Vladimir,
I dabbled a little in making laminated spars for Coupe d’Hiver so it may not be in your league. I think it was probably in the early 1990s that some carbon sheet, 0.003/0.004 thick became available on the English market. The carbon appeared to be very thin strips joined side by side and mounted on a brown paper backing. I cut a strip of carbon about 0.5” wide, leaving the paper backing in place, cleaned the other side and then glued it, with contact adhesive (‘Evostick’), to the balsa sheet, which was about 0.1” thick. This was stripped with a normal, home-made, balsa stripper and the backing paper was then removed.
The big trouble was that if the spars flexed the carbon would ‘pop off’ the balsa and the popped off pimples would need reattaching with cyano. The problem could have been wrong glue or poor technique but I realised that it was good for the wing spars to flex upwards under load and the spruce spars that I was already using were better than carbon capped balsa for a Coupe. I hope this is of some help if only in a negative way.
John Barker - England
From: Indoor_Construction_at_yahoogroups.com [mailto:Indoor_Construction_at_yahoogroups.com]
Sent: 11 January 2015 23:11
To: Indoor_Construction_at_yahoogroups.com
Subject: [Indoor_Construction] Carbon capped spars
Dear All
Has anyoneaminated unidirectional carbon on sheet and then sliced wing spars producing capped spars top and bottom with carbon? If so please share details.
Vladimir Linardic
Received on Mon Jan 12 2015 - 09:09:02 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:48 CET