I was just looking at a Mytho S 50e thread. That plane is the same size as my proposed 80% B.M. It is also rated for a "70 glow" engine. I assume a 70 YS. Now I'm very confused. Some say my 85% B.M. is to large for a 91 YS, yet the Mytho calls for a smaller engine and is the same size as the 80%. Ya I just said that twice

Would the Mytho with a 70 YS be under-powered??? I'm beginning to understand why there are so few pattern planes available in the smaller sizes.

Ken