Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Wing Spar Rivet Line CH701

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Zenith-List
View previous topic :: View next topic  
Author Message
mcolbeck



Joined: 31 Dec 2006
Posts: 13
Location: Cochrane, Alberta
PostPosted: Fri Apr 06, 2007 4:02 pm    Post subject: Wing Spar Rivet Line CH701 Reply with quote
I have drilled the top of the left wing spar rivet line. My issue is that a number of the holes are slightly oval. I would like to either drill out to A5 rivets or add A4 rivets every 20mm (in between the others). Is this OK. My spacing distance is fine even at 20mm apart and I am perfectly centered on the spar. I just messed up the sequencing and drill the spar before the nose skin. The center spar doubler has not been drilled so this would be at pitch 40 as per the plans. Help please.

- The Matronics Zenith-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?Zenith-List

_________________
CH701 Builder and new flyer
Rudder, HS, and Elevator completed
Left wing Complete
50% complete on Right Wing
99% Complete on Fuselage
Engine installed almost ready to fire
Instrument panel and electrical Complete
Back to top
View user's profile Send private message Send e-mail Visit poster's website
jeffrey_davidson(at)earth
Guest
PostPosted: Fri Apr 06, 2007 5:00 pm    Post subject: Wing Spar Rivet Line CH701 Reply with quote
My issue is that a number of the holes are slightly oval.

==> If you will be putting a rivet in the hole, look at recent posts on
this issue to find out how to get a more round hole. The normal advice is
that the rivet will fill up the slightly triangular hole. If it is a bolt,
it may be of more concern.

I just messed up the sequencing and drill the spar before the nose skin. The
center spar doubler has not been drilled so this would be at pitch 40 as per
the plans. Help please.
==> Go to one of the tool vendors like Aircraft Tool Supply, Brown Tools, or
US Tools and look for a tool called a strap duplicator. These are made to
allow you to drill a hole in a top skin that lines up with an existing hold
in the surface below it. You probably do not need the extra holes and
rivets.

Jeff D.
CH 601 HD

- The Matronics Zenith-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?Zenith-List
Back to top
Jaybannist(at)cs.com
Guest
PostPosted: Fri Apr 06, 2007 5:56 pm    Post subject: Wing Spar Rivet Line CH701 Reply with quote
You can easily make your own "strap duplicator" or what I call a hole finder.

Take two strips of .025 aluminum that are about 1" x 4 or 5 inches. Stack them and drill two holes in one end for A4 rivets, about 3/4" apart. Cleco the two strips together. At the other end, drill through both with a #40 drill bit. Take the strips apart and put an A3 rivet into one of the single end holes. Rivet the two strips together with the A3 rivet in the bottom one, with the head up. The "tail" will just fit in a #30 hole. Slip the device over the edge of the skin sheet and find the rivet hole with the A3 rivet. Viola! You now have a pilot hole directly over the existing rivet hole. I just drill enough to make a definite "center" and remove the device before completing the hole. That way, I don't drill through to the lower strip and ruin it. I made two of these, one with an A3 rivet for #30 holes and another with an A4 rivet for #20 holes.

If this is not clear, I can send a drawing.

Jay in Dallas


"Jeff " <jeffrey_davidson(at)earthlink.net> wrote:

Quote:


My issue is that a number of the holes are slightly oval.

==> If you will be putting a rivet in the hole, look at recent posts on
this issue to find out how to get a more round hole. The normal advice is
that the rivet will fill up the slightly triangular hole. If it is a bolt,
it may be of more concern.

I just messed up the sequencing and drill the spar before the nose skin. The
center spar doubler has not been drilled so this would be at pitch 40 as per
the plans. Help please.
==> Go to one of the tool vendors like Aircraft Tool Supply, Brown Tools, or
US Tools and look for a tool called a strap duplicator. These are made to
allow you to drill a hole in a top skin that lines up with an existing hold
in the surface below it. You probably do not need the extra holes and
rivets.

Jeff D.
CH 601 HD



- The Matronics Zenith-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?Zenith-List
Back to top
TxDave



Joined: 22 Jul 2006
Posts: 168
Location: Temple, TX
PostPosted: Fri Apr 06, 2007 10:01 pm    Post subject: Re: Wing Spar Rivet Line CH701 Reply with quote
Awhile back I called ZAC about a couple of bad holes in my spar cap. Nick advised me to drill out to the next larger size rivet. He said this was usually best solution.

Jay...thanks for the info on the hole finder. I had seen those before but didn't understand their use until you explained it. Learn something new every day!

Dave Clay
Temple, TX
601XL scratch builder
http://www.daves601xl.com

- The Matronics Zenith-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?Zenith-List
Back to top
View user's profile Send private message Send e-mail Visit poster's website
mcolbeck



Joined: 31 Dec 2006
Posts: 13
Location: Cochrane, Alberta
PostPosted: Sat Apr 07, 2007 5:56 am    Post subject: Re: Wing Spar Rivet Line CH701 Reply with quote
Thanks Guys thats a big help. Love the idea on building your own duplicator...but i ordered one already. I have seen them before but completely forgot about them when I need to use them.
Thanks again.

- The Matronics Zenith-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?Zenith-List

_________________
CH701 Builder and new flyer
Rudder, HS, and Elevator completed
Left wing Complete
50% complete on Right Wing
99% Complete on Fuselage
Engine installed almost ready to fire
Instrument panel and electrical Complete
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Zenith-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group