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Autocad drawings for CH701 form blocks?

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Curt.Thompson(at)verizon.
Guest

Posted: Thu Jan 17, 2008 9:45 pm Post subject: Autocad drawings for CH701 form blocks?

Got my CH701 plans in the mail today.  Yippee!!  

  

Are there autocad drawings somewhere that I can use to make form blocks for the CH701?  A draft-lady friend of mine says she can print them on a big plotter and tweak them so they are full scale.  I’m thinking I could then glue the paper to wood to make the form blocks.  

Curt  

Redmond, WA – Building hours zero (0)  

      [quote][b]

ch701builder

Joined: 07 Feb 2006
Posts: 119
Location: N38.9947,W105.1305,ALT. 9,100'

Posted: Fri Jan 18, 2008 4:59 am Post subject: Autocad drawings for CH701 form blocks?

Curt

goto www.ch701.com

then click on Builders resources.



I have uploaded some DXF and PDF files that should help.

Also, there are not any drawings for the tail section on these drawings. I bought the tail as a kit, but everything else is by scratch.



(Also, just double check the drawings..before you cut..)

Actually while I am thinking about it, double check the top skin at the tail end. I think that it is not correct. My plans have 2 conflicting dims. and I think I went with the wrong one (of course)

Keith

CH701 -- scratch

N 38.9947

W 105.1305

Alt. 9,100'



*************************************************************************************

--

randy(at)rjhebertassoc.co
Guest

Posted: Fri Jan 18, 2008 5:36 am Post subject: Autocad drawings for CH701 form blocks?

Curt

 I drew the rudder ribs and spars in AutoCAD but quickly found out  that it was much easier to simply draw the pattern out on the wood  directly.

  

 There is no way to assure your plotter will plot to the exact  scale.  There can be distortion.  I didn't want to take the  chance.

  

 Using a Sharpie doesn't give you much accuracy though.  But  mine seemed to work out to the finished dimensions.

  

 If you want the Rudder, I can send it to you I use LT2007 but can  save it to any version.

  

  

 Randall J  Hebert

  

 Randall J Hebert  & Associates, Inc

 Consulting Civil / Structural  Engineers

 Lafayette, Louisiana

 PH  337-261-1976      -      FX 337-261-1977

  



   From: owner-zenith-list-server(at)matronics.com  [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Curt  Thompson

Sent: Thursday, January 17, 2008 11:43 PM

To:  zenith-list(at)matronics.com

Subject: Autocad drawings for  CH701 form blocks?

 

 

Got  my CH701 plans in the mail today.  Yippee!! 

 

Are there autocad drawings  somewhere that I can use to make form blocks for the  CH701?  A draft-lady friend of mine says she can print them on a big  plotter and tweak them so they are full scale.   I’m thinking I could then glue the paper to wood to make the  form blocks. 

Curt 

Redmond,  WA – Building hours zero (0) 

[quote]



href="http://www.matronics.com/Navigator?Zenith-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/c

[b]

cookwithgas

Joined: 06 Nov 2007
Posts: 159

Posted: Fri Jan 18, 2008 6:23 am Post subject: Re: Autocad drawings for CH701 form blocks?

[quote="Curt.Thompson(at)verizon."]Got my CH701 plans in the mail today.  Yippee!!  



I’m thinking I could then glue the paper to wood to make the form blocks.  

Curt  

Redmond, WA – Building hours zero (0)  

       	  Quote: 	
		  [b] 	




You mean like this?

http://www.cooknwithgas.com/9_6_03_CuttingTemplates.jpg

http://www.cooknwithgas.com/9_6_03_RibTemplates.JPG

http://www.cooknwithgas.com/9_13_03_RibCollection.JPG



Curt - go one step further and draw the entire rib in AutoCadd and plot it out.  Then glue it to some thin material so you can lay it on the aluminum and mark exactly where to cut.  Also, drill all the holes in the aluminum right through the template - even the round corner holes where two cuts come together and you don't have to use a round file to file the intersection.  It is quick and easy.  My templates and forms have made 136 ribs to date and they are still in good shape.  (they are loaned out right now making two identical 601XL's).  



You have a good idea - stick with it. 



Scott Laughlin

www.cooknwithgas.com

601XL/Corvair Finished & Flying

Curt.Thompson(at)verizon.
Guest

Posted: Fri Jan 18, 2008 7:12 am Post subject: Autocad drawings for CH701 form blocks?

Scott,



Yes, I was thinking about making rib cutting templates like yours (yours are

for a CH601, correct?).  Could I make the templates a little thicker and use

a laminating cutter bit and router to cut the aluminum blanks?  I think I

saw that in the "Scratch Building Basics or Metal Aircraft" DVD.



Curt

Curt.Thompson(at)verizon.
Guest

Posted: Fri Jan 18, 2008 7:23 am Post subject: Autocad drawings for CH701 form blocks?

Randall,  

   

I have read somewhere that scaling a plot could be a problem.  I specifically asked my draft-lady friend if she could independently scale the X and Y axis after making a test plot.  She says yes.  I haven’t used autocad for at least 20 years but she said she would help.  Could you email me the files so I could look at them?  

   

Curt  

   

         

  

From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Randall J. Hebert

 Sent: Friday, January 18, 2008 5:21 AM

 To: zenith-list(at)matronics.com

 Subject: RE: Autocad drawings for CH701 form blocks?  

  

   

Curt  

I drew the rudder ribs and spars in AutoCAD but quickly found out that it was much easier to simply draw the pattern out on the wood directly.  

   

There is no way to assure your plotter will plot to the exact scale.  There can be distortion.  I didn't want to take the chance.  

   

Using a Sharpie doesn't give you much accuracy though.  But mine seemed to work out to the finished dimensions.  

   

If you want the Rudder, I can send it to you I use LT2007 but can save it to any version.  

   

   

[b]Randall J Hebert[/b]  

   

[b]Randall J Hebert & Associates, Inc[/b]  

Consulting Civil / Structural Engineers  

Lafayette,  Louisiana  

PH 337-261-1976      -     FX 337-261-1977    

   

  [quote] [b]

Curt.Thompson(at)verizon.
Guest

Posted: Fri Jan 18, 2008 7:33 am Post subject: Autocad drawings for CH701 form blocks?

Thanks Keith.  I can't believe I didn't run across your site before.  All

kinds of good info there.  I think the plotter I have access to will plot up

to 48" wide (and virtually infinite length).  I will double check the

measurements before using.



Curt

cookwithgas

Joined: 06 Nov 2007
Posts: 159

Posted: Fri Jan 18, 2008 9:16 am Post subject: Re: Autocad drawings for CH701 form blocks?

 	  Curt.Thompson(at)verizon. wrote: 	
		  Scott,



Yes, I was thinking about making rib cutting templates like yours (yours are

for a CH601, correct?).  Could I make the templates a little thicker and use

a laminating cutter bit and router to cut the aluminum blanks?



Curt 	




Curt:  I cut everything out with snips.  My good friend David Barth always laughed at me every time he saw a picture like this:



http://www.cooknwithgas.com/6_7_04_BottomFuse.JPG

or this:

http://www.cooknwithgas.com/7_9_04_FirewallCutting.JPG



That's because David is the "Olfa-king." I never could figure out how to use the Olfa knife.  



I enjoyed the careful work of cutting out a perfect part.  Plus, it gets you ready for all those awkward cuts you have to make later when everything is assembled and you have to change something! 



I think the router idea would make a huge mess but to each his own.  



Good luck,



Scott Laughlin

601XL/Corvair Finished & Flying

Did I just say Finished & Flying?  Let me pinch myself.

foxatgibsons(at)gmail.com
Guest

Posted: Fri Jan 18, 2008 11:10 am Post subject: Autocad drawings for CH701 form blocks?

hi all 

i'm as we speak drawing out the small parts on cad to use on my milling center 

it seems that some of the curve stn.data is developed for a batten or steel ruler other than that

it seems ok 

peter 

 

On Jan 18, 2008 7:28 AM, Curt Thompson <Curt.Thompson(at)verizon.net (Curt.Thompson(at)verizon.net)> wrote:

[quote] --> Zenith-List message posted by: "Curt Thompson" <Curt.Thompson(at)verizon.net (Curt.Thompson(at)verizon.net)>



Thanks Keith.  I can't believe I didn't run across your site before.  All 

kinds of good info there.  I think the plotter I have access to will plot up

to 48" wide (and virtually infinite length).  I will double check the

measurements before using.



Curt  [quote][b]

davids601xl(at)yahoo.com
Guest

Posted: Mon Jan 21, 2008 8:09 am Post subject: Autocad drawings for CH701 form blocks?

LOL  Olfa King?  Thanks for that Scott but a bit

overstated.  

I have used a router for cutting as stated here and it

works well when making many of the same parts blanks. 

You have to make a set of cutting blocks. Much like

the form blocks but with the added material for the

flanges. It takes a bit of planning since you will

want to use the same tooling holes in the cutting

blocks as you do in the form blocks.  

Then you can rough cut your parts blanks, stack 4 or

so in the cutting blocks sandwich and tighten them

down. Then use the router to trim off all the excess

material down to the edge of the cutting blocks. After

getting the cutting blocks set up,we made a complete

set of 701 nose rib blanks in just a few minutes this

way. And of course if you do a good job on your

cutting blocks and form blocks, the ribs will be

identical.  

We used a router table but you could just as easily

bolt the cutting blocks right through your table

making the routing very easy.  Always messy as hell

but very easy.  Eyewear is ESSENTIAL (and a hat unless

you like Al chips in your hair) and A curtain of some

sort for your cutting area will prevent getting Al

chips in every sq. mm of your workshop. 

This process of course make more sense if you are

making a project with a friend and can get more use

out of your cutting blocks. 

Just my 2 cents. 

David  

--- cookwithgas <cookwithgas(at)HOTMAIL.COM> wrote:

 	  Quote: 	

 <cookwithgas(at)hotmail.com>

 Curt.Thompson(at)verizon. wrote:

 > Scott,

 > 

 > Yes, I was thinking about making rib cutting

 templates like yours (yours are

 > for a CH601, correct?).  Could I make the

 templates a little thicker and use

 > a laminating cutter bit and router to cut the

 aluminum blanks?

 > 

 > Curt

 Curt:  I cut everything out with snips.  My good

 friend David Barth always laughed at me every time

 he saw a picture like this:

 http://www.cooknwithgas.com/6_7_04_BottomFuse.JPG

 or this:

http://www.cooknwithgas.com/7_9_04_FirewallCutting.JPG

 	  Quote: 	

 That's because David is the "Olfa-king." I never

 could figure out how to use the Olfa knife.  

 I enjoyed the careful work of cutting out a perfect

 part.  Plus, it gets you ready for all those awkward

 cuts you have to make later when everything is

 assembled and you have to change something! 

 I think the router idea would make a huge mess but

 to each his own.  

 Good luck,

 Scott Laughlin

 601XL/Corvair Finished & Flying

 Did I just say Finished & Flying?  Let me pinch

 myself.

David Barth

601 XL Plansbuilder  15% done?

Working on Wings

www.ch601.org

Looking for last minute shopping deals?

Curt.Thompson(at)verizon.
Guest

Posted: Mon Jan 21, 2008 9:00 am Post subject: Autocad drawings for CH701 form blocks?

I plan to set up a camping tent in my garage.  Then I'll do the router cuts

in the tent.  Then I'll shake out the filings when I'm done.



Curt



--

gboothe5(at)comcast.net
Guest

Posted: Mon Jan 21, 2008 9:14 am Post subject: Autocad drawings for CH701 form blocks?

I did my center section ribs all at once with this method...worked very

well! Don't forget to wear hearing protection so that you don't know what a

p.i.a you are to your neighbors (plausible deniability). 



Gary Boothe 

Cool, CA 

601 HDSTD, WW Conversion 90% done, 

Tail done, wings done, working on c-section

Do not archive

--

ifly4fun2(at)sbcglobal.ne
Guest

Posted: Mon Jan 21, 2008 9:40 am Post subject: Autocad drawings for CH701 form blocks?

Curt,

Excellent idea, thanks for sharing I'll do the same.



do not archive

Art

--- Curt Thompson <Curt.Thompson(at)verizon.net> wrote:



[quote] 

 

 I plan to set up a camping tent in my garage.  Then I'll do the router cuts

 in the tent.  Then I'll shake out the filings when I'm done.

 

 Curt

 

 --

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