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Attaching floors with nutplates.

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ssamps(at)gmail.com
Guest

Posted: Thu Aug 24, 2006 9:36 am Post subject: Attaching floors with nutplates.

Is it OK to substitute nutplanes and #6 screws for LP4-3 rivets when installing the floors? Thanks, Steve. RV4 #4478  [quote][b]

dan.beadle(at)inclinesoft
Guest

Posted: Thu Aug 24, 2006 10:49 am Post subject: Attaching floors with nutplates.

I did this in my RV8.  I wanted access for future plumbing and wiring.  In the RV8, the forward floors are screwed, the rest riveted.  The rivet pattern is much closer, so I figure that using screws will do the job. I did us #8’s though (same as in the front floor).  They are 1/3 larger, but nearly twice as strong.    

   

I also screwed in the floor of the rear baggage area for the same reason.   

   

Dan  

         

  

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Steve Sampson

 Sent: Thursday, August 24, 2006 10:36 AM

 To: rv-list

 Subject: Attaching floors with nutplates.  

  

   

Is it OK to substitute nutplanes and #6 screws for LP4-3 rivets when installing the floors? Thanks, Steve. RV4 #4478    	  Quote: 	
		     	
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steve(at)newtech.com
Guest

Posted: Thu Aug 24, 2006 10:49 am Post subject: Attaching floors with nutplates.

Steve Sampson wrote:



 	  Quote: 	
		   Is it OK to substitute nutplanes and #6 screws for LP4-3 rivets when 

 installing the floors? Thanks, Steve. RV4 #4478


	


I am using #8 screws and nut plates for the floor and baggage area side 

panels.  Sure hope there isn't a problem with using screws.



Steve Eberhart

RV-7A, flipping the canoe this weekend.

recapen(at)earthlink.net
Guest

Posted: Thu Aug 24, 2006 11:06 am Post subject: Attaching floors with nutplates.

I used countersunk #8's for consistency - glad I used the nutplates!

 

Pictures zap me direct......



--

chaztuna(at)adelphia.net
Guest

Posted: Thu Aug 24, 2006 11:10 am Post subject: Attaching floors with nutplates.

---- Steve Eberhart <steve(at)newtech.com> wrote: 

 	  Quote: 	

 Steve Sampson wrote:

 > Is it OK to substitute nutplanes and #6 screws for LP4-3 rivets when 

 > installing the floors? Thanks, Steve. RV4 #4478

 I am using #8 screws and nut plates for the floor and baggage area side 

 panels.  Sure hope there isn't a problem with using screws.

 Steve Eberhart

 RV-7A, flipping the canoe this weekend.

Steve,

 Early on in my 8A project, my RV guru warned me to avoid using screw/nutplate combinations smaller than #8. He said that in certified aircraft, the incidence of broken or seized hardware went WAY up, below #8 size. I even upsized the #6 tailcone access screws to #8 for that reason.

 One tip when using flush #8 screws, use a #17 rather than a #19 drill bit in any sheet aluminum which will require a #8 dimple. This is because the aluminum is distorted a considerable amount with #8 and larger flush screws. You are very likely to get lots of micro cracks (which will spread over time) if you use the smaller #19 bit. The extra hole size stress relieves the hole during dimpling. Test this out on a piece of scrap. Check the dimple around the #19 hole with a Jeweler's loop or magnifying glass.

Charlie Kuss

bertrv6(at)highstream.net
Guest

Posted: Thu Aug 24, 2006 1:36 pm Post subject: Attaching floors with nutplates.

Quoting chaztuna(at)adelphia.net:

 	  Quote: 	

 ---- Steve Eberhart <steve(at)newtech.com> wrote:

 > 

 >

 > Steve Sampson wrote:

 >

 > > Is it OK to substitute nutplanes and #6 screws for LP4-3 rivets when

 > > installing the floors? Thanks, Steve. RV4 #4478

 >

 > I am using #8 screws and nut plates for the floor and baggage area side

 > panels.  Sure hope there isn't a problem with using screws.

 >

 > Steve Eberhart

 > RV-7A, flipping the canoe this weekend.

STEVE;; THAT IS WHAT I DID, NO. 8, HOWEVER, DO NOT PUT MORE THAN THE

NO OF HOLES CALLED IN THE PLANS... I DID NOT PAY ATTENTION TO THIS, AND

ALMOST DOUBLE THE AMOUNT OF SCREWS,,BELIEVE ME IT IS A PAIN, REMOVING

  ALL THOSE SCREWS, WHEN YOU NEED TO DO SO... I WONDER IF IS NOT BETTER

TO DO AS ORNDORF SAYS, TO USE POT RIVETS AND THAT IS IT...BUT YOU NEED TO

RUN NEW ELECTRIC CABLES IN THE FUTURE, OR OTHER THINGS, YOU WOULD BE STUCKED

WITH IT...

JUST ANOTHER THOUGHT.

BERT

RV6A

DO NOT ARCHIVE

 	  Quote: 	
		   Steve,

  Early on in my 8A project, my RV guru warned me to avoid using

 screw/nutplate combinations smaller than #8. He said that in certified

 aircraft, the incidence of broken or seized hardware went WAY up, below #8

 size. I even upsized the #6 tailcone access screws to #8 for that reason.

  One tip when using flush #8 screws, use a #17 rather than a #19 drill bit in

 any sheet aluminum which will require a #8 dimple. This is because the

 aluminum is distorted a considerable amount with #8 and larger flush screws.

 You are very likely to get lots of micro cracks (which will spread over time)

 if you use the smaller #19 bit. The extra hole size stress relieves the hole

 during dimpling. Test this out on a piece of scrap. Check the dimple around

 the #19 hole with a Jeweler's loop or magnifying glass.

 Charlie Kuss

shempdowling2(at)earthlin
Guest

Posted: Thu Aug 24, 2006 1:46 pm Post subject: Attaching floors with nutplates.

I would consider using torx screws  .  I hate removing those #8 phillip heads.  Same with the seat panels  and baggage panels.

  

 Shemp/Jeff Dowling

RV-6A, N915JD

295  hours

Chicago/Louisville

  

 [quote]   ---

Dick Sipp

Joined: 11 Jan 2006
Posts: 215
Location: Hope, MI

Posted: Thu Aug 24, 2006 5:47 pm Post subject: Attaching floors with nutplates.

Steve:

  

 I used nut plates on the floors of my 4 and was very glad I  did.  I removed the floors at each annual and once when a passenger got  sick in the airplane.  You would not believe how much stuff collects on the  skins below the floors; dirt, moisture, etc.

  

 It's nice to be able to clean it out now and  then.

  

 Dick Sipp

  

 ---

dvanwinkle(at)royell.net
Guest

Posted: Tue Aug 29, 2006 9:55 am Post subject: Attaching floors with nutplates.

Jeff

  

 I agree with you on using only torx screws and also  with Charley on using only 8-32 screws. I am installing the seat and baggage  floors, the baggage bulkheads, and the baggage side covers almost totally with  SS 100 degree flush 6 lobe 8-32 machine screws.  In a small number of  locations that will not accept flush screws/nutplates, I am using SS button head  6 lobe 8-32 screws. These screws are available from Micro Fasteners (  microfasteners.com ) ( 800-892-6917 ) Lebanon, NJ. They use a standard Torx T-15  driver.

  

 Dean Van Winkle

 RV-9A Fuselage/ Finish/ Engine

 [quote]   ---

FLYaDIVE(at)aol.com
Guest

Posted: Tue Aug 29, 2006 2:12 pm Post subject: Attaching floors with nutplates.

Jeff & Dean:



I like the look of Torx head screws and they work very well.  But, why add a 

part that is not, shall we say standard?  If you are away from home and need 

to do a little maintenance or something works its way down into no-man's land 

.. Your girlfriends diamond from the engagement ring.  It will be just a 

stumbling block to obtain a driver.



Barry

"Chop'd Liver"



"Show them the first time, correct them the second time, kick them the third 

time." 

Yamashiada

ronlee(at)pcisys.net
Guest

Posted: Tue Aug 29, 2006 2:45 pm Post subject: Attaching floors with nutplates.

 	  Quote: 	
		  I like the look of Torx head screws and they work very well.  But, why add a

part that is not, shall we say standard?  If you are away from home and need

to do a little maintenance or something works its way down into no-man's land

... Your girlfriends diamond from the engagement ring.  It will be just a

stumbling block to obtain a driver.


	


You mean the torx driver is not in your travel kit?  A fishing tackle box can

contain many items that will help you with repairs away from home.



Ron Lee

bicyclop(at)pacbell.net
Guest

Posted: Tue Aug 29, 2006 4:03 pm Post subject: Attaching floors with nutplates.

You don't carry a tool kit?



Pax,



Ed Holyoke



--

Larry Bowen

Joined: 09 Jan 2006
Posts: 802
Location: NC, USA

Posted: Tue Aug 29, 2006 7:56 pm Post subject: Attaching floors with nutplates.

Ditto.  I've swapped many of the torx or hex screws I used initially out for

SS phillips for that very reason.  Some places they make sense (forward

baggage floor still has hex cap screws, very helpful.)  Other places,

there's no point (spinner).  IMO.



-

Larry Bowen, RV-8, RV-7 VS

Larry(at)BowenAero.com

http://BowenAero.com

 



[quote] --

_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress...

Mark Phillips in TN

Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

Posted: Wed Aug 30, 2006 3:12 am Post subject: Attaching floors with nutplates.

In a message dated 08/29/2006 9:11:33 PM Central Daylight Time, FLYaDIVE(at)aol.com writes:

  	  Quote: 	
		  If you are away from home and need 

to do a little maintenance or something works its way down into no-man's land 	


 >>>

 I keep a small 1/4" ratchet and each of the bits/sockets for most routine items on my plane in my on-board toolkit, which is a single Shure microphone bag about the size of a small shaving kit that essentially vainishes on the floor between the seats on my -6A.  There are also several spare Torx screws of each size I use in there too.

  

 (also tie-down rings, electrical tape, wingjack blocks and basic tools to remove all access covers, cowling, pants and do most away-from-home chores- no spare engine or kitchen sink tho...)

  

 From The PossumWorks in TN

 Mark Phillips - N51PW "Mojo" with LOTS of Torx screws on board!

_________________
From The PossumWorks...

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