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Old Sep 04, 2009, 05:18 AM
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France, Alsace, Molsheim
Joined Jun 2005
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DC3 Top Flite electric conversion

The flight of an American Airlines DC3 Top Flite

DC-3 RC Top Flite Maiden Flight (3 min 59 sec)


A comment about the figure at 2'18" : I had some troubles when I activated the flaps
- 1st trail with elevator mixed with flaps as written in the manual (2.5mm up): the plane goes up.
- 2sd trail with elevator mixed with flaps 1mm down. You can see the result on the video at 2'18": a kind of roll over. It's the reason I don't use them for the landing and had some stress for the landing.

Jean-Marc
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Old Sep 10, 2009, 10:27 AM
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Thrawn150's Avatar
USA, IL, Oak Lawn
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That looks great.
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Old Sep 11, 2009, 11:40 AM
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ezrydr's Avatar
Alton Iowa
Joined Aug 2006
423 Posts
thanks for posting that - very nice looking DC3


upon takeoff did you notice the plane wanting to roll to the right?

if it did, did you have to put in much correction?
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Old Sep 11, 2009, 12:42 PM
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France, Alsace, Molsheim
Joined Jun 2005
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Thanks for your comments,

I had just to trim (a little bit) the elevator.
The problem with the flaps seems fixed (less stroke for the flaps and 1mm elevator down with the flaps open)
I had just to take time to make the 4th flight to try this and to land more slowly...

Jean-Marc

Some pictures about the construction in the section Joe's Hangar
http://www.wix.com/jiminez/MonGarage
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Old Sep 12, 2009, 07:38 AM
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Alton Iowa
Joined Aug 2006
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Jean-Marc

could you please post details of your power system and final weight of your DC3?

thanks,
Steve
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Old Sep 13, 2009, 12:01 PM
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France, Alsace, Molsheim
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Hi Steve,

Some details about the weight

- Fuse with 2 servos: 1107g (2.43lbs)
- Wing complete with 2 electric motors, 2 controllers, 5 servos, flaps and robart retact: 2496g (5.49 lbs)
- Batteries : 757g (1.66 lbs)
The total weight is : 4360g (9.59 lbs)

the weight of the Robart retacts cylinders, air tank and the legs is 350g, the wheels 236g and the motors + controllers 420g

and about the motors

I use 2 AXI 2826/12 motors with jeti 40 opto + controllers, an external UBEC 5A and the batteries are Hyperion 4S3300mAh.

Props : graupner cam prop 11 x 6 (9800 rpm at 25 A)

Flying time 12 to 15 mn

Half throttle is enough to fly scale.

I made the 4th fly today with a very nice landing.

Jean-Marc
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