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Old May 17, 2012, 05:49 PM
I fly Helis too!
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,758 Posts
New Product
Isis II

Well What do you think...? this is just a depron rapid Proto of the ISIS II (took 5 Hrs to build) the final Version will be Depron Cored and Kevlar Skinned... and have a tapered Avia sport boom rather than a Straight one...

Let me Know of your Thoughts...?

Done!
My Checklist is:
Hook up Flapperons.
Hook up Elevator
finalise boom fitting and Epoxy in place...Check!
take a FG pull off the Proto Fuse...

Keenan

if your interested PM me to negotiate a Price..as this will go into limited production

And PM me if you would like to Fill one of Four Beta testing Slots...
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Last edited by Keenan smith; May 19, 2012 at 09:58 AM.
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Old May 17, 2012, 07:38 PM
a.k.a. Matt Nelson
MattN's Avatar
North Tustin, CA
Joined Oct 2008
1,703 Posts
Quote:
Originally Posted by k.smith459 View Post
Well What do you think...?
I think you need a better camera!
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Old May 17, 2012, 09:21 PM
let's FLY!
JimZinVT's Avatar
United States, VT, Castleton
Joined Dec 2007
1,877 Posts
+1 !
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Old May 17, 2012, 10:01 PM
Registered User
United States, CA, Tehachapi
Joined Jun 2011
3,069 Posts
Good work! That only took 5 hours from beginning to end?! My last build took 40 hours, and I didn't have to cut cores or make a fuse. What's the all up weight? Also, I thought that depron couldn't be hotwired. Was I wrongly informed or did you use a different method to cut the cores?

Brandon
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Old May 17, 2012, 11:14 PM
Aurora Builder
United States, MD, Lusby
Joined Nov 2003
3,373 Posts
Most depron is XPS and can be hotwired. Double check before doing.

Also, typical depron is ~15 psi compressive strength so not the best shear web. Certainly usable as a core with some creativity. An issue is getting the stuff in a thick enough batch.
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Old May 18, 2012, 12:40 AM
Registered User
JamesCH's Avatar
Thailand, Bangkok
Joined Oct 2011
70 Posts
Quote:
Originally Posted by mattn View Post
i think you need a better camera! :d
+1
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Old May 18, 2012, 05:35 AM
I scratchbuilt my SUPRA
Switzerland, AG, Lenzburg
Joined Jan 2006
1,873 Posts
finally a finished plane from K, but still same blurry photos :P as always.

Hey K whats the EDA of that plane?? seems kind of flat for a DLG. And what about the boom lenght??

I hope you get an actual video of the maiden flight and some detailed pics on those wings

EZ
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Old May 18, 2012, 09:48 AM
I fly Helis too!
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,758 Posts
....
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Last edited by Keenan smith; May 18, 2012 at 10:05 AM. Reason: Double post..
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Old May 18, 2012, 09:54 AM
I fly Helis too!
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,758 Posts
Quote:
Originally Posted by bwill6 View Post
Good work! That only took 5 hours from beginning to end?! My last build took 40 hours, and I didn't have to cut cores or make a fuse. What's the all up weight? Also, I thought that depron couldn't be hotwired. Was I wrongly informed or did you use a different method to cut the cores?

Brandon
i cut Panel blanks....then i use Airfoil temlates to Sand the cores To shape

Quote:
Originally Posted by Edwinzea View Post
finally a finished plane from K, but still same blurry photos :P as always.

Hey K whats the EDA of that plane?? seems kind of flat for a DLG. And what about the boom lenght??

I hope you get an actual video of the maiden flight and some detailed pics on those wings

EZ
Well,
The W/S is 1500mm
The Length including Fuse is 1000mm (Minus Rudder)
the Boom Length is 600mm long..
and the Protos pod is depron built up..... (and will be pulling some PTEG pods from a new Plug of the same shape..
The Airfoil is undisclosed.... (gotta keep some secrets...)

Yeah i'll get some Video (just waiting on Mother nature...) and my action cam is Charged and Waiting...

and What Does EDA mean...?
i still have to do some linkages.....

id Say Right Now She weighs in around 150- 160g I will Weigh her Later...

Keenan
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Old May 18, 2012, 02:18 PM
I scratchbuilt my SUPRA
Switzerland, AG, Lenzburg
Joined Jan 2006
1,873 Posts
hehehe k's secret airfoil, "tremble Dr drela, tremble" ehehehheeh come on K that is another depron sanded wing I can see that even with your blurry pics your secret is out and screaming

150cm and 150g is that the empty weight??? ready to fly??? if it is ready to fly you even beaten the super gee with 220g

waiting for the video opc orn:

EZ

PS. strange that you do not know what EDA means
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Old May 18, 2012, 02:24 PM
Father of Fr3aK, DLG Pilot
tom43004's Avatar
USA, OH, Worthington
Joined May 2002
6,569 Posts
Google "equivalent dihedral angle" and you'll find some calculations for figuring tail volume, moment, and dihedral to determine spiral stability.

It's pretty important for DLGs. My guess is you're around 4ish.
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Old May 18, 2012, 02:46 PM
I fly Helis too!
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,758 Posts
Quote:
Originally Posted by Edwinzea View Post
hehehe k's secret airfoil, "tremble Dr drela, tremble" ehehehheeh come on K that is another depron sanded wing I can see that even with your blurry pics your secret is out and screaming

150cm and 150g is that the empty weight??? ready to fly??? if it is ready to fly you even beaten the super gee with 220g

waiting for the video opc orn:

EZ

PS. strange that you do not know what EDA means
I'd Say around 160g ARF (minus battery... )

Dang my secrets Out Oh well.... But While Sanding i Do use Templates ..... to make sure that it complies to the foil i Selected...
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Old May 18, 2012, 02:55 PM
I fly Helis too!
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,758 Posts
Quote:
Originally Posted by tom43004 View Post
Google "equivalent dihedral angle" and you'll find some calculations for figuring tail volume, moment, and dihedral to determine spiral stability.

It's pretty important for DLGs. My guess is you're around 4ish.
Well i like expirimenting First...! Trail and Error is my Favorite Way...

BTW big news the boom is Being Set in Place... so i might get in a maiden tommorow or on tuesday ... Depending on the Weather and if my LHS has a Servo snake thats long Enough for the Elevator...
And for the time Being i slightly oversized the Elev to be on the safe side...
Keenan
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Old May 18, 2012, 06:36 PM
Up-Out-&-Gone
demondriver's Avatar
Charelston SC U.S.A.
Joined Mar 2007
14,804 Posts
Amazing work K! Your new Isis Glider looks like a winner! All you need now is some good weather for the maiden flight. . . . . .or should I say maiden soar!
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Old May 18, 2012, 06:40 PM
I fly Helis too!
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,758 Posts
Yup gimme a few days and She'll Be flyin..
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