Gary Byrum
Overstable By Design
I guess it all depends on your mood but lately I have been up scaling some kit designs and this is another in that league. I have never built an Estes Gyroc before and I have some new angles I hadn't seen in other build threads. Maybe it will answer a few of the questions asked about them darn hinges! We'll get to that later.
First off, I am going with an airframe BT 55 and a 24mm rear ejection motor mount with it's own streamers. There's good reason for this too. Pictured below is the airframe, motor mount with 3 fiber centering rings, a 50/55 bulk CR (which is going to be the motor mount block) The block of balsa wood in the clamps will be the nose cone. I glue hard cardboard to both sides to secure the wood in the lathe so it doesn't chew up the wood. Just ignore that down scale Cricket/up scale Swift...take your pick. It's not important. That motor mount block was hollowed out a bit on the inside to allow the motor mount to pass through easily but block the MM from any forward access, Everything fits like a glove with a very small recess of the aft ring barely inside the airframe.
First off, I am going with an airframe BT 55 and a 24mm rear ejection motor mount with it's own streamers. There's good reason for this too. Pictured below is the airframe, motor mount with 3 fiber centering rings, a 50/55 bulk CR (which is going to be the motor mount block) The block of balsa wood in the clamps will be the nose cone. I glue hard cardboard to both sides to secure the wood in the lathe so it doesn't chew up the wood. Just ignore that down scale Cricket/up scale Swift...take your pick. It's not important. That motor mount block was hollowed out a bit on the inside to allow the motor mount to pass through easily but block the MM from any forward access, Everything fits like a glove with a very small recess of the aft ring barely inside the airframe.