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10-18-2015, 06:16 PM
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Join Date: Oct 2015
Location: Washington
Posts: 19
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Dimpling
Hey All,
First post here, looking forward to starting an RV-8 build next month. Should be picking up wing and tail kits soon.
I'm organizing, planning, gathering tools, etc. I built a Sonex tail kit before deciding that the Sonex was too small and it's worth it to move up to what I really want.
My current question has to do with dimpling. Sonex sells a dimple die set to be used with a pop rivet puller. I flush riveted all external rivets on the Sonex tail using this dimple die set and found it to be very quick and easy. Is there any reason that I could not dimple this way for the RV? Obviously, I would need a different dimple die set (100 deg solid rivets vs 120 deg pop rivets). Is there a source for 100 deg dimple dies to use with a pop rivet puller?
Any other thoughts on this approach?
Thanks,
Scott
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10-18-2015, 06:29 PM
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Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,797
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Before Mike gets in, let me say welcome!
An 8 requires a lot of dimpling. Either a C frame or a DRDT-2 will be quicker and produce better results than a pull-die. But there are a few places where the pull-dimpler works and the others don't. IMHO in skilled hands the C frame may produce slightly better results; the DRDT-2 is easier to use.
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10-18-2015, 06:31 PM
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Join Date: Jan 2005
Location: Tampa, FL
Posts: 2,861
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Yes there are dimple dies for blind rivet pullers for both 3/32 and 1/8 rivets and I recommend getting at least a set of the 3/32 ones. However, using pulled dimple dies are waaaayyyyyy slower than say a c-frame ( or in my case a DRDT-2 ) or putting dies in a manual/pneumatic rivet squeezer. I just can't imagine dimpling an entire RV using the pulled dies.
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Todd "I drink and know things" Stovall
PP ASEL-IA
RV-10 N728TT - Flying!
WAR EAGLE!
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10-18-2015, 06:40 PM
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Join Date: Aug 2014
Location: Bowie MD
Posts: 886
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Not sure what thickness skin the sonex' use, but I've not had satisfactory results with a pop rivet dimpler on greater than .020 skins. On my mustang, .032 rules the day and the puller will make a dent, but not deep dimples required for -3 & -4 rivets. Only a c-frame or squeezer will do the job with the standard spring back dimple dies. OR if youre really old school, banging a 426 rivet into the skins backed up by a female die made of a block of steel.....
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Mani
Busby MustangII (FoldingWing) Pending DAR.
Don't be a hater; I'm a cousin with thin wings! 
N251Y (res)
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10-18-2015, 06:54 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,256
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I know of one fairly famous DAR who claims that all of his dimpling has been done with the pop-rivet puller. YMMV!
I prefer my pnuematic squeezer in concert with the C-frame for deeper dimpling. But I do have a set of pop-rivet dimple dies for occasional spots.
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Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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10-18-2015, 07:07 PM
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Join Date: Nov 2008
Location: Olympia,WA
Posts: 210
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Scott
Where in Wa State do you live?
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Arnie Barros
VAF #1401
(N89269) reserved
"Seek to understand before trying to be understood"
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10-18-2015, 07:16 PM
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Join Date: Jan 2013
Location: Greensboro, NC
Posts: 173
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I have done the vast amount of the work on my -7 alone, and the DRDT-2 and a pneumatic squeezer have been a great help. I am a believer.
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10-21-2015, 02:03 PM
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Join Date: Oct 2015
Location: Washington
Posts: 19
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Thanks for the tips and welcome, everyone. Arnie, I'm in Seattle, btw.
I got good results dimpling up to 0.032 for the Sonex, but the 100 deg dimple would be a little deeper and more difficult. I'm going ahead and getting a c frame, but I'll experiment with the pop rivet style as well.
Do any of the usual tool vendors (Avery, etc) sell them?
Thanks again,
Scott
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10-21-2015, 02:26 PM
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Join Date: Feb 2015
Location: Oklahoma City
Posts: 913
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I picked up a Cframe and Pneumatic squeezer from Cleaveland Tools. Struggled with the Cframe until I made a table for it. Now I can rock through dimples using the squeezer and Cframe.
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10-21-2015, 02:27 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,947
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Tools
Quote:
Originally Posted by srt
Thanks for the tips and welcome, everyone. Arnie, I'm in Seattle, btw.
I got good results dimpling up to 0.032 for the Sonex, but the 100 deg dimple would be a little deeper and more difficult. I'm going ahead and getting a c frame, but I'll experiment with the pop rivet style as well.
Do any of the usual tool vendors (Avery, etc) sell them?
Thanks again,
Scott
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Scott
Welcome
Yes. Avery, Clevelant and others sell sets.
__________________
Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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