RE: 4*120 Biplane Kit Bash?
Well, here I am almost a year later and I'm ready to start this project. I've had a wing kit for over a year. Maybe even a year and a half. RCU member RETNAVYCDR hooked me up with a NIB 4*120 kit REALLY cheap. He bought it in the marketplace and gave it to me. FREE!! [X(]
Thanks Roger [sm=thumbs_up.gif]
I don't really like the fuse on the 4*120. It's too narrow and too short. I think I've had about 5 or 6 of the 4* planes in my short 10yrs in this hobby. I've got a new 4*40 ARF that was assembled just a few weeks ago and I built the kit a few years back. I've built the 4*120 kit back in 2005 and I think it was around 2000 when I built the 4*60 kit. Also had a 4*60 ARF somewhere along the way as well. None of them knife edge very well. Not enough side area IMO. I'd really like to widen the fuse about 2" and also make it about 2" taller. I'd also like to add about 5" to the length. Not really sure WHERE to add the length though. 5" behind the wing could lead to a tail heavy design. It might be prudent to add about 1" or 2" in front of the wing and 3" behind the wing. This whole new fuselage design would involve a 4x8 sheet of lite-ply and a bunch of cutting on the band saw. I'd have to enlarge every former inside the fuse. I don't think it will be that hard to enlarge the fuse, just a lot of time.
I've been looking at the plans and I think the top and bottom wings need to be spaced apart about 16" to make it look right. I would probably move the top wing forward about 4" and leave the bottom wing in the stock saddle.
I'm going to clip one bay off each wing tip. This will reduce the span to 72". That fits in the back of my Nissan truck. I did the math and I think that gives about 2140 square inches of wing area on this bipe. I'm anticipating a flying weight between 17-19 pounds. I have a Fox 52cc gasser collecting dust. That should provide very good sport power at my flying altitude of almost 6000'
I need to cover a Mojo 60 and clean the shop. Planning to get started in the next week or two. Hop aboard fellas!! There's another build thread coming to a computer monitor near you!! [8D]