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Old Jun 30, 2011, 09:18 AM
flying is not a dream
lebenj's Avatar
Spain, CT, Cardedeu
Joined Jan 2008
988 Posts
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
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Old Jul 29, 2011, 04:23 PM
Chesty
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Reedy Creek, Qld, Australia.
Joined May 2003
372 Posts
Quote:
Originally Posted by Wingman77 View Post
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
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Old Aug 30, 2011, 11:02 PM
SSM
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Australia, VIC, Canterbury
Joined Nov 2003
1,232 Posts
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
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Old Feb 23, 2012, 02:44 PM
Registered User
Australia
Joined Oct 2000
1,221 Posts
What is the optimun diheral angle(manual 128mm) for the aileron version. Looks too much for an aileron version. Ta
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Old Feb 23, 2012, 06:07 PM
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United States, FL, Pembroke Pines
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Quote:
Originally Posted by MartinL View Post
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
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Old Mar 25, 2012, 04:34 AM
Chesty
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Reedy Creek, Qld, Australia.
Joined May 2003
372 Posts
Love this plane
Suburban DLG Mission 2 (1 min 15 sec)
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Old Apr 05, 2012, 10:29 AM
Chuck 'Em and Chase 'Em
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United States, NY, Plainview
Joined Aug 2005
8,099 Posts
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
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Old Apr 05, 2012, 11:05 AM
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United States, FL, Pembroke Pines
Joined Aug 2008
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Quote:
Originally Posted by Fly2High View Post
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
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Old Apr 20, 2012, 06:48 PM
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Quote:
Originally Posted by MartinL View Post
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
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Old May 17, 2012, 07:24 AM
Chuck 'Em and Chase 'Em
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United States, NY, Plainview
Joined Aug 2005
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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
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Old May 17, 2012, 07:59 AM
a.k.a. Matt Nelson
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North Tustin, CA
Joined Oct 2008
1,783 Posts
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.
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Old May 17, 2012, 08:10 AM
flying is not a dream
lebenj's Avatar
Spain, CT, Cardedeu
Joined Jan 2008
988 Posts
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
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Old May 17, 2012, 08:32 AM
Chuck 'Em and Chase 'Em
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United States, NY, Plainview
Joined Aug 2005
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What depth of servo is needed to go into the wing to fit?
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Old May 17, 2012, 08:36 AM
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United States, FL, Pembroke Pines
Joined Aug 2008
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Quote:
Originally Posted by Fly2High View Post
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
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Old May 17, 2012, 08:37 AM
flying is not a dream
lebenj's Avatar
Spain, CT, Cardedeu
Joined Jan 2008
988 Posts
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.
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