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First foam rib plane design

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Old 06-30-2016, 06:45 AM
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flybyjohn
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Default First foam rib plane design

Just thought I would share an almost finished picture of my latest scratch build. I used the foam rib wing method for the first time on this plane. Not sure if it saved any time or weight but did make it easier to cut all the ribs for the double taper wing. The wing is using the Ultrasport airfoil and the fuse is just something I drew up. It has retracts and flaps. It weighs 8.2 lbs with everything except the fuel and cowls. It has two 6 oz fuel tanks and is powered by two ASP .36 engines. I am hoping for a total weight of 8.4 lbs with cowls and just over 9 lb full of fuel. That should put me just over 26 oz/ sq.ft. I have heard that the ultra sport handles the extra weight well so I hope since I am sharing the airfoil, it will fly the same. My thrust line is lower than the ultrasports so that might change the flight characteristics some.

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Old 07-03-2016, 08:56 AM
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Grantman69
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Nice work! Any under-construction pics?
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