Astro-Hydro 127% Plans & Build Project

[AstroBoy]

Folks, Astro-Hydro 127 is finally ready for maiden flight this weekend
Wish me luck

[Vifo]

Happy Maiden

Hi Astro,
At LAST your Building Agony is over, Looks good for a Sail Flight from the profile of the Craft.
Remember to cover up your receiver,
Up Up & Away to A Successful Flight.

[stuka]

...congrats on another masterly executed project ...I am all ready to see the 5D stunts..

[P4cm4n2000]

Astro,
looks like forward mounting motor makes the CG now much better....tell us about the maiden will ya?

I'm thinking of making one too...but gota find time after my "IFO" maiden....

[Jcho]

Hi John,

Please share your IFO plan....planning to build one too..

Cheers

[Jephry]

plzzz

[P4cm4n2000]

wah lau bro Jcho...not here lah...this thread is for Astro-Hydro 127 ....

I'll post at the main Airplane tap soonest....

cheers!

[Jcho]

Oh Yar Pai Sei Steven....aside to John please start off your thread....include BOM list and cost price where we could buy the material...cheers

[DennisP]

Well done for a unique flying machine.....

[AstroBoy]

Hi all,

I have finally maiden the Astro Hydro 127
Thanks for coming today to witness this flopping blop of foam flying around And i must thank Rajoo (Mechplas) for taking beautiful pics of my Hydro's maiden flight, soooo many pics he took!!! Thanks Rajoo
Just managed to crop the pictures for uploading until now
I've decided to change out the Himark BL outrunner motor, it sucks I've put in the Himax 2025-4200kv c/w 4:1 gearbox, APC 9X6E cut down to 7.5" diameter (i didn't have APC 8x6E, so use existing APC9X6E), powerful now If anyone is building this, please keep your prop size below 8" diameter
AUW (All Up Weight) is about 465 grammer w/o flight battery, mine is ETEC 1250 3S1P weighing in at 92 grammes, so total weight RTF = 557 grammes
Amps draw is about 11.7amps, i highly recommend using 20C discharge lipo batteries, for mine is only 12C 1250mah, amps cut at about 13 amps , i actually have to reduce my throttle ATV to about 32% (normal is 100%), but it's adequate to fly this AstroHydro. I hope to have higher discharge lipo batteries down the line so i won't have to resort to meddling with the throttle ATV, it's not getting the full potential out of the BL motor setup and i'm very sure it can be more powerful and fly faster with a 20C discharge lipo.

Motor Upthrust is about 6 to 7 degrees.

Aileron throws, left = 10mm, right = 10mm
Elevator throws, up=10mm, down = 10mm

Exponential for Ailerons = +40% (for Futaba Transmitter it's [-] minus)
Exponential for Elevators = +37% (for Futaba Transmitter it's [-] minus)
Exponential for Rudder = +20% (for Futaba Transmitter it's [-] minus)

I will update the PDF drawings at the beginning of this thread by tomorrow, CG is slightly forward, so hang on a minute on the drawings download

Enough talk, enjoy the pics folks

[AstroBoy]

First take-off pics in sequence

[AstroBoy]

...

[AstroBoy]

A tribute to National day i guess
Plus some interesting flight shot angles
Thanks Rajoo

[rifqi]

abang steven...

got videos?????

hehe..

[AstroBoy]

Stuka, this is for you, taking-off grass and proceed to harrier maneuvre