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fuel tank countersinks

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larkrv10(at)yahoo.ca
Guest

Posted: Mon May 02, 2011 6:09 pm Post subject: fuel tank countersinks

Hi all

  

 I'm just about to countersink the tank skins to the rear baffle, and can't figure out why we are to leave every 10th hole untouched only to go back later and then complete the countersink and rivetting etc.  Sounds like it has something to do with alignment???

  

 I must be missing something.  Can anyone explain?

  

 Thx,  Rick

  

 #40956

 Southampton, Ont

  

 I

 [quote][b]

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Neal.George(at)hurlburt.a
Guest

Posted: Tue May 03, 2011 3:51 am Post subject: fuel tank countersinks

Rick - 



The tank skins are barely thick enough to accept the countersink, thus

leaving a thin, fragile hole edge that is easily damaged by the clecos

used to hold things in place.  Leaving a number of holes with their full

thickness of metal and using those holes to align and clamp the

structure gives the builder a better chance of proper fit-up and final

assembly.



neal  



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william(at)gbta.net
Guest

Posted: Tue May 03, 2011 4:58 am Post subject: fuel tank countersinks

Rick, I know the instructions say to countersink, but I dimpled mine and 

everything turned out perfectly.  Dimpled the skins and the rear baffles. 

Much faster, more uniform holes, etc.......



Just a thought.



Bill



--------------------------------------------------

From: "George, Neal Capt 505 TRS/DOJ" <Neal.George(at)hurlburt.af.mil>

Sent: Tuesday, May 03, 2011 6:41 AM

To: <rv10-list(at)matronics.com>

Subject: RE: fuel tank countersinks



[quote] 

 <Neal.George(at)hurlburt.af.mil>



 Rick -



 The tank skins are barely thick enough to accept the countersink, thus

 leaving a thin, fragile hole edge that is easily damaged by the clecos

 used to hold things in place.  Leaving a number of holes with their full

 thickness of metal and using those holes to align and clamp the

 structure gives the builder a better chance of proper fit-up and final

 assembly.



 neal



 --

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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larkrv10(at)yahoo.ca
Guest

Posted: Tue May 03, 2011 5:03 pm Post subject: fuel tank countersinks

Ahh...I knew there was a simple reason.  Thx Neal

  

 Rick

  

 do not achive



--- On Tue, 5/3/11, George, Neal Capt 505 TRS/DOJ <Neal.George(at)hurlburt.af.mil> wrote:



 [quote]

From: George, Neal Capt 505 TRS/DOJ <Neal.George(at)hurlburt.af.mil>

Subject: RE: fuel tank countersinks

To: rv10-list(at)matronics.com

Received: Tuesday, May 3, 2011, 11:41 AM



 --> RV10-List message posted by: "George, Neal Capt 505 TRS/DOJ" <Neal.George(at)hurlburt.af.mil (Neal.George(at)hurlburt.af.mil)>



Rick - 



The tank skins are barely thick enough to accept the countersink, thus

leaving a thin, fragile hole edge that is easily damaged by the clecos

used to hold things in place.  Leaving a number of holes with their full

thickness of metal and using those holes to align and clamp the

structure gives the builder a better chance of proper fit-up and final

assembly.



neal  



--

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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larkrv10(at)yahoo.ca
Guest

Posted: Tue May 03, 2011 5:09 pm Post subject: fuel tank countersinks

Bill, I like the way you think.  Dimpling sounds like a great idea, far stronger.  I can't see any reason to countersink either. I assume you had no trouble getting the rear baffle in place when you had the tank sealant applied?

  

 Thx,   Rick

 #40956

 Southampton, Ont



--- On Tue, 5/3/11, Billy & Tami Britton <william(at)gbta.net> wrote:



 [quote]

From: Billy & Tami Britton <william(at)gbta.net>

Subject: Re: fuel tank countersinks

To: rv10-list(at)matronics.com

Received: Tuesday, May 3, 2011, 12:54 PM



 --> RV10-List message posted by: "Billy & Tami Britton" <william(at)gbta.net (william(at)gbta.net)>



Rick, I know the instructions say to countersink, but I dimpled mine and 

everything turned out perfectly.  Dimpled the skins and the rear baffles. 

Much faster, more uniform holes, etc.......



Just a thought.



Bill



--------------------------------------------------

From: "George, Neal Capt 505 TRS/DOJ" <Neal.George(at)hurlburt.af.mil (Neal.George(at)hurlburt.af.mil)>

Sent: Tuesday, May 03, 2011 6:41 AM

To: <rv10-list(at)matronics.com (rv10-list(at)matronics.com)>

Subject: RE: RV10-List: fuel  tank countersinks



[quote] --> RV10-List message posted by: "George, Neal Capt 505 TRS/DOJ" 

 <Neal.George(at)hurlburt.af.mil (Neal.George(at)hurlburt.af.mil)>



 Rick -



 The tank skins are barely thick enough to accept the countersink, thus

 leaving a thin, fragile hole edge that is easily damaged by the clecos

 used to hold things in place.  Leaving a number of holes with their full

 thickness of metal and using those holes to align and clamp the

 structure gives the builder a better chance of proper fit-up and final

 assembly.



 neal



 --

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

larkrv10(at)yahoo.ca
Guest

Posted: Wed May 04, 2011 2:11 am Post subject: fuel tank countersinks

Sorry guys/Bill, I meant to say "no reason not to countersink".

  

 Rick



--- On Wed, 5/4/11, Rick Lark <larkrv10(at)yahoo.ca> wrote:



 [quote]

From: Rick Lark <larkrv10(at)yahoo.ca>

Subject: Re: fuel tank countersinks

To: rv10-list(at)matronics.com

Received: Wednesday, May 4, 2011, 1:04 AM



      Bill, I like the way you think.  Dimpling sounds like a great idea, far stronger.  I can't see any reason to countersink either. I assume you had no trouble getting the rear baffle in place when you had the tank sealant applied?

  

 Thx,   Rick

 #40956

 Southampton, Ont



--- On Tue, 5/3/11, Billy & Tami Britton <william(at)gbta.net> wrote:



 [quote]

From: Billy & Tami Britton <william(at)gbta.net>

Subject: Re: fuel tank countersinks

To: rv10-list(at)matronics.com

Received: Tuesday, May 3, 2011, 12:54 PM



 --> RV10-List message posted by: "Billy & Tami Britton" <william(at)gbta.net>



Rick, I know the instructions say to countersink, but I dimpled mine and 

everything turned out perfectly.  Dimpled the skins and the rear baffles. 

Much faster, more uniform holes, etc.......



Just a thought.



Bill



--------------------------------------------------

From: "George, Neal Capt 505 TRS/DOJ" <Neal.George(at)hurlburt.af.mil>

Sent: Tuesday, May 03, 2011 6:41 AM

To: <rv10-list(at)matronics.com>

Subject: RE: fuel tank  countersinks



[quote] --> RV10-List message posted by: "George, Neal Capt 505 TRS/DOJ" 

 <Neal.George(at)hurlburt.af.mil>



 Rick -



 The tank skins are barely thick enough to accept the countersink, thus

 leaving a thin, fragile hole edge that is easily damaged by the clecos

 used to hold things in place.  Leaving a number of holes with their full

 thickness of metal and using those holes to align and clamp the

 structure gives the builder a better chance of proper fit-up and final

 assembly.



 neal



 --

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

william(at)gbta.net
Guest

Posted: Wed May 04, 2011 6:30 pm Post subject: fuel tank countersinks

That is the exact reason Vans told me not to dimple is  because of fitting the baffle between the skins/ into position after  dimpled.  I assure you, it's a non-issue.  When dimpled, they still  drop right in.

  

 Bill

  



  From: Rick Lark (larkrv10(at)yahoo.ca) 

 Sent: Wednesday, May 04, 2011 5:07 AM

 To: rv10-list(at)matronics.com (rv10-list(at)matronics.com) 

 Subject: Re: fuel tank countersinks

 



                   Sorry guys/Bill, I meant to say "no reason not to countersink".

        

       Rick



--- On Wed, 5/4/11, Rick Lark <larkrv10(at)yahoo.ca (larkrv10(at)yahoo.ca)>        wrote:



        	  Quote: 	
		  

From:          Rick Lark <larkrv10(at)yahoo.ca (larkrv10(at)yahoo.ca)>

Subject:          Re: fuel tank countersinks

To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)

Received:          Wednesday, May 4, 2011, 1:04 AM



                                                                    Bill, I like the way you think.  Dimpling sounds like a                great idea, far stronger.  I can't see any reason to                countersink either. I assume you had no trouble getting the rear                baffle in place when you had the tank sealant applied?

                

               Thx,   Rick

               #40956

               Southampton, Ont



--- On Tue, 5/3/11, Billy &                Tami Britton <william(at)gbta.net> wrote:



                	  Quote: 	
		  

From:                  Billy & Tami Britton <william(at)gbta.net>

Subject:                  Re: fuel tank countersinks

To:                  rv10-list(at)matronics.com

Received: Tuesday, May 3, 2011, 12:54                  PM



                 --> RV10-List message posted                  by: "Billy & Tami Britton" <william(at)gbta.net>



Rick,                  I know the instructions say to countersink, but I dimpled mine                  and 

everything turned out perfectly.  Dimpled the skins                  and the rear baffles. 

Much faster, more uniform holes,                  etc.......



Just a                  thought.



Bill



--------------------------------------------------

From:                  "George, Neal Capt 505 TRS/DOJ" <Neal.George(at)hurlburt.af.mil>

Sent:                  Tuesday, May 03, 2011 6:41 AM

To: <rv10-list(at)matronics.com>

Subject: RE:                  fuel tank countersinks



 	  Quote: 	
		   --> RV10-List                  message posted by: "George, Neal Capt 505 TRS/DOJ" 

                  <Neal.George(at)hurlburt.af.mil>



                  Rick -



 The tank skins are barely thick enough to                  accept the countersink, thus

 leaving a thin, fragile                  hole edge that is easily damaged by the clecos

 used to                  hold things in place.  Leaving a number of holes with their                  full

 thickness of metal and using those holes to align                  and clamp the

 structure gives the builder a better                  chance of proper fit-up and final

                  assembly.



 neal



 -----Original                  Message-----

 From: Rick Lark



 Hi                  all



 I'm just about to countersink the tank skins                  to the rear baffle, and

 can't figure out why we are to                  leave every 10th hole untouched only to

 go back later                  and then complete the countersink and rivetting etc.

                  Sounds like it has something to do with                  alignment???



 I must be missing something.                   Can anyone explain?



 Thx,                   Rick



 #40956

 St; http://f=                              - List Contributionsp;                                      &bsp;-->                  


	


	
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