Try-n-glide
Active member
Been working on and off on the Sport 250 for a couple weeks, just a few minutes here and there.
Comments so far:
- I actually do miss having instructions. Mostly it's pretty obvious if you've ever built a balsa plane, but a few things I sat around looking at for a while.
- The laser cutting and fit are excellent.
- Price was excellent.
One design change I made was inserting a double thickness spar out to rib no. 5. I built a BMJR Ugly 30 last year, and I was not happy with the stiffness of the wing with a very similar design (2x .125" spars).
Lack of instructions caused me some confusing on orientation of the plywood center sections. I used 1 each flat plywood pieces on the front and back of the wing.
Dry fit the fuse:
Starting to check weight and balance with electronics. I got a $6 ESC (20a) from Buddy RC because it was so cheap. However it appears to weigh 1/2oz more than a 12a ESC, and the plane feels nose heavy with a 450 3s battery in place. At this point I'm taking a little stop to consider putting the ESC in the "misc rc parts" pile and buying another one. I'd also like to see about replacing those metal machine screws/nuts on the motor mount with blind nuts and plastic screws. I think I could take .6oz out of the plane.
So far with all wood, electronics and batts:
In my mind I'd like this plane to be ready to fly at 7oz, and maybe I could make that happen in belly lander config if I can swap out the ESC and save a couple tenths in a few other spots.
Comments so far:
- I actually do miss having instructions. Mostly it's pretty obvious if you've ever built a balsa plane, but a few things I sat around looking at for a while.
- The laser cutting and fit are excellent.
- Price was excellent.
One design change I made was inserting a double thickness spar out to rib no. 5. I built a BMJR Ugly 30 last year, and I was not happy with the stiffness of the wing with a very similar design (2x .125" spars).
Lack of instructions caused me some confusing on orientation of the plywood center sections. I used 1 each flat plywood pieces on the front and back of the wing.
Dry fit the fuse:
Starting to check weight and balance with electronics. I got a $6 ESC (20a) from Buddy RC because it was so cheap. However it appears to weigh 1/2oz more than a 12a ESC, and the plane feels nose heavy with a 450 3s battery in place. At this point I'm taking a little stop to consider putting the ESC in the "misc rc parts" pile and buying another one. I'd also like to see about replacing those metal machine screws/nuts on the motor mount with blind nuts and plastic screws. I think I could take .6oz out of the plane.
So far with all wood, electronics and batts:
In my mind I'd like this plane to be ready to fly at 7oz, and maybe I could make that happen in belly lander config if I can swap out the ESC and save a couple tenths in a few other spots.