Dragonfly Strong - Page 20 - RC Groups
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Nov 02, 2011, 08:25 AM
Hot Dawg Glider Pilot
schrederman's Avatar
Since the Dragonfly Strong spar is constructed the same way... you're not too far off base...
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Nov 19, 2012, 12:39 PM
FLY FOR FUN - GLIDE FOR LOVE
pablo pinto's Avatar

DragonFly Strong


Hi, i am new in the teme of sailplanes and gliders and i have a Dragonfly Strong and a BLIZZARD 3.4 meters but i wanna convert to electric because now i am living on a flat area and i would like to have an electric gliders can you give me an advise if is posible to convert this beutifull birds to electric, and what motors do you recomend , i have the motor MVVS 5.6/690 http://www.espritmodel.com/mvvs-46-5...ess-motor.aspx and i wanna know if this motor is good or is too strong for this bird or what motor do you recomend.
Thank you.
Nov 19, 2012, 01:17 PM
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Woodstock 1's Avatar
I think that should work fine. That web link gives you good starting point for the size of the other components you will need too...

Chris
Nov 20, 2012, 01:24 AM
FLY FOR FUN - GLIDE FOR LOVE
pablo pinto's Avatar
thank you Woodstock 1 .
so do i have to change the CG if i convert to elctric or the original CG is fine?
Nov 20, 2012, 04:44 AM
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Woodstock 1's Avatar
Quote:
Originally Posted by pablo pinto
so do i have to change the CG if i convert to elctric or the original CG is fine?
No!

By the way, I found the factory suggested CoG was way too far forward.

Chris
Nov 20, 2012, 12:03 PM
FLY FOR FUN - GLIDE FOR LOVE
pablo pinto's Avatar

about the dragonfly


What CG do you recomended if i convert to electric?
Because i try to fund some info or manual but nothing (because i lost the original manual).
Can you help me please.
Nov 20, 2012, 12:10 PM
Proud member of LISF and ESL
Basically you are going to take your DragonFly Strong, a winched plane and convert it to a DragonFly Strong-E
http://www.soaringusa.com/DragonFly-Strong-E.html

Likely you could just buy the E fuselage and retain the one you have for Hi-start/winch/slope

CG would remain the same, in terms of starting point on the specs, then you tune to taste. Pablo Pinto prefers his CG more rearward. Your smileage may vary.
Nov 20, 2012, 12:13 PM
Registered User

Dragonfly Strong


Hi Pablo: The sialplane version that i am flying is around 68 oz. The motor that you are looking at puts out approx 700 watts. If you add battery weight and motor weigh I am guessing that it would be closer 80-85 oz if you eliminate the receiver pack. This works out to ~135-140 watts/lb which should give it vertical performace at peak power. Quite frankly 400 watts with a cheap outrunner would be all you need and give it a healthy climb rate.
Cheers
AJ
Nov 20, 2012, 01:46 PM
Registered User
GliderJim's Avatar
Pablo - I found this post that says after some testing that he ended up with 4 3/8" back for the CG...
https://www.rcgroups.com/forums/show...99&postcount=1
Nov 20, 2012, 06:59 PM
FLY FOR FUN - GLIDE FOR LOVE
pablo pinto's Avatar

about the dragonfly


aeajr , ajbhatta Glider Jim , thank you very much for the info i going to work now and i hope to do the fly this weekkend ,i will send you the pictures or video to show you how this bird flys.
Thank you very much for your help :
Nov 21, 2012, 08:17 AM
Registered User
I flew mine with CG about 102 mm back from LE did OK, considering conversion to electric for ALES type stuff
Nov 22, 2012, 11:05 AM
Registered User
Evan D's Avatar
I wanted more vertical. I started with a geared Mega and ended up with a geared Neu. Wonderful glider.
http://www.espritmodel.com/neu-1115g-series-motors.aspx
Nov 23, 2012, 01:02 PM
Registered User

The first Dragonfly


Hi guys,
This is the original Dragonfly. This plane flies like a dream and can thermal with the best. This Dragonfly also qualifies for all woodie contests too. 2013 is going to be a great year
I hope.

WDKK

P.S.
You might know a few of the guys in the background. I keep pretty good company lol
Apr 02, 2013, 01:34 AM
Registered User
Hello all,

I have recently got me a Strong X and building it as we speak.
Just a question on the stabilizer. I would like to make it removable for transport. Is there a way to fix it properly? Or do you all fix the stabilizer in place without making it removable?
Apr 02, 2013, 01:08 PM
Hot Dawg Glider Pilot
schrederman's Avatar
Quote:
Originally Posted by WDKK
This Dragonfly also qualifies for all woodie contests too. 2013 is going to be a great year
I hope.
Due to the molded wing tips, some CDs may disqualify it from woodie competition. Woodies are generally thought to be non-arf types that are built by a modeller... though that isn't stated in the rules as Ray Hayes wrote them. It's just a kind of an understanding... implied, if you will.

Don't get me wrong... I would let you fly it, but some might not. Just be prepared for that.

They are great models...


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