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NACA profile foam cores

 
Old 11-06-2018, 10:23 AM
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Default NACA profile foam cores

I debated putting this here or in race prep, so feel free to move if necessary. Does anyone have good source for 70-72" wing cores? Flying Foam used to be the go-to, but have since sold the business with no explanation of who it was sold to or if its still in operation. I've checked a few other RC plan shops such as Eureka, and they only dealt with sizes up to 36" without offering them as two pieces. I'd prefer to buy vs. the DIY hot wire setup, so any help would be much appreciated.
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Old 11-06-2018, 12:49 PM
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So sad flying foam disappeared. Glad I was able to order the cores for my wing about a week before they disappeared.
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Old 11-06-2018, 01:41 PM
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Not what you are asking, but somewhat relevant and possibly interesting.

You could build a CNC router to mill out foam pieces. I've seen it done for massive scale fiberglass boat building when I was in college. I've thought about building a Mostly Printed CNC router to do this task but I don't have room nor the driving skills to utilize it at the moment. The MPCNC is made from 3D printed parts and metal conduit so the dimensions are easy to change. with a Harbor Freight Router, you could probably build on for less than $300. You could theoretically be more precise and make precise adjustments more easily.
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Old 11-06-2018, 02:25 PM
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Not only would that cost more than double the price of a pair of complete foam cores, but you'd then have to source the foam on top of it. Most of the sellers use a CNC hot wire setup for a much quicker and cleaner finish. But seeing as I'm looking at a one and done application for vacuum bagging, it really defeats the purpose.
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Old 04-03-2019, 05:29 PM
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What size and shape are you looking for?

I have a S1223 10" chord, 72" length foam core sitting here that I'm never going to use
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Old 04-04-2019, 07:12 AM
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Originally Posted by fmcokc View Post
What size and shape are you looking for?

I have a S1223 10" chord, 72" length foam core sitting here that I'm never going to use
Does it happen to have spar holes? Let me measure something this weekend and get back to you! I may have a secondary application that can use that.
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Old 04-04-2019, 07:36 AM
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That's funny, I have one of those too. S1223RTL, blue surfboard foam, 300 chord (12ins), single spar hole ~25mm/1in around 1/3 chord - still in box. I don't think my span is quite that wide though, and it is in two pieces too.

I bought a NASCAR wing so the chances of me building this one are on the wrong side of zero. But OK is much closer that AUS, so you are better dealing with fmc than me lol.
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Old 04-04-2019, 08:41 AM
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No spar hole and it’s not surfboard. I can’t remember exactly which foam it is.
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