I am fascinated reading the various contributions on my all-time favorite airplane, the Storch

About 15 years ago I built an eighth scale (70 in span) from Dennis Bryant plans. It used an Irvine 40 two-stroke. Despite an expert on the sticks, it never flew properly. It only seemed to fly on full throttle and nose 30-degrees up. Cut the throttle or down elevator would have it coming down fast.

I double cheecked CG and incidences and they were spot-on. It is still in my loft so and suggestions to correct this would be appreciated. What about a bigger engine and a more forward CG?

More recently I acquired a sixth scale Svenson kit. Before I could start on it, I came across a ready built one. However when I got it home, I was horrified to find it weighed 15 pounds and was only powered by a Magnum 90 - the no longer made UK four stroke engine - not the current Taiwan motor

I didn't meet the original owner so I can,t find out about its flying performance. Reducing weight will be difficult short of stripping the covering off and drilling the airframe. Perhaps I shouldnt worry too much but just fit a more powerful motor - say a modern 120 fourstroke.

I want to get it ready for the spring so any suggestions would be welcome