VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics


Go Back   VAF Forums > Main > RV General Discussion/News
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 06-25-2013, 09:49 AM
longranger's Avatar
longranger longranger is offline
 
Join Date: Mar 2007
Location: 45G, Brighton, MI
Posts: 1,867
Default

Quote:
Originally Posted by ppilotmike View Post
Tom,

When you are dimpling holes that are close to the fold of the sheet metal, flip your dimple dies over, so that the male side is in the top and then flip the sheet metal over so the fold goes "under" your bench and the DRDT2....
Male die on top is the orientation I always use in the DRDT. Lots fewer "tracks" on skins caused while looking for the hole.
__________________
Miles (VAF# 1238, Paid up as of 2018)
RV-7 TU 904KM (reserved)
Wings Fitted and Finish Kit on site

Construction Log
Picasa: Empennage Album, Wings Album, Fuselage Album

1955 Cessna 170B flying since 1982

'To get something you never had, you have to do something you never did.' -Unk.
Reply With Quote
  #12  
Old 06-25-2013, 01:14 PM
tegwilym tegwilym is offline
 
Join Date: Feb 2013
Location: Seattle, WA
Posts: 81
Default

Quote:
Originally Posted by ppilotmike View Post
Tom,

When you are dimpling holes that are close to the fold of the sheet metal, flip your dimple dies over, so that the male side is in the top and then flip the sheet metal over so the fold goes "under" your bench and the DRDT2. this will allow you to dimple all the way to the last hole and not have to pry open your nicely folded sheet. It will also remove the tension you talked about. This is important for 2 reasons: 1) keeps the work from jumping and 2) gives a nice round dimple instead of a potentially oblong one caused by the tension... Hope this helps. There's no reason you should have any figure eights with a DRDT2! Then again, as folks have said, it's fairly commonplace. KPTR my friend...
Good idea! I have seen people do it that way, but did I try that? No. I do think that was probably part of the problem. I was holding the sheet back with one hand, lining up the "male" with the hole and then trying to hold it open with my elbow, moving the lever with one hand and holding down with the other. It must have jumped out.
I'm in a smaller subgroup of the Dimple club - those who have screwed up with the DRDT2!
Reply With Quote
  #13  
Old 06-25-2013, 01:15 PM
tegwilym tegwilym is offline
 
Join Date: Feb 2013
Location: Seattle, WA
Posts: 81
Default

Quote:
Originally Posted by JanRV6UK View Post
Very often during the build you may need some scrap material to make something out of - Now you have some scrap material .. :-)
That is true. I have ideas for for sheet aluminum, I might have some now. I would also have a lot of the real stuff to practice riveting on - that is probably where the next accident will happen I'm sure.
Reply With Quote
  #14  
Old 06-25-2013, 01:18 PM
tegwilym tegwilym is offline
 
Join Date: Feb 2013
Location: Seattle, WA
Posts: 81
Default

Quote:
Originally Posted by longranger View Post
Male die on top is the orientation I always use in the DRDT. Lots fewer "tracks" on skins caused while looking for the hole.
I've just been using the method of male on bottom since that is what I saw in the video I watched. It was hard to line up when you are holding the fold back and searching out the hole at the same time. I'll try flipping it - after I figure out the plan of fix or new. I'm kind of leaning toward "new" now.

Any idea how much this part costs to replace?
Reply With Quote
  #15  
Old 06-25-2013, 04:59 PM
TThurston TThurston is offline
 
Join Date: Jan 2007
Location: Orem, UT
Posts: 213
Default Pop Rivet Dimple Die

It also works to use pop rivet dimple dies in areas that are hard to dimple with your standard dimple technique. It's a bit slower, but it's much less likely to give you problems.
__________________
Finishing -12 tail cone
-9A Empennage done, in storage
Reply With Quote
  #16  
Old 07-31-2013, 05:35 PM
tegwilym tegwilym is offline
 
Join Date: Feb 2013
Location: Seattle, WA
Posts: 81
Question I'm back again - the same problem but different this time.

I've started riveting the skin on the spar and now I realize that the little un-dimpled hole is really the one that was there from the factory. The other hole that is dimpled is my mistake dimple. How did I figure this out? I'm clekoing the skin on the spar to rive and find that the hole I thought was good, wasn't the one that was lined up with the spar hole.

Does anyone have a good idea about a workaround to make this thing ok?
Should I dimple this other hole and have two dimpled holes next to each other then fill in one when it's time to paint?
Or should I try to gently pound out the dimple, put in a new dimple on the correct hole after making it to a #40 size and fill in later?

I already riveted in that single nose rib so I can't pull the skin apart as much as I would like now, but I think I could still wiggle in the DRDT-2 if needed.
Cr@p. Maybe I SHOULD have replaced that skin after all? But it seemed easy enough to fill the hole. Here it is again - http://www.mykitlog.com/users/displa...=172804&row=12

Reply With Quote
  #17  
Old 08-01-2013, 12:09 AM
tegwilym tegwilym is offline
 
Join Date: Feb 2013
Location: Seattle, WA
Posts: 81
Default

My workaround. A friend suggested that I work out the dimple from the back with a spoon, and a buck bar on front. It took some careful pounding to get he dimple undone, then dimpled the correct hole. Here is the result. Just need some filler when the skin is painted and it should vanish. This photo is actually upside down from the other one, I really did swap the holes.

Last edited by tegwilym : 08-01-2013 at 12:14 AM.
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 01:54 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.