HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Nov 24, 2002, 04:12 AM
Leave me alone!
Martin Hunter's Avatar
Kamloops, BC, Canada
Joined Feb 2002
15,106 Posts
Carbon rods vs balsa stringers

The subject says it all, really. If you're building a model that's former/stringer construction, and there's a lot of 1/16" sq or 3/32" sq stringers, how does carbon rod compare to this? Obviously it's MUCH stronger and thus you can go smaller, but how is the weight between the two?

Discuss!

Martin
Martin Hunter is offline Find More Posts by Martin Hunter
Reply With Quote
Sign up now
to remove ads between posts
Old Nov 24, 2002, 10:29 AM
DNA
registered user
DNA's Avatar
NE Ohio
Joined Jun 2001
3,311 Posts
I didn't replace all of the stringers with cf, just a couple of them.
Doubt it will make much diff one way or the other.
DNA is offline Find More Posts by DNA
Last edited by DNA; Nov 24, 2002 at 11:17 AM.
Reply With Quote
Old Nov 24, 2002, 11:57 AM
Registered User
Oak Harbor, Washington, United States
Joined Jan 2001
1,183 Posts
Good thought Martin. As a side benefit they would require no sanding to make the covering look good over them. Cost might be the limiting factor though.

Norm
Norm is offline Find More Posts by Norm
Reply With Quote
Old Nov 24, 2002, 09:44 PM
Registered User
ireland
Joined Apr 2001
250 Posts
carbon rod is heavy

I have built a few primitive box fuses from carbon rod

I use 1.5 mm epoxy board for bulk heads and 2 or three mm
carbon rod

usually glue with cyano followed up by epoxy

Then skin the lot with depron

Plastics are usualy 2.5 times heavier than plywoods and so are a lot heavier than balsa so it is nessary to reduse the size and amount of stringers drastically

It comes out about the same weight sometimes lighter but
use of eifell tower balsa or carbon stiffner diaganols makes them
probably 50 times more resistant to twist loads and probably 5 times sronger in most other loads

In crashes prone to ungluing but repairs are super rapid and can usualy fly again within cyno drying times

It hard to do very complex shapes so would not be keen to advise doing scale subjects untill you have built and crashed several more primitive box fuselage types first as the methods of construction require a lot more thinking and planninnig but when thats out of the way the building times are considerably faster than balsa

Fly low and fast and crash again

David in Ireland
thin wing is offline Find More Posts by thin wing
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion carbon fiber rods vs CF flat agriebel Pusher Prop Jet Models 8 May 03, 2007 11:45 AM
Carbon fiber rods vs.carbon fiber tubes. rcnutt Modeling Science 11 Oct 18, 2004 05:32 PM
Question Carbon strips vs. rods in EPP wings FTWORTH FLYER Foamies (Kits) 8 May 08, 2004 06:07 PM
Question Carbon strips vs. carbon rods in EPP wings FTWORTH FLYER Power Systems 1 May 04, 2004 03:42 PM
carbon vs. balsa weight kist2001 Power Systems 4 Aug 03, 2001 01:32 AM