FT A-10 Twin 80mm EDF

[dberg97]

I spent the last two weeks designing a twin 80mm EDF mount for the FT A-10. Instead of trying to attach the entire EDF (housing and all), I designed the 3d printed mounts to actually be the housing and mounted the fan and motor from the XFly 80mm EDFs from Amazon. The base of the mount fits exactly in the location and FT plan slots. I did add additional foam supports in front of and behind the mount location. Having converted a previous FT A-10 to twin 70mm, I knew the horizontal stab required a spar, full length doubling of the foam, and dual elevator servos. To get CG, the 6s needs to be all the way forward in the nose. I had to modify the battery hatch to open further forward in the nose. Maiden hasn’t occurred due to return of winter weather, but it lifts it’s own weight holding it vertically.

 

[Mr Man]

I spent the last two weeks designing a twin 80mm EDF mount for the FT A-10. Instead of trying to attach the entire EDF (housing and all), I designed the 3d printed mounts to actually be the housing and mounted the fan and motor from the XFly 80mm EDFs from Amazon. The base of the mount fits exactly in the location and FT plan slots. I did add additional foam supports in front of and behind the mount location. Having converted a previous FT A-10 to twin 70mm, I knew the horizontal stab required a spar, full length doubling of the foam, and dual elevator servos. To get CG, the 6s needs to be all the way forward in the nose. I had to modify the battery hatch to open further forward in the nose. Maiden hasn’t occurred due to return of winter weather, but it lifts it’s own weight holding it vertically.

Looks Amazing!!

 

[Houndpup Rc]

I spent the last two weeks designing a twin 80mm EDF mount for the FT A-10. Instead of trying to attach the entire EDF (housing and all), I designed the 3d printed mounts to actually be the housing and mounted the fan and motor from the XFly 80mm EDFs from Amazon. The base of the mount fits exactly in the location and FT plan slots. I did add additional foam supports in front of and behind the mount location. Having converted a previous FT A-10 to twin 70mm, I knew the horizontal stab required a spar, full length doubling of the foam, and dual elevator servos. To get CG, the 6s needs to be all the way forward in the nose. I had to modify the battery hatch to open further forward in the nose. Maiden hasn’t occurred due to return of winter weather, but it lifts it’s own weight holding it vertically.

Awesome! The A - 10 is my other favorite jet!

 

[Mr Man]

Awesome! The A - 10 is my other favorite jet!

Diddo.

 

[ScottInIowa]

Did you ever fly this??

 

[dberg97]

Did you ever fly this??

I did. It flew well...until it didn't. The reason it didn't was 100% builder error. I forgot to glue in one of the aileron servos and it worked itself out during flight. When it did, it jammed the aileron and caused an irrecoverable flat spin. While it was flying it looked and sounded awesome. If I was to build it again, I would increase the wing chord length a couple inches to provide a bit more lift and decrease the wing loading because the twin 80s, the 120amp ESC, and a 6s Lipo add significantly more weight than the plane is originally designed to handle. It pushed the limit of hand launch ability with the originally sized wing.

 

[ScottInIowa]

I did. It flew well...until it didn't. The reason it didn't was 100% builder error. I forgot to glue in one of the aileron servos and it worked itself out during flight. When it did, it jammed the aileron and caused an irrecoverable flat spin. While it was flying it looked and sounded awesome. If I was to build it again, I would increase the wing chord length a couple inches to provide a bit more lift and decrease the wing loading because the twin 80s, the 120amp ESC, and a 6s Lipo add significantly more weight than the plane is originally designed to handle. It pushed the limit of hand launch ability with the originally sized wing.

Thanks for the update! I'm working on a BDF A10 now. Trying to keep it super light

 

[Houndpup Rc]

I did. It flew well...until it didn't. The reason it didn't was 100% builder error. I forgot to glue in one of the aileron servos and it worked itself out during flight. When it did, it jammed the aileron and caused an irrecoverable flat spin. While it was flying it looked and sounded awesome. If I was to build it again, I would increase the wing chord length a couple inches to provide a bit more lift and decrease the wing loading because the twin 80s, the 120amp ESC, and a 6s Lipo add significantly more weight than the plane is originally designed to handle. It pushed the limit of hand launch ability with the originally sized wing.

I hope my 64mm EDF's will be powerful enough for mine...

 

[dberg97]

I don't like the Flycolor EDFs and ESCs I have off of Amazon. They are heavy and underpowered. I had some other off brand 70mms that I was overdriving on 6s and they produced almost as much thrust at much lower overall weight. Every plane I've made with the 80s has been underwhelming on the thrust vs weight. Good quality EDFs make a big difference.

 

[Houndpup Rc]

I don't like the Flycolor EDFs and ESCs I have off of Amazon. They are heavy and underpowered. I had some other off brand 70mms that I was overdriving on 6s and they produced almost as much thrust at much lower overall weight. Every plane I've made with the 80s has been underwhelming on the thrust vs weight. Good quality EDFs make a big difference.

Hmmm, I just have a couple Powerfun ones off Amazon....

 

[dberg97]

Hmmm, I just have a couple Powerfun ones off Amazon....

I actually think the 70s that I was overdriving were Powerfuns. If so, they were fantastic while they lasted.

 

[Houndpup Rc]

I actually think the 70s that I was overdriving were Powerfuns. If so, they were fantastic while they lasted.

My 64's can run on 4s, but that's pushing their limits I think....

 

[dberg97]

My 64's can run on 4s, but that's pushing their limits I think....

Yep, mine too. I knew the risk and it was fun for a good while🤣

 

[Houndpup Rc]

Yep, mine too. I knew the risk and it was fun for a good while🤣