800 Series | nnSpitfire

[Houndpup Rc]

I kinda want to try doing that someday!

 

[Mr Man]

Yup, just got to the 2808 motor thread he started.

 

[peytonninja]

@nerdnic I'm currently building the spitfire, and I had a question about the spar. I am planning on building it to match the "Speed" category of electronics. Would you recommend using an aluminum spar? Or would the basswood one work fine. Only reason I am asking is you mentioned in the speedwing build video that aluminum was an option. Thanks in advance, enjoying the build so far!

 

[Houndpup Rc]

@nerdnic I'm currently building the spitfire, and I had a question about the spar. I am planning on building it to match the "Speed" category of electronics. Would you recommend using an aluminum spar? Or would the basswood one work fine. Only reason I am asking is you mentioned in the speedwing build video that aluminum was an option. Thanks in advance, enjoying the build so far!

I highly recommend using the aluminum spar...I tried using wood once and that didn't end so well! 😂 I get my aluminum at Ace Hardware BTW

 

[peytonninja]

I highly recommend using the aluminum spar...I tried using wood once and that didn't end so well! 😂 I get my aluminum at Ace Hardware BTW

Thanks! Will do!

 

[Houndpup Rc]

Thanks! Will do!

Yup!

 

[andrej]

What kind of paper is used to cover the upper part of the fuselage? Does it sag during flight under the airflow, does it hold its shape? I have cardboard, but it's not flexible and heavy... Actually, I used 3mm Depron before.

And those things between the wing and the fuselage, are they more for aesthetics or do they serve an aerodynamic function? I made the wing removable with elastic bands, so it's impossible to glue those fairings in place in my case.

 

[Mr Man]

What kind of paper is used to cover the upper part of the fuselage? Does it sag during flight under the airflow, does it hold its shape? I have cardboard, but it's not flexible and heavy... Actually, I used 3mm Depron before.

And those things between the wing and the fuselage, are they more for aesthetics or do they serve an aerodynamic function? I made the wing removable with elastic bands, so it's impossible to glue those fairings in place in my case.

They are there for aerodynamics, are the plane faster. (Well, I guess for looks too though 😂). But the y use poster board, AKA card stock.

 

[andrej]

I flew my Spitfire 800 today. It's a bit fiddly to control. I didn't really like it. There was a bit of a breeze. Maybe the center of gravity is a bit forward, I think it's about 4.5 cm from the leading edge. It's also quite light, about 300 grams.

 

[Houndpup Rc]

I flew my Spitfire 800 today. It's a bit fiddly to control. I didn't really like it. There was a bit of a breeze. Maybe the center of gravity is a bit forward, I think it's about 4.5 cm from the leading edge. It's also quite light, about 300 grams.

Maybe add some more expo to your controls...

 

[Mr Man]

I flew my Spitfire 800 today. It's a bit fiddly to control. I didn't really like it. There was a bit of a breeze. Maybe the center of gravity is a bit forward, I think it's about 4.5 cm from the leading edge. It's also quite light, about 300 grams.

300 grams! That’s crazy light! 😮


It might;Vw been tail heavy, and needed expo like Houndpup said.

 

[andrej]

300 grams! That’s crazy light! 😮


It might;Vw been tail heavy, and needed expo like Houndpup said.

I use blue 5.5mm foam, which makes it much lighter. Plywood slats are used in the fuselage for reinforcement. The 2205 motor and 3S 850mAh battery are also lightweight.
I think such light weight is actually a bad thing. IMHO, a more powerful motor and a larger battery are needed.

 

[Houndpup Rc]

I use blue 5.5mm foam, which makes it much lighter. Plywood slats are used in the fuselage for reinforcement. The 2205 motor and 3S 850mAh battery are also lightweight.
I think such light weight is actually a bad thing. IMHO, a more powerful motor and a larger battery are needed.

Try adding a 3536 1800kv motor and will will have plenty of power! 😂

 

[Mr Man]

I use blue 5.5mm foam, which makes it much lighter. Plywood slats are used in the fuselage for reinforcement. The 2205 motor and 3S 850mAh battery are also lightweight.
I think such light weight is actually a bad thing. IMHO, a more powerful motor and a larger battery are needed.

Yup, I experienced this with my ft spitfire that I nodded to have a speedwing, it flew amazing when it had the heavy power system (3548 motor, 100a esc). But when I switched to a power pack C, it didn’t fly as well.

 

[andrej]

Hmm, my Spitfire still flies unstable without stabilization. I think there was a geometry error somewhere during the build process. I should also try moving the CoG forward a bit.
I also have a straight wing, without a didrehal. However, I also built an nnchipmunk without a didrehal, and it flew great. I probably built three nn-mig3s, two nnchipmunks, and one nnspitfire. Only one nnchipmunk and one nnmig3 flew really well. Apparently, I'm not a very good aircraft builder.