Unofficial ## 2025 "build-ruary" of EZ Pac planes"

[L Edge]

Here is all my lists of EZ Pac V2 planes that I have built in the past year and put together in a group showing the design and building of the last two which I did today.

1) Delta-- Has a dihedral and can handle the winds nicely. Builds in 2 hours.
2) B2-Spirit -- Has no vertical surfaces and with about 4 degrees of reflex, really stable. Builds in 1 1/2 hour.
3) Flying Wing-- No endplates, with "stablizer", can kick ass in the wind. Slowest wing I have ever flown. Had a "flyaway" and lost in trees. About 5 hours.
4) Bipe-- On the large size(69 grams), it has to by flown careful to stay aloft. About 7 hours.
5) Circle-- Weird looking when it is flying around. Don't end up with wrinkles, it just keeps rolling. 2 hours for build.
6) Bobcat--Twin boom and can really move. 3 hours.

Design of a:
7) A forward swept wing-- See what high alpha and stall looks like.
8) A refined "Circle"-- lot lighter and larger dihedral. Will see what happens.
These were done in Febuary.

Played around with angles of FSW to get the CG of model where I wanted to and cut out Adams board pattern. Ended up with weight of 21.3 grams and area of 126 square inches. Need to think of my next steps to keep weight down and strengthen nose.

Back in 2006, FFF(fanfoldfoam) was the product which had films on the top and bottom for strength and lightness. So the CIRCLE dihedral was increased to 35 degrees to make a nice tail. Made new jig. So easy to make, after cutting out the circle, cut 1/2 smaller radius and then 3 slice lines and your ready to glue.

Put color tape on it(paint skills suck) and FFF weighs when glued . It weighed 17.8 grams.

Used jig and mobile table to make sure angles are same (nose and tail) and flat areas are the same angle.
This model is much lighter and the strength is a lot stronger being FFF.

All for today.

 

[L Edge]

Finished off installing electronics, doing CG balancing at 1/2 throttle, and using battery to trim going straight. Used cellar and "catch system" and had repeatable 42 ft throws in cellar. No dings at all. The hardest now is coming up with an appropriate name for this one. Using cardboard may work, but will be heavy.

Will have to wait for storm goes out to sea to see what it can do outside, calm and when wind blows.

It's name is now called "CIRQUE"
Now to design the FSW.

 

[AIRFORGE]

Finished off installing electronics, doing CG balancing at 1/2 throttle, and using battery to trim going straight. Used cellar and "catch system" and had repeatable 42 ft throws in cellar. No dings at all. The hardest now is coming up with an appropriate name for this one. Using cardboard may work, but will be heavy.

Will have to wait for storm goes out to sea to see what it can do outside, calm and when wind blows.

View attachment 248302

Now to design the FSW.

Nice! Sort of has the shape of a bottle opener. How wide/long is it?

 

[L Edge]

Now onto the Forward Swept Wing.
Trying to keep the weight down, I ended up with a 52.8 grams looking somewhat like a plane.

High winds outside and found that the heavy weight is causing a tuff time finding the CG in the cellar. It is acting like my EDF SR-71 with the long nose, it doesn't take much(goes nose high) and it stalls out quickly. Move the battery aft doesn't help.
So now, back to white papers and look at changes to the canards and angular shapes of the FSW wing to see if we can improve it. Also going to get outside and see what happens when I have more room to fly it.

 

[Mr Man]

Now onto the Forward Swept Wing.
Trying to keep the weight down, I ended up with a 52.8 grams looking somewhat like a plane.

View attachment 248335
High winds outside and found that the heavy weight is causing a tuff time finding the CG in the cellar. It is acting like my EDF SR-71 with the long nose, it doesn't take much(goes nose high) and it stalls out quickly. Move the battery aft doesn't help.
So now, back to white papers and look at changes to the canards and angular shapes of the FSW wing to see if we can improve it. Also going to get outside and see what happens when I have more room to fly it.

Reminds me of the X-29

 

[AIRFORGE]

Finished off installing electronics, doing CG balancing at 1/2 throttle, and using battery to trim going straight. Used cellar and "catch system" and had repeatable 42 ft throws in cellar. No dings at all. The hardest now is coming up with an appropriate name for this one. Using cardboard may work, but will be heavy.

Will have to wait for storm goes out to sea to see what it can do outside, calm and when wind blows.

View attachment 248302
It's name is now called "CIRQUE"
Now to design the FSW.

Cirque de EZ!

 

[Mr Man]

Cirque de EZ!

Le France

 

[AIRFORGE]

La France

 

[Mr Man]

La France

👍

 

[FoamyDM]

So @L_Edge why isn’t this official?

 

[FoamyDM]

Finished off installing electronics, doing CG balancing at 1/2 throttle, and using battery to trim going straight. Used cellar and "catch system" and had repeatable 42 ft throws in cellar. No dings at all. The hardest now is coming up with an appropriate name for this one. Using cardboard may work, but will be heavy.

Will have to wait for storm goes out to sea to see what it can do outside, calm and when wind blows.

View attachment 248302
It's name is now called "CIRQUE"
Now to design the FSW.

I designed a similar thing last year! They are so much fun! The former make the build so quick.
The name is perfection.

 

[L Edge]

Nice! Sort of has the shape of a bottle opener. How wide/long is it?

12.6 inches

Cirque de EZ!

Ok, you complement is perfect.

 

[L Edge]

Went back and changed the angle of the FSW tail(less movement of CG) and with another trick, now have a good handle of cellar flying. Since the weight of the plane is in the 50's grams, it must be chucked faster and the same angle to established the same consistency to do the CG location. I got up to 20 + feet and it is haulin at 1/2 throttle. End up putting the nose thru the canopy a bunch of times so that is enough indoors.

Next week, the temps are going to be above freezing, so I have the FSW and the SR-71 to explore outside. These will be tough ones if I have to fly in any gusty conditions.