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Rivet spacing

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grs-pms(at)comcast.net
Guest

Posted: Fri Oct 20, 2006 8:18 am Post subject: Rivet spacing

Here's another way to space your  rivets: 

  

  Mark the end rivets in the pattern and  measure the distance between them.  Divide that distance by the number of  equal spaces you need.  Be sure to use the number of spaces, which is one  less than the number of rivets in the pattern.  Enter the resulting number  in a calculator with a memory function, and store it in the memory.   Layout the distance from an end rivet to the next one in the pattern, using a  metric scale or tape measure.  From there on, get each successive  measurement (from the end rivet) by adding the number in memory to the number in  the calculator display.  This is more accurate than just measuring the  "equal space" dimension from rivet to rivet, since the little errors in  measurement don't accumulate.

  

 Of course, with this method, you don't have an  excuse for adding a rivet fan to your tool collection.

  

 George

   [quote][b]

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tinerj2005(at)tinerj.com
Guest

Posted: Fri Oct 20, 2006 9:12 am Post subject: Rivet Spacing

Yes, what I learned in the rudder class is to reduce the spacing slightly

to get the stated number of rivets. Doing this is easier with one of the

accordion fan spacing tools. Mark first and last hole, then set it at 40 mm

or whatever and then see if you get the right number. If too few, then

squeeze the fan so the number comes out right. This is going to happen a

lot as you proceed in putting together the other parts. On some with a long

throw that exceeds the reach of your fan, you may want to put in a center

mark for a rivet as well as the end marks and then use the fan to get the

left and right spacing.



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dbortol

Joined: 02 Sep 2006
Posts: 46

Posted: Fri Oct 20, 2006 10:13 am Post subject: Rivet spacing

Oops, I should have written  "... distance between the end rivets is 308mm... "



Dino



On 10/20/06, Dino Bortolin <dbortol(at)gmail.com> wrote:

 	  Quote: 	
		   I use a variation of the method that George described when the rivet

 pitch is dictated instead of the number of rivets:



 Mark the end rivets in the pattern and measure the distance between

 them. Divide that distance by the rivet pitch in the plans. Round the

 answer up to the next whole number. Now divide the original distance

 you measured by this whole number and use the answer the same way

 George described.



 An example to clarify, lets say the distance between the end rivets is

 312mm and the rivet pitch needed is a maximum of 40mm. Punch in

 308/40, you get 7.7, round this up to 8. Now punch in 308/8 =38.5mm.

 Store this number in the memory and use it for the rivet pitch.

 Dino



 On 10/20/06, George Swinford <grs-pms(at)comcast.net> wrote:

 > Here's another way to space your rivets:

 >

 >  Mark the end rivets in the pattern and measure the distance between them.

 > Divide that distance by the number of equal spaces you need.  Be sure to

 use

 > the number of spaces, which is one less than the number of rivets in the

 > pattern.  Enter the resulting number in a calculator with a memory

 function,

 > and store it in the memory.  Layout the distance from an end rivet to the

 > next one in the pattern, using a metric scale or tape measure.  From there

 > on, get each successive measurement (from the end rivet) by adding the

 > number in memory to the number in the calculator display.  This is more

 > accurate than just measuring the "equal space" dimension from rivet to

 > rivet, since the little errors in measurement don't accumulate.

 >

 > Of course, with this method, you don't have an excuse for adding a rivet

 fan

 > to your tool collection.

 >

 > George

 >

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dbortol

Joined: 02 Sep 2006
Posts: 46

Posted: Fri Oct 20, 2006 10:17 am Post subject: Rivet spacing

I use a variation of the method that George described when the rivet

pitch is dictated instead of the number of rivets:



Mark the end rivets in the pattern and measure the distance between

them. Divide that distance by the rivet pitch in the plans. Round the

answer up to the next whole number. Now divide the original distance

you measured by this whole number and use the answer the same way

George described.



An example to clarify, lets say the distance between the end rivets is

312mm and the rivet pitch needed is a maximum of 40mm. Punch in

308/40, you get 7.7, round this up to 8. Now punch in 308/8 =38.5mm.

Store this number in the memory and use it for the rivet pitch.

Dino



On 10/20/06, George Swinford <grs-pms(at)comcast.net> wrote:

 	  Quote: 	
		   Here's another way to space your rivets:



  Mark the end rivets in the pattern and measure the distance between them.

 Divide that distance by the number of equal spaces you need.  Be sure to use

 the number of spaces, which is one less than the number of rivets in the

 pattern.  Enter the resulting number in a calculator with a memory function,

 and store it in the memory.  Layout the distance from an end rivet to the

 next one in the pattern, using a metric scale or tape measure.  From there

 on, get each successive measurement (from the end rivet) by adding the

 number in memory to the number in the calculator display.  This is more

 accurate than just measuring the "equal space" dimension from rivet to

 rivet, since the little errors in measurement don't accumulate.



 Of course, with this method, you don't have an excuse for adding a rivet fan

 to your tool collection.



 George

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jhstarn(at)verizon.net
Guest

Posted: Fri Oct 20, 2006 10:37 am Post subject: Rivet Spacing

Since the RV-4/HRII's were not prepunched (or pre anything) we did as others 

have noted. Find & mark the two ends of the rivet line. Using a rivet fan 

open & close to give you proper spacing. Punch the end two holes & drill 

them, cleco the two ends of the fan to these holes. Using a spring loaded 

punch thru the holes in the fan you can mark & leave guide marks in one 

operation. Remove the fan, re-punch the marks. Too long a run ?, Mark the 

two ends (they will end somewhere) Half, quarter, thirds the run, drill & 

cleco. The fan, punch & cleco methods allows it to be done be a single 

person & the fan holes can't move. Put tape or shop cloth under the center 

line of the fan to keep from scratching the surface while "punching".

Remember: Your building an airplane NOT a Rolex.

 Get 'er done. KABONG Do Not Archive as I sure it's in there.



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zodierocket(at)hsfx.ca
Guest

Posted: Fri Oct 20, 2006 1:31 pm Post subject: Rivet spacing

My god that hurts my head and I didn’t even finish reading it all. Can’t afford a rivet fan spacing tool? Go into the house, bottom drawer of your dresser and yank out those track pants that you never wear any more. Cut a hole in seam and yank out elastic waist band. Now carefully mark lines every ten millimeters. Go out to workshop and count how may rivets you need say 9 now count to 9 on the elastic and place first line on first rivet location. STRETCH waistband so that line #9 is where it is supposed to be. Now you have equal distance for rest of rivets. If you can’t clamp waistband down or cleco it in place then set sharpie between teeth. After your all done grab some duct tape and safety wire and you can repair your track pants. Elastic cannot be replaced into the pants as it just became to handy in the shop. J Put on pants with safety wire as suspenders and grab a coffee. Next comes the bad part! With pants on and coffee in hand call wife out to the workshop to show her just how much of a genius her husband is, If she is anything like mine she will disappear into the house shaking her head vigorously and muttering something about senile old fool or something to that effect !   

     

Mark Townsend  

Can-Zac Aviation Ltd.  

president(at)can-zacaviation.com (president(at)can-zacaviation.com)  

www.can-zacaviation.com   

  

   

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planejim(at)bellsouth.net
Guest

Posted: Mon Oct 23, 2006 1:47 pm Post subject: Rivet spacing

Mark,

  

 You are one fuuny guy! Reminds me of the Red  Green Show.

  

 I really enjoyed that.

  

 Jim Hoak

  

 [quote]   ---

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blarson(at)meridianhouse.
Guest

Posted: Mon Oct 23, 2006 2:25 pm Post subject: Rivet spacing

He's probably* *Old Man Sedgwick...



For those of you who have no idea what we're talking about:   

www.redgreen.com



Brad Larson

Card Carrying Possum Lodge Member

701CE (no duct tape.... yet)

do not archive



Jim Hoak wrote:

[quote] Mark,

  

 You are one fuuny guy! Reminds me of the Red Green Show.

  

 I really enjoyed that.

  

 Jim Hoak

  



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naumuk(at)alltel.net
Guest

Posted: Tue Oct 24, 2006 2:48 pm Post subject: Rivet spacing

Ahh- FINALLY, someone acknowledges the true father of homebuilding! In 

aviation, it's known as "Speed Tape". For groundbounds, the "Handyman's 

secret weapon".

    If you still have no idea what we're all talking about, you'll just have 

to bite the bullet and watch the educational channel.

    DONT look at me like I just told you to eat your Rutabagas! (Broccoli is 

actually one of the most popular vegetables) Check your local listings.

Bill Naumuk

HDS Fuselage

Townville, Pa

---

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