to give you more desire to finish your binary900

Binary 900V2 - 8 (2 min 35 sec)

i know, my rudder is not really perpendicular any more, but it fly nice to make the fool!!!!

regards

Originally Posted by Wingman77

Thanks for that.. Ive previously looked at the Dymond 47 but sourcing them can be hard in Aus..

No problems here, deal direct with Dymond, they post direct to your door for like $10US. Other option is HopShopGo if you are putting a few things together from the states, like cheap snowboarding gear )

To answer my previous questions, had to rely on my brain, I cut the film away, glassed it then coloured in the area with a red Sharpie. Also I didn't run the ailerons all the way off the tip, I cut them short to give the tip of the aileron some protection.

Here's a few shots of my Binary

Nice plane ClimaxPilot!

My Binary 900 v2 is finally done - although I built it as a v1 without ailerons, just with Rudder/Elevator.

The magnet on the nose can take more or fewer magnets on top, to adjust the CG (perhaps not new, but I independently came up with the idea).

I'm using this "3.6gm" Blue Arrow servo.

As at 31 August 2011 - it's still unflown!

Thanks to MattN for his guide. I picked up a couple of hints from him - I especially liked using 3M-77 glue for tack-fixing the fibreglass pieces.

Simon

What is the optimun diheral angle(manual 128mm) for the aileron version. Looks too much for an aileron version. Ta

Originally Posted by MartinL

What is the optimun diheral angle(manual 128mm) for the aileron version. Looks too much for an aileron version. Ta

Well I thought so too but I went ahead and built it that way and it seems to fly well (too lazy to change the angle). I am not an expert however and I don't have too many comparison points but one of the glider guys at my field who flew it a few times didn't have anything bad to say about it.

- Birger

Love this plane

Suburban DLG Mission 2 (1 min 15 sec)

How did the Hitec HS-35HD servos work out in this plane?

Is centering better than a D 4.7?

Do they drift like the D4.7 when the temp change (so I have heard)?

Anyone do a 4 surface (rudder, elev, and dual ailerons) controls?

Frank

Originally Posted by Fly2High

How did the Hitec HS-35HD servos work out in this plane?

Is centering better than a D 4.7?

Do they drift like the D4.7 when the temp change (so I have heard)?

Anyone do a 4 surface (rudder, elev, and dual ailerons) controls?

Frank

I can't compare with the D4.7 as I have never used them but I have the HS-35's all around (ail / elev) and they are working well. I am no competition pilot but have personally not found any centering issues and only a very small amount buzzing at times when the flaps are fully deployed.

- Birger

Originally Posted by MartinL

What is the optimun diheral angle(manual 128mm) for the aileron version. Looks too much for an aileron version. Ta

Dihedral angle is increased for rudderless model. It will help banked turn.

harry

What is the servo of choice for this plane?

Anyone use any of the Jr 185 or 188 servos?

I have some Jr 185 analogs but I may try the Hitec HS-35 instead. Not sure. For the price the 188 digitals might be the way to go.

Frank


Frank

you need really small servos. D47's fit well, maybe HS35's (they didn't exist when I built mine). The '188 and '185 are too big.

you must know, that a D47, is hard to put in the wing perfectly....

It exists smaller servos than D47 or HS35, but it will be really risky to get enough acuracy, power and resolution.

HS35 are newer and works well, but peoples made tests, and they are not better than D47.

maybe these:
http://www.skipmillermodels.com/ION_...ion-ds57mg.htm

What depth of servo is needed to go into the wing to fit?

Originally Posted by Fly2High

What depth of servo is needed to go into the wing to fit?

Well, the Hitec HS-35HD barely stick out (maybe 1/2 mm) and they are 7.6mm thick so lets say 7mm at the thinnest spot in the cutout.

- Birger

if you cut the "arms" of your D47, it must be just good, maybe you need something a little bit less thick.
in mine, i let the arms of my D47, so the servo have more offset.