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Old Nov 09, 2012, 06:13 PM
Youtube: TomRi25
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Croatia, City of Zagreb, Zagreb
Joined Aug 2010
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X8 skywalker handlaunching and landing... (4 min 36 sec)


btw, HK has metal gear 180 servo, pretty cheap
http://www.flyfreak.net/elektronika-...cseen#msg95023
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Old Nov 09, 2012, 06:20 PM
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Lakewood, Colorado
Joined Aug 2002
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I use the Hitec HS-5245MG for the GoPro pan servo on my Skywalker. It can
be programmed to 180 degrees, but you need access to a Hitec digital servo
programmer (my LHS has one I use).

ian
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Old Nov 09, 2012, 11:07 PM
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Ecilop Chasing X8

Ecilop Chasing X8 part 2 (2 min 9 sec)
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Old Nov 10, 2012, 03:46 AM
Never fly an A model anything!
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Antarctica
Joined Apr 2008
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You just need to add your peregrine falcon to the chase... Looks like an Etihad Airlines Commercial. Nice
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Old Nov 10, 2012, 03:59 AM
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Quote:
Originally Posted by TheCure View Post
Pictures as requested.
Took a good few hours per side to sand that taper down
Nice. Well done

http://www.facebook.com/groups/projectbigbird
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Old Nov 10, 2012, 04:02 AM
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Video soon....

Did 2 Maiden flights today with BigBird. Both ended in flat spins that I could not get out of....

No damage and ALL caught on video from onboard and the ground.

Bungee launch worked really well too..

Hmmmm - ideas...?

Cheers

http://www.facebook.com/groups/projectbigbird
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Old Nov 10, 2012, 04:21 AM
Praying for better weather
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Joined Dec 2007
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Sounds like you have your CG too far back and too much throws on your control surfaces.

Or just CG too far back
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Old Nov 10, 2012, 07:59 AM
The Flying Circus
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Adelaide South Australia
Joined Sep 2007
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Getting ready to maiden. What is recommended control throws in mm, and how much reflex please?
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Old Nov 10, 2012, 08:27 AM
Praying for better weather
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No reflex, 10mm ailerons + 10mm elevator on top works for me
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Old Nov 10, 2012, 08:34 AM
The Flying Circus
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Adelaide South Australia
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Thanks Coyote. So 10mm travel each way, same travel for elev and ail, and no additional reflex. Just follow the contour of the wing?
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Old Nov 10, 2012, 09:09 AM
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Double post
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Old Nov 10, 2012, 11:17 AM
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Video of BigBirds Maiden Flight. Done a great job again with the video Phil, thanks. Includes bungee launch and the death spin "landings"...! http://m.youtube.com/#/watch?v=dyNuH...%3DdyNuHo-FNBE
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Old Nov 10, 2012, 11:20 AM
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Quote:
Originally Posted by Coyote64 View Post
Sounds like you have your CG too far back and too much throws on your control surfaces.

Or just CG too far back
Thanks - ok will adjust throws (is 10-15mm a good starting point). CG to far back - you mean nose heavy?

Cheers
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Old Nov 10, 2012, 11:23 AM
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ITALY
Joined Aug 2006
417 Posts
with the hitec servos on the ailerons i hear some jitterings (even with double ferrites)... why??
they are the hs225 mg


Quote:
Originally Posted by philthyy View Post
Hitec servos are well proven. I trust them. As far as ESC, I would go with the Castle Creations ICE 75. Or a Kontronics ESC.
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Old Nov 10, 2012, 11:42 AM
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Quote:
Originally Posted by VizBizTas View Post
Thanks - ok will adjust throws (is 10-15mm a good starting point). CG to far back - you mean nose heavy?

Cheers
No, the nose is too light. It should balance right at the rear of the finger holes on the bottom of the plane.
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