Wing supports

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Wing supports

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macgtech	macgtech posted 11 Years Ago Topic Details
Group: Forum Members Posts: 20, Visits: 102	We are looking at creating some wing supports, which look something a bit like this: This seems relatively straightforward by resin infusion - basically a flat sheet with the shape cut out, But I have a couple of questions: 1. Since these are structural members, they will be potentially supporting a fair amount of force so need to be strong so they do not buckle - to avoid this I was looking at making them around 8mm thick - is it possible to use two layers of 3mm Soric on top of each other, with CF either side? The other option which maybe easier is the 10mm 3D core, which would make them slightly thicker again - which I don't think will be an issue. 2. If I use the above approach to get the thickness (and therefore stiffness) that I require, and cut out the shape - what is the best way to finish the cut edge? Finishing the cut edge of anything that uses coremat is something that I have struggled with, especially with thicker (used 3mm Soric so far) section; any advice would be welcome. Thanks MacG Racing Ltd., UK based Motorsport Racing Team - follow us on Twitter and on Facebook Edited 11 Years Ago by macgtech
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ajb100	ajb100 posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 346, Visits: 4.4K	It is possible to double up on soric but it gets pretty heavy fast due to the resin uptake. 10mm 3d core or foam would be much better. For wing supports like this, I cut the foam to the shape it's going to be but go 10mm smaller on all edges, then Using a permagrit block chamfer all the edges to a near point with a pretty steep angle. Lay the first layer/s of carbon on your flat surface and place the foam on top. One thing I do that probably does nothing is then run a tow or 2 of carbon around the foam to prevent the carbon bringing on the next step and making air pockets at the edge of the foam. Lay the last layer/s of carbon over the whole thing and infuse. When you come to trim it up, you can easily see where the foam is and cut 10mm away from the edge giving you the final size and leaves you with a more aerodynamic finish. Alternatively, make a flat sheet the required thickness, cut out your shape and then dig out some of the core at the edges, just go a few mm deep. Make a resin past with resin, micro balloons and talc (talc optional) and smooth into the edge. This will however give you a thick square edge which isn't the best shape for cutting through the air
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macgtech	macgtech posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 20, Visits: 102	Excellent, thank you. Will give it a go and see how we get on! MacG Racing Ltd., UK based Motorsport Racing Team - follow us on Twitter and on Facebook
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