flying since 1/16/2020
http://www.mykitlog.com/leok
RV Hotel, come by and visit if you're in town
Dues paid 2020
Reply With Quote
  #15  
Old 08-30-2016, 01:16 AM
Av8rRob's Avatar
Av8rRob Av8rRob is offline
 
Join Date: May 2005
Location: Rescue, CA. KROB
Posts: 352
Default

My solution to that rivet dimple was just done last week. Here's what I did.

The pop rivet dimpler was difficult to pull thru the tight hole with no clearance on the back side so I took off the dies. I then took an an426-3 rivet and pushed it thru the back of the female die. Place the rivet then thru the hole from the back side so the female die is aligned properly. The rivet head should just protrude the front (exterior) of the hole. Then place the male die on the rivet facing the skin. The rivet should hold the dies in correct alignment and position. I then took a regular pair of vise grips and squeezed the two dies together ensuring to grip the female die by the rivet head on sticking out the back side. The vise gaps made a great dimple that I then bucked with a piece of 3/16" steel bar bought at a metal supply store.

Worked great.
__________________
Rob Lasater
Rv-14 flying baby, yeah.
Paid Dec 2019
Reply With Quote
  #16  
Old 08-30-2016, 12:14 PM
mrhorspwr mrhorspwr is offline
 
Join Date: Aug 2016
Location: Okc, Oklahoma
Posts: 31
Default

you can always just pull a Cr 3214 4-1 cherry rivet in it. That is a reduced head rivet like the nas 1097 rivet you are trying to shoot now.
Reply With Quote
  #17  
Old 08-30-2016, 01:43 PM
Far North Texan Far North Texan is offline
 
Join Date: Jun 2015
Location: Alberta
Posts: 84
Default

Quote:
Originally Posted by BillL View Post
I am building a 7, but in this case a suggestion, spin the deburring tool in there 3-4 times lightly to true up the countersink and check the rivet fit, if it is perfect then good to go, unless - - - unless it always fit and it setting it has caused the lifting head. No guarantee. Good luck. Oh - I am assuming you have a no-hole yoke that allows good axial alignment of the main squeeze.
That skin is thick enough to take some countersink. You have oviously been deburring already. Hopefully you have the Avery speed deburrer. Give it a few spins and shave a bit out of the dimple until the rivet is flush. Dont get bogged down here, build on!
__________________
RV-6A slow build,
serial # 21681. First flight March 1993
Dec 2019 donation paid
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 06:31 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.