EZ Power Pack Pizza Box

[BadAir]

Making the "canopy" much bigger would add more rudder effect, but I suspect it steers like a cow because that's how differential motors spool up and down, takes a second to get noticeable thrust changes then and another heartbeat or two to have it start to respond.... Better to have more distance between them like @AIRFORGE said.

I am impressed with the design.

I suspect flying indoors in a gym that wasn't quite large enough also contributed to the impression. I was able to lap the EZ Canard when I avoided all the obstacles. This not so much.

The motors are only 5.5" apart. Probably because they scaled it from another plane.

 

[BadAir]

Going to have them build another Penta-plane. The janitor threw the last one away with about $30 worth of supplies. Thought it was trash.

 

[L Edge]

@BadAir

Since you are locked into using cardboard, I will offer you a new conceptual approach to designing airplanes. Reason being, is you are locked using the EZ system, so the max thrust is fixed. As I told you before, weight is a big factor- best below 40 gr, workable for 41 to about 60(degrades exponential and another factor is frontal area) and if plane reaches 70, not much room for climb or glide slope(my Bipe). You exhibited that with the last plane including the large vertical(yaw component- that"s why differential is draggy) component. It had to fly fast just to stay level and overcome drag.

Potential Approach. Look into additional ways of lift. How about the investigation of the Kline-Fogleman airfoil? Or start cutting cardboard strips and use things like plastic wrap to make an airfoil? Add Bixler drilling out holes in bottom of airfoil(video) to lighten. Many more suggestions.

Or better yet, since kids have different capabilities and you want them to succeed, still offer Adam's board as an option.

 

[BadAir]

Meet Geoff. Geoff is seriously overweight. Don't be like Geoff. Nobody likes Geoff.

Vertical stabilizer temporarily reattached for pictures. I like how they attempted an airfoil.

 

[Mr Man]

Meet Geoff. Geoff is seriously overweight. Don't be like Geoff. Nobody likes Geoff.

Vertical stabilizer temporarily reattached for pictures. I like how they attempted an airfoil.
View attachment 248398 View attachment 248399

Haha,😅 does it fly?

 

[BadAir]

Haha,😅 does it fly?

Indeed it does. It flys. It could be improved, but not sure it is worth it.

 

[Houndpup Rc]

Indeed it does. It flys. It could be improved, but not sure it is worth it.

Got a couple EZ kits for two young flyers for there birthday and finally got out today to try them but unfortunately the wind was high and it was soooo cold that the batteries were acting up.(14 felt like 1degree🥶I was not made for that cold. lol) Maybe tomorrow.

 

[Piotrsko]

At this size and project mission the airfoil profile is immaterial to the task, you're using only the bottom side. This is one of those strange places where traditional aero engineering won't help beacuse you operate in an undefined, not measurable portion of the flight envelope. Does it harm much when they experiment like that?

 

[Foamforce]

Skeltonize! You can drop half the weight of that airframe by just cutting out the interior of each wing, leaving 1” or less around the perimeter, and re-covering with packing tape. With a sharp knife and a safety lecture (cut away from yourself!), those kids will have Geoff flying in just a few minutes.

 

[BadAir]

Skeltonize! You can drop half the weight of that airframe by just cutting out the interior of each wing, leaving 1” or less around the perimeter, and re-covering with packing tape. With a sharp knife and a safety lecture (cut away from yourself!), those kids will have Geoff flying in just a few minutes.

We'll give it a shot on Friday.

 

[BadAir]

The whole thing might just be moot. My finance people have been unable to contact anyone at FliteTest and my own contact form has gone unanswered.

 

[bisco]

It can be hit or miss for some reason

 

[AIRFORGE]

The whole thing might just be moot. My finance people have been unable to contact anyone at FliteTest and my own contact form has gone unanswered.

I have tried contacting FT several times in the last 2 months and have had no replies as yet. That is unusual in my experience with FT. I can only hope everything is ok.

 

[BadAir]

I have tried contacting FT several times in the last 2 months and have had no replies as yet. That is unusual in my experience with FT. I can only hope everything is ok.

Glad I haven't promised anything to any kids.

 

[AIRFORGE]

Glad I haven't promised anything to any kids.

Maybe try posting in the Flite Test Fans group on Facebook. Josh Bixler is there frequently.

 

[BadAir]

Contact has been established and it looks like we will be proceeding. The original Hammerhead Eagle i-Thrust has been destroyed in testing. RIP So I spent 10 minutes throwing together another one. This one has larger 816 motors that I fitted with 75mm props. 58 grams or so.
The little bit of additional power is huge. It is difference between having to work to keep it flying and having fun.

Pics of Hammerhead Eagle i-Thrust 2.1:

 

[Mr Man]

Contact has been established and it looks like we will be proceeding. The original Hammerhead Eagle i-Thrust has been destroyed in testing. RIP So I spent 10 minutes throwing together another one. This one has larger 816 motors that I fitted with 75mm props. 58 grams or so.
The little bit of additional power is huge. It is difference between having to work to keep it flying and having fun.

Very nice! Glad to hear it’s working out!

 

[BadAir]

Had a couple kids stay and finish this one.
Before testing it had names like Wren, Sparrow and Nico?

After testing it goes by Insufficient Wing Area Jones and the Corkscrew of Doom.

 

[BadAir]

I think the pics are working now.

 

[Mr Man]

I think the pics are working now.

Yup!