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Oct 13, 2017, 07:17 PM
sanukiudon's Avatar
Thread OP
Build Log


Today I started build Ninja 2.5T-3
This is the third .
It's an order from my friend.

1~3 are almost same ply pattern.
It's a type that made it as light as possible.

Span : 2.5m (3 pieces)
Flight weight : 2.7kg
Last edited by sanukiudon; Feb 03, 2019 at 06:47 AM.
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Oct 21, 2017, 03:58 AM
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Kenneth Paine's Avatar
Excellent work as usual!

May I ask a favour? I followed your Ninja 1.8 thread with great interest and there was one particular detail that was not clear to me: how you turned a multi-tapered foam core wing panel to a finished wing with a curved leading edge.

I would be very grateful if in this thread you could show your shaping methods to curve the leading edge whilst still maintaining aerofoil accuracy or fidelity.

What perplexed me was how you were able to bag the wing upside down, top skin first, without getting a print from the core panel breaks on the top side.

Many thanks,

Oct 21, 2017, 05:07 AM
sanukiudon's Avatar
Thread OP
Thank you for your comment ,Kenneth!!

I think that my method is analog and outdated.
The accuracy of the surface of the wing works well with the fairing work (there are knacks).
I'll upload photos as much as possible.
Last edited by sanukiudon; Oct 21, 2017 at 05:56 AM.
Oct 21, 2017, 05:57 AM
Registered User
Kenneth Paine's Avatar
Before CNC everything was made by hand and surprising accuracy and quality can be achieved with the right technique, which is why I am asking you to reveal your methods.

The photo below of your Ninja 1.8 wing is a good example of this and, judging by later photographs of the completed wing, your finish is probably as good as is possible by hand.
Last edited by Kenneth Paine; Oct 21, 2017 at 06:03 AM.
Oct 21, 2017, 06:01 AM
Registered User
Kenneth Paine's Avatar
Whilst of the subject of the quality of good hand techniques, the photo below is that of a wing plug made by our fellow RC Groups member Shaper Dave.

No, it is not CNC made. It is a foam core plug.

Work like yours and Shaper Dave's should not be dismissed in favour of CNC.
Oct 21, 2017, 07:26 AM
sanukiudon's Avatar
Thread OP
I'm very happy that you see the thread of Ninja 1.8 in detail !!
Shaper Dave nice work !!
Oct 30, 2017, 11:30 PM
Remember... Fly for fun!
Thank you got taking the time to post, I am learning a lot from how you build
Oct 31, 2017, 01:45 AM
sanukiudon's Avatar
Thread OP
Thank you ALEX HEWSON !
I'm glad to watch this thread
Nov 20, 2017, 01:28 PM
Certifiable User
killercando's Avatar
Your attention to detail is Epic!

Are you building this for NZ DS Fest in January?

Nov 21, 2017, 01:11 AM
sanukiudon's Avatar
Thread OP
Thanks Lee !
I think that this customer probably will not go NZ.
But if order now
I'll make it in time for NZ DS Fest !!
Nov 21, 2017, 11:54 AM
the occasional flyer
rothlisburger's Avatar

Nice new home for Sean's Deepend, I see. Let's see some video!

Nov 21, 2017, 06:23 PM
sanukiudon's Avatar
Thread OP
Thanks David !

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