HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Dec 01, 2003, 08:13 PM
Registered User
Campbell, CA.
Joined Nov 2003
11 Posts
Question
question about making wing ribs from scratch

I'm going to build my first "from scratch" sailplane. My question is: Is there an easy (or easier) way to cut the wing ribs out of stock Balsa than to just cut close and sand one by one?
Do you guys have any special method for precutting all the pieces?
Is there some type of affordable lazer cutter?
Please don't laugh too hard while reading this, I figured I'd at least ask before going though my own little personal Hell.
Thanks!
Nedro is offline Find More Posts by Nedro
Reply With Quote
Sign up now
to remove ads between posts
Old Dec 01, 2003, 08:19 PM
Registered User
vintage1's Avatar
East Anglia, UK
Joined Sep 2002
29,703 Posts
(i) make a metal or hardwood or plastic laminate template and cut tyme all using that.

(ii) make two of teh above, drill a coulple ogf holes through them, and sandwich about an inch of rib blanks between, carve and sand em all in one go. Use file to make spar slots

(iii) build yoir own CNC machine and use that instead.

(iv) take teh drawing to someone who has a CNC machine.

(v) give up and buy an ARTF.
vintage1 is offline Find More Posts by vintage1
Reply With Quote
Old Dec 01, 2003, 08:41 PM
Registered User
Campbell, CA.
Joined Nov 2003
11 Posts
The rib sandwich sounds good (and tastie also). And although I live in the Silicon (not Silicone) Valley, I don't know anyone who has a CNC machine laying around so that's out of the question. And for the price of an ARTF, I probably could build a CNC of my own.
So, as I suspected, the only way to do it is just to do it.
I won't be starting for a couple of weeks, so if anyone else has any words of wisdom, they would be greatly appreciated.
Nedro is offline Find More Posts by Nedro
Reply With Quote
Old Dec 02, 2003, 12:36 AM
Love my Pike Superior!
averen's Avatar
Austin, TX
Joined Jul 2003
1,710 Posts
If you have the plans in autocad form or can get them there you might want to check out
http://www.laserartco.com/

Averen.
averen is offline Find More Posts by averen
Reply With Quote
Old Dec 02, 2003, 04:02 AM
Registered User
N. Staffs, UK
Joined Jan 1997
5,654 Posts
The sandwich method has been used for many years and works really well. It's very quick and easy cutting out rectangular blanks and shaping them to templates. It's a bit wasteful of wood though, you can get more ribs from a sheet if you lay them out properly.

But basically you're right, at some point you'll either have to do some work or pay someone else to do it for you .

Steve
steve lewin is offline Find More Posts by steve lewin
Reply With Quote
Old Dec 02, 2003, 04:11 AM
Single-task at best...
tim hooper's Avatar
Telford, UK
Joined Feb 2000
7,500 Posts
Nedro,

If all the ribs are the same, I'll cut a master from 1/16 ply using scissors, harden the edge with a little cyano, and simply use it as a template to cut around.

Easy peasy.

tim
tim hooper is offline Find More Posts by tim hooper
Reply With Quote
Old Dec 02, 2003, 04:44 AM
Will work for planes
omega blood's Avatar
Fullerton, California, United States
Joined Jan 2002
1,783 Posts
Hobby people has some gliders for reasonable pricess. I hear the spirit is a very good res plane.
http://www.hobbypeople.net/prdcls/acgkit01.asp
omega blood is offline Find More Posts by omega blood
Reply With Quote
Old Dec 02, 2003, 07:57 AM
Rip-N-Burn's Avatar
Chandler Williams, Arizona, United States
Joined Nov 2002
1,239 Posts
My technique
Rip-N-Burn is offline Find More Posts by Rip-N-Burn
Reply With Quote
Old Dec 02, 2003, 12:24 PM
Registered User
Campbell, CA.
Joined Nov 2003
11 Posts
Rip-n-burn, I knew there had to be a thread on this subject already. Thank you for the link.
Maybe that thread should be moved over here?
Nedro is offline Find More Posts by Nedro
Reply With Quote
Old Dec 03, 2003, 07:33 AM
AndyKunz's Avatar
Illinois
Joined Sep 2001
24,751 Posts
Robins View Productions (610-746-0106) has videos on Bob Hunt's "Lost Foam" process. You would not believe how light he can build a strong wing.

Andy
AndyKunz is offline Find More Posts by AndyKunz
Site Sponsor
Reply With Quote
Old Dec 08, 2003, 11:11 PM
Dismembered Member...
arx_n_sparx's Avatar
Niagara Falls/Toronto area
Joined Dec 2003
4,536 Posts
I make one template out of 1/32" ply, harden the edges with cyano, and then poke a thumtack thru at the front and the back. Drive the template/tacks thru the balsa into a cork board, and have at it with an exacto knife. It only does one rib at a time, but I can flip the template over to "nest" the cutouts to save wood. It takes more time to make the template than to cut the ribs!
arx_n_sparx is offline Find More Posts by arx_n_sparx
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
A question about making wing ribs which are not parallel. Iso Octane The Builders Workshop 8 May 14, 2005 03:40 PM
Question about delta wing (under camber) Ming Foamies (Kits) 16 Aug 22, 2003 05:52 PM
Question about delta wing (under camber) Ming Slope 4 Aug 21, 2003 07:19 PM
question about making a 2s2p li-po pack? Kwesdog Batteries and Chargers 4 Jun 09, 2003 05:48 PM