slk23 Posted June 1, 2021 Share Posted June 1, 2021 (edited) I'm planning on making molds from my current, somewhat heavy engine cowlings and making new ones with carbon fiber. Does anyone have advice on the number of plies of 5.7 oz. CF cloth are needed to get sufficient strength? I'm using the U.S. Composites 635 epoxy. Three plies would seem enough, but I'll go with two if I can. TIA. Edited June 1, 2021 by slk23 Quote Link to comment Share on other sites More sharing options...
Voidhawk9 Posted June 2, 2021 Share Posted June 2, 2021 (edited) Just enough to maintain it's shape, right? It's just a fairing? Use a bit or core in select areas for additional stiffness as required. I believe some folks have used straws (with a lay of cloth over them) to add stiffness. Edited June 2, 2021 by Voidhawk9 Quote Aerocanard (modified) SN:ACPB-0226 (Chapter 8) Canardspeed.com (my build log and more; usually lags behind actual progress)Flight simulator (X-plane) flight model master: X-Aerodynamics (GMT+12) Link to comment Share on other sites More sharing options...
Kent Ashton Posted June 2, 2021 Share Posted June 2, 2021 Search here for CARBON and FIBER and COWL and LAYERS. I saw several posts but didn't have time to read them. Be aware that to combine all four search terms, you have to wait 15 seconds, select the option " CARBON and FIBER and COWL and LAYERS" search again. A Google Verbatim search ( https://www.google.com/webhp?tbs=li:1 ) for the same terms will also bring up a lot of posts. Do us a favor and report what you learned Quote -KentCozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold Link to comment Share on other sites More sharing options...
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