John Wells
04-19-2007, 08:47 PM
I really like this one. It's powered by an e-flite 450 outrunner with a phoenix 25, and a polyquest 20C, 1500 ma 3cell battery. I'm a ProBro and hardcore 3D guy, and this yak is a really fun foamie.
There's just enough assembly to make you feel like you had to "build some" to get it in the air, and I like that. IMO, it's quite a bit more durable than the plate wing foamies that I've destroyed in the past :eek:
I used gorilla glue to install the spars and wing to fuse. Foam safe CA and a touch of epoxy elsewhere. The online assembly videos are great if you're the kind of person that doesn't get enough out of the book to feel comfortable about what you're doing.
I suggest "breaking in" the hinges by folding them both ways before gluing. I used that type (of hinge) a long time ago, and they lend themselves to this airframe very well. It didn't take much dragging the tail before I popped the elevator control horn loose from the elevator. A quick fix is to epoxy a small piece of thin ply to that area and screw the control horn to the plywood. Only a tiny bit of weight added and a lot of security!
I noticed that the aileron servos were twisting at extreme throws. When I get another Airfoilz plane, :) I'll install the aileron servos chordwise rather than spanwise, as that will stop the servo twist. Your flying style may not be as hard as mine, so you might not feel the need to change that.
The Yak will torque-roll, harrier, hover, high alpha knife-edge, and all of the fun 3D stuff. The wing has just enough thickness (airfoil) to separate it from the plate-wing kind of flying that the others do.
Great design and they should be around and popular for a long time. :)
JW
There's just enough assembly to make you feel like you had to "build some" to get it in the air, and I like that. IMO, it's quite a bit more durable than the plate wing foamies that I've destroyed in the past :eek:
I used gorilla glue to install the spars and wing to fuse. Foam safe CA and a touch of epoxy elsewhere. The online assembly videos are great if you're the kind of person that doesn't get enough out of the book to feel comfortable about what you're doing.
I suggest "breaking in" the hinges by folding them both ways before gluing. I used that type (of hinge) a long time ago, and they lend themselves to this airframe very well. It didn't take much dragging the tail before I popped the elevator control horn loose from the elevator. A quick fix is to epoxy a small piece of thin ply to that area and screw the control horn to the plywood. Only a tiny bit of weight added and a lot of security!
I noticed that the aileron servos were twisting at extreme throws. When I get another Airfoilz plane, :) I'll install the aileron servos chordwise rather than spanwise, as that will stop the servo twist. Your flying style may not be as hard as mine, so you might not feel the need to change that.
The Yak will torque-roll, harrier, hover, high alpha knife-edge, and all of the fun 3D stuff. The wing has just enough thickness (airfoil) to separate it from the plate-wing kind of flying that the others do.
Great design and they should be around and popular for a long time. :)
JW