Matronics Email Lists :: View topic - Fitting wings to fuse

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Fitting wings to fuse

Matronics Email Lists Forum Index -> Zenith701801-List

View previous topic :: View next topic

Author Message

Curt.Thompson(at)verizon.
Guest

Posted: Thu Aug 27, 2009 6:38 am Post subject: Fitting wings to fuse

I'm ready to fit up the wings to the fuselage.  Is there a sheet in the

drawings or a page in the "Photo Assembly Guides" that describes how to

this?  It looks like 7V10 shows a 75mm dihedral.  How do I set the incidence

angle?  Is the top of the horizontal stab, bottom of the wing, and the

reference E-A line (7F15) all parallel?  I assume that the forward edge of

the right/left wing are aligned (no swept angle).



Curt Thompson

Plans building CH701

Redmond, WA, USA

Harvey Richards

Joined: 26 Aug 2008
Posts: 39
Location: Nova Scotia

Posted: Thu Aug 27, 2009 8:10 am Post subject: Re: Fitting wings to fuse

Mark Townsend did a blog on the Zenith Aero website about fitting the wings. I think it entailed drilling the forward holes for the wing spar then leaving the drill bit in place. The rear posistion was set with a string above the main spars by lining them up.

_________________
CH 701

dougsnash

Joined: 14 Apr 2008
Posts: 281

Posted: Thu Aug 27, 2009 8:12 am Post subject: Fitting wings to fuse

Hey Curt, I have to agree that the plans are a little vague in this area.  I just mounted my wings in the last month and had to do some real head scratching to come up with a plan.  The fisrt step is to set up your rear spar mount.  The fit of the inboard end of the training edge against the fuselage kind of sets where the wing will live.  



Once you have the rear of the wing located, run a string down the spar line to eliminate the forward or rearward sweep in the wings and set the dihedral.  I am at work right now so I don't know which page it is on in the plans but there is a diagram showing this and some other information there (not a lot).



The incidence angle seems to be set by the location of the front and rear spar mounts and there is not a lot of adjustment there.  To set the dihedral, level the fuselage and measure up the the spar string at rib #1.  This distance should be 75mm (if I remember correctly).



The biggest advice I can give is don't drill any of the spar holes until you are sure that everything is as close to perfect as you can get it.  Start out with a pilot hole of 3/32" and drill out to 5/16 in stages.  It is possible to make minor adjustments as you drill the holes out to final size but not a lot.



Hope this helps a bit



Doug MacDonald

CH-701 scratch Builder

NW Ontario, Canada



Do Not Archive



--- On Thu, 8/27/09, Curt Thompson <Curt.Thompson(at)verizon.net> wrote:



 	  Quote: 	
		   From: Curt Thompson <Curt.Thompson(at)verizon.net>

 Subject: Fitting wings to fuse

 To: zenith701801-list(at)matronics.com

 Received: Thursday, August 27, 2009, 9:28 AM

 --> Zenith701801-List message

 posted by: "Curt Thompson" <Curt.Thompson(at)verizon.net>

 

 I'm ready to fit up the wings to the fuselage.  Is

 there a sheet in the

 drawings or a page in the "Photo Assembly Guides" that

 describes how to

 this?  It looks like 7V10 shows a 75mm dihedral. 

 How do I set the incidence

 angle?  Is the top of the horizontal stab, bottom of

 the wing, and the

 reference E-A line (7F15) all parallel?  I assume that

 the forward edge of

 the right/left wing are aligned (no swept angle).

 

 Curt Thompson

 Plans building CH701

 Redmond, WA, USA

 
	


      __________________________________________________________________

Make your browsing faster, safer, and easier with the new Internet Explorer® 8. Optimized for Yahoo! Get it Now for Free! at http://downloads.yahoo.com/ca/internetexplorer/

Harvey Richards

Joined: 26 Aug 2008
Posts: 39
Location: Nova Scotia

Posted: Thu Aug 27, 2009 8:17 am Post subject: Re: Fitting wings to fuse

The Blog was under Can-zac and titled Wing Attatch

_________________
CH 701

ronlee

Joined: 25 Dec 2006
Posts: 141

Posted: Thu Aug 27, 2009 9:01 am Post subject: Re: Fitting wings to fuse

Make sure that each wing has the same angle of attack as the other. If they are even a little it will act as a propeller and you will end up with a heavy wing. I use a four foot level with a stand off. I leveled from the main spar to the rear spar and adjusted from wing to wing until they were identical. When all was right I clamped and drilled.

_________________
Ron Lee
Tucson, Arizona

Curt.Thompson(at)verizon.
Guest

Posted: Thu Aug 27, 2009 9:34 am Post subject: Fitting wings to fuse

That was useful but didn't answer my question about incidence angle.  It

seems to me that the angle of the horizontal stab to the wing would be

important.



Curt



--

Harvey Richards

Joined: 26 Aug 2008
Posts: 39
Location: Nova Scotia

Posted: Thu Aug 27, 2009 11:55 am Post subject: Re: Fitting wings to fuse

The direction to the Blog was to answer the question of wing sweep.

_________________
CH 701

tbonsell(at)luxuria.com
Guest

Posted: Fri Aug 28, 2009 6:20 am Post subject: Fitting wings to fuse

Yeah I just put my wings on.



In the end I had a water level on the fuse, a water level from wingtip  

to wing tip, two tape measures from wingtips to tail, a string from  

wingtip to wingtip for the 75mm, horizontal laser level for fuse and  

tail and a digital level for incidence. No bubble levels.



It took a long long time.

Curt.Thompson(at)verizon.
Guest

Posted: Fri Aug 28, 2009 7:47 am Post subject: Fitting wings to fuse

I found some info in the list archive that indicates that the incidence

angle should be zero.  One builder indicated that he have to lower the front

of the horizontal stab by 1/2 inch.



It took most of the day but I got the wings and horizontal stab mounted.  My

water level came in real handy.



Curt

joemotis(at)gmail.com
Guest

Posted: Fri Aug 28, 2009 6:16 pm Post subject: Fitting wings to fuse

 	  Quote: 	
		  I am having a bit of trouble making the nose ribs on the form block. Using the vise grip fluting tool from Spruce but maybe the 3/8 rod tool shown in the prints would work better. Any helpful hints? 	
   

 Joe Motis

 750 plans and Pietenpol assistant

 [quote]



http://www.matronics.com/Navigator?Zenith====================

  http://forums.mle, List Admin.

 =====



[b]

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith701801-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