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Ok... I'm returning to the US this July, and I'm planning on picking up a Binder Design Excel. I'm thinking that I can make it with removable fins to allow for easier packing and travel. So, to that end, I'm planning on making internal walls that are mounted to a removable motor mount section that are drilled to allow the fins to be screwed in place, or removed. Aesthetically, I like the look of fillets, and I know that they reduce drag. However, it is not my intention to build the highest flying Excel, ever made, just one that can do the job (Go up, and come down safely).
There are three ideas when it comes to fillets.
Clearly, forgetting about them is the easiest, but is it the wisest? Option 2 is the one I'm leaning towards. Using a nonstick surface (wax paper) attached to the airframe, construct the fillets on the fins while the fins are attached to the body tube. Option 3 is the same as option 2, except the fins are wax papered instead of the airframe.
If I went with them, I think option 2 would be easiest to repair should the need arise (think banging around in a suitcase), would be stronger, and would look better overall (no weird line/shadow) on the fin above the joint. Also it would be easier to pack.
Thoughts?
There are three ideas when it comes to fillets.
- Forget them altogether.
- Fillets attached to the fins, but not to the airframe.
- Fillets attached to the airframe, but not to the fins.
Clearly, forgetting about them is the easiest, but is it the wisest? Option 2 is the one I'm leaning towards. Using a nonstick surface (wax paper) attached to the airframe, construct the fillets on the fins while the fins are attached to the body tube. Option 3 is the same as option 2, except the fins are wax papered instead of the airframe.
If I went with them, I think option 2 would be easiest to repair should the need arise (think banging around in a suitcase), would be stronger, and would look better overall (no weird line/shadow) on the fin above the joint. Also it would be easier to pack.
Thoughts?