Here are a few pics of my Stinger .10, I have modified quite a few things to make it more fun. I want it lighter than normal so I have lightened it a few ways and wonder how many foam squares could I safely cut out of between the cap strips starting from the wingtip and going in? There are no spars in the wing, only the partial sheeting you see and a balsa LE and TE. Thanks and here it is...

Brian

And a couple of how it sits right now...
Who knows what engine I need to hover this at half throttle?? [>:]

What are the specs of the plane? How much does it weigh complete with radio but without an engine?

I bought that little bird about 7 years ago thinking it was perfect for my .10 but it came out too heavy and flew extremely sluggish. After a couple months not enjoying it that much I did exactly what you have in mind. I sold the old airplane and ordered me a new kit. I removed practically all the foam of the wings. Using a hotwire cutter I left 1/2" ribs and a 3/4" center spar section of the original foam. Then I sheeted the whole wing. Got rid off practically all the plywood except the firewall and did some modifications to the landing gear mounting block.
It flew beautifully, lots of speed with just an OS .10 FP......not enough to hover though.
Have fun!

O.S. .15 CV-A maybe?