Originally Posted by lucdus

Bonjour Popad, nice & instructive pics, thanks for sharing. All this represent a lot of work ...

Thank you, Jean Luc.

Originally Posted by Hector Parra

Very nice build, and very interesting plane.
Is this kit available in the US /Canada?
Thanks

Thank you, Hector. Sorry, I don't know.


And now a video (5 minutes) that sumarize 5 month of work for the twin gliders ...

Introtroduction F5J kit - buiding log for twin gliders (5 min 13 sec)

impressive video , well done ... wishing you a nice meteo window soon ...

I try to find an end blocker of control rod bend at 90 degrees, because E/Z Link is too small in my case.

I have tried to make one. Was succesfully. Then I made more, to have for use.

Hello Popad,

on post 153 you wrote:
"I try to find an end blocker of control rod bend at 90 degrees, because E/Z Link is too small in my case."

I tried those E/Z links O.81 mm on my rod (not yet bended at 90 deg) and it seems ok . Did I miss something ??

By the way it is true that they are very small and we can loose them easily during assembly, good to have spares

Out of this your alternate solution is interesting

I am on step 37 on the built / external wings beginning - I started 08 march so approx 1 month ago.

Originally Posted by lucdus

Hello Popad,

on post 153 you wrote:
"I try to find an end blocker of control rod bend at 90 degrees, because E/Z Link is too small in my case."

I tried those E/Z links O.81 mm on my rod (not yet bended at 90 deg) and it seems ok . Did I miss something ??

By the way it is true that they are very small and we can loose them easily during assembly, good to have spares

Out of this your alternate solution is interesting

I am on step 37 on the built / external wings beginning - I started 08 march so approx 1 month ago.

Hello Jean Luc,

I made some photos. Control thickness is too large for E/Z Link 0.81 mm. But my solution work very fine.

oups ... I understand now ... very clear . Thanks ...

Last operations before going to the airfield.
I checked the direction of rotation of the motor shaft. One was good, the other was good.
The problem has been fixed.
Then I fixed with CA gel the locking ends of the control rods, less for elevator, which is detachable. There I have another solution for blocking.

What about CG ? easy to adjust ?

best wishes for a nice meteo on field, thinking of first hand throw ...

Originally Posted by lucdus

What about CG ? easy to adjust ?

First was balanced at post #95.

Thought to thought .

Today I mount both gliders, and re-check first, and check too if second is same balanced like the fisrt one.

Ready to fly, with 11"x6", and battery lipo 3S 1400 mAh 40C CG is just to 87-90 mm like in manual.

Moving little battery you can adjust with milimeter CG.

Fisrt RTF have 1006 grams, second 1000 grams.

Thanks for the wishes !

I'm waiting a day with wind until 10 km/h for first flight for trimming.

Fisrt RTF have 1006 grams, second 1000 grams. = Impressive !!! (with battery lipo 3S 1400 mA)

I use the same multiplex like CG balance ... since 1 st day i used it I saw i real difference in flights set up's - Perfect tool.

Good to know that CG is easy to adjust ( from my side i reached step 51 )

battery lipo 3S 1400 mA ?? is it per choice or for CG adjustment necessity ?

Originally Posted by lucdus

Good to know that CG is easy to adjust ( from my side i reached step 51 )

battery lipo 3S 1400 mA ?? is it per choice or for CG adjustment necessity ?

I use this type of battery:

https://hobbyking.com/en_us/turnigy-...ck-w-xt60.html

Specs:
Minimum Capacity: 1400mAh
Configuration: 3S1P / 11.1V / 3Cell
Constant Discharge: 40C
Peak Discharge (10sec): 80C
Pack Weight: 118g
Pack Size: 87.5 x 33.5 x 19mm
Charge Plug: JST-XH
Discharge plug: XT60 (I replace with T-deans).

Here is that I read on site https://www.hyperflight.co.uk/produc...TRODUCTION-F5J

Introduction F5J Typical Weights
Total structure 600 g 21.2 oz
Wiring 10 g 0.4 oz
Receiver 10 g 0.4 oz
Rudder servo 11 g 0.4 oz
Elevator servo 11 g 0.4 oz
Wing servos (2) 22 g 0.8 oz
Speed control 40 g 1.4 oz
Motor 44 g 1.6 oz
Prop & spinner 22 g 0.8 oz
Battery 150 g 5.3 oz
Flying weight 920 g 32.5 oz

Originally Posted by lucdus

Good to know that CG is easy to adjust ( from my side i reached step 51 ) CONGRATULATIONS !

battery lipo 3S 1400 mA ?? is it per choice or for CG adjustment necessity ?

I use this type of battery:

https://hobbyking.com/en_us/turnigy-...ck-w-xt60.html

Specs:
Minimum Capacity: 1400mAh
Configuration: 3S1P / 11.1V / 3Cell
Constant Discharge: 40C
Peak Discharge (10sec): 80C
Pack Weight: 118g
Pack Size: 87.5 x 33.5 x 19mm
Charge Plug: JST-XH
Discharge plug: XT60 (I replace with T-deans).

Here is that I read on site https://www.hyperflight.co.uk/produc...TRODUCTION-F5J

Introduction F5J Typical Weights
Total structure 600 g 21.2 oz
Wiring 10 g 0.4 oz
Receiver 10 g 0.4 oz
Rudder servo 11 g 0.4 oz
Elevator servo 11 g 0.4 oz
Wing servos (2) 22 g 0.8 oz
Speed control 40 g 1.4 oz
Motor 44 g 1.6 oz
Prop & spinner 22 g 0.8 oz
Battery 150 g 5.3 oz
Flying weight 920 g 32.5 oz

I made my calcule of weights see the picture attached. Result weight of battery 118 grams. Bingo !

Thanks Popad. Good deal those turnigy lipos.

Today, wind 8- 10 km/h, first flying tests. Only gliding from 2 meter, against wind. Best result was 60-61 meter. The thrust of the engine with the 11 "X6" propeller feels good in the hand.

It was also a test of transport, assembly and disassembly of the glider. Here is a sequence of pictures in this regard.

I try a SQ8 camera but after 13 minutes it stop to record. The best flight not recorded. May be next time. (I will mod SQ8 for external battery).

First impressions, I feel it like a big RES glider. I will be to spend some time to feel accommodate with these gliders.

First flights of Introduction F5J (1 min 45 sec)