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Old Oct 12, 2010, 04:45 PM
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United States, GA, Smyrna
Joined Dec 2002
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Windsong electric conversion radio programming help for electric sailplane

I have lost my manual on the transmitter and need help on programming the radio. I have a JR transmitter 9305 ( 9 channel with a 7 channel receiver 2.4)
I am converting a 1990 Windsong Sailplane to electric powered. ( I had a spare fuse to use!)
I have added servos in the wings for the ailerons instead of the linkages.
I have one servo for the flaps as I am keeping the simple linkage system from Dodgson design. I would like to set up normal flaps, up 6 degrees and down landing maybe 80 degrees.
One servo for rudder and one for elevator
I have motor control from the ESC.
I need help setting up the controls.
1- How do I program the ailerons to work? Only left wing aileron works.
2-Where should i control the motor, normal throttle stick or maybe the gear switch.
3-where do i control the flaps?


Any suggestions would be appreciated!
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Old Oct 13, 2010, 08:49 AM
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Minnetonka, MN
Joined Aug 2003
94 Posts
All human knowledge seems to be available on the web. In the case of the JR 9503 radio system, the manual is available to download here:
http://www.jrradios.com/ProdInfo/Fil...930-manual.pdf
That should get you started.

-Ben
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Old Oct 15, 2010, 12:50 PM
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United States, AZ, Surprise
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Have any pictures of the conversion????
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Old Oct 15, 2010, 07:03 PM
Zor
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You are now able to get the manual again.

I am wondering why you would want the flaps up to 80 degrees ?

You wish to use them as speed brakes ?

Zor
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Old Oct 18, 2010, 12:00 AM
Zor
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Marcv,

Do you now have the downloaded manual and does it answer your questions ?

Zor

Edited by Zor on 20 October 2010 at 08:12 AM to change mispelled address from "Marcy" to "Marcv".
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Old Oct 18, 2010, 07:18 PM
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United States, GA, Smyrna
Joined Dec 2002
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Yes the manual allowed me to program the Windsong.
left and right ailerons
one common flap
rudder and elevator
Throttle on right slide
I am now working on my Hacker speed control to program. I will post photos later in the week

Marc
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Old Oct 19, 2010, 12:28 AM
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Hawaii
Joined Dec 2007
571 Posts
An elecitrified Windsong is an awesome glider. I'm looking forward to hearing about your flight tests as when my father did his e-conversion it was a true spectacle in the air--wings gently flexing in lift and all. It's a great old-school design that adapts wonderfully to carrying an electric payload. I think my father's came out about two ounces heavier than pure glider mode. Modern servos and drive systems for the win!

Carl
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Old Oct 20, 2010, 08:47 AM
Zor
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Quote:
Originally Posted by Haole View Post
An elecitrified Windsong is an awesome glider. I'm looking forward to hearing about your flight tests as when my father did his e-conversion it was a true spectacle in the air--wings gently flexing in lift and all. It's a great old-school design that adapts wonderfully to carrying an electric payload. I think my father's came out about two ounces heavier than pure glider mode. Modern servos and drive systems for the win!

Carl
Hello Carl,

I am always amazed at modern electronics.
How small and lightweight they can be.

As I visualize the addition of a motor, perhaps an ESC, and no doubt a heavier battery to supply that motor, and come out with only two ounces heavier is a nice achievement.

I am presently building a Spectra and the motor, battery, electronics and linkages are by themselves about the weight of the whole structure.

It is using three so called standard servos and will carry two batteries. One for the motor will be Onyx 2000 (2000 mah) 7.2 volts and weigh 10 oz. and one for the receiver and servos a Spectrum 1100 mah 4.8 volts that weigh 4.5 oz.

The dual receiver is 1 oz. The three servos are Spectrum DS821 and the three weigh 6 oz. with their wiring and connector. The wiring harness (wiring, connectors and switch is 0.75 oz.

Total _ _ _ 10 + 4.5 + 6 + 1 + 0.75 = 22.25 oz or 1.4 lb.

While the scale available is not the utmost it gives a fair idea of what I am talking about.

Pictures being processed

and now attached _ _ _

I am expecting the flying weight will be just over 3 lbs. with a wing loading about 10 oz / sq. ft.

Zor
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Old Oct 20, 2010, 11:33 AM
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Hawaii
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Quote:
Hello Carl,

I am always amazed at modern electronics.
How small and lightweight they can be.

As I visualize the addition of a motor, perhaps an ESC, and no doubt a heavier battery to supply that motor, and come out with only two ounces heavier is a nice achievement.
Zor, Dodgson did a lot using standard (or mini) servos coupled to complex mixing linkages to achieve computer-radio like functionality in his designs. They were quite brilliant but heavy. When you strip the complexity of the original mechanics out and go with powerful micro servos, replace the huge, steel wingrod with CF and remove all of the nose ballast, you come out very close to original. A similar conversion to a Pixi added again just about one ounce. Same with a 117" Sensor.

Can you swap out that big NiMh pack for a small Lipo and choose a small but powerful brushless motor to match it? Therein will lie your biggest weight savings.

Carl
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Old Oct 29, 2010, 10:10 PM
Zor
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Quote:
Originally Posted by Haole View Post
Zor, Dodgson did a lot using standard (or mini) servos coupled to complex mixing linkages to achieve computer-radio like functionality in his designs. They were quite brilliant but heavy. When you strip the complexity of the original mechanics out and go with powerful micro servos, replace the huge, steel wingrod with CF and remove all of the nose ballast, you come out very close to original. A similar conversion to a Pixi added again just about one ounce. Same with a 117" Sensor.

Can you swap out that big NiMh pack for a small Lipo and choose a small but powerful brushless motor to match it? Therein will lie your biggest weight savings.

Carl
Thanks Carl for your suggetion.
I will first see how this sailplane flies then I will play with modificatons.
This kind of plane is just the thing to try all kind of things.

I am now playing with my first adventure in Electrc Propulsion and hopefully some soaring.

Thanks and best 2 U.

Zor
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Old Oct 30, 2010, 06:48 PM
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Wow, your first electric and sailplane? Prepare to have fun!
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Old Oct 31, 2010, 04:16 PM
Zor
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Originally Posted by Haole View Post
Wow, your first electric and sailplane? Prepare to have fun!
I am having lots of enjoyment building it.
The left wing is ready to cover.
The feathers are clear doped and ready for the color scheme.
The servos are insalled and the push-pull rods done and ready to install.

I am trying to figure the best way to install the dual 2.4 Giga receivers.

I took quite a few pictures while building.

It is a very old kit I think. The only electrified sailplane kit the local LHS had on the shelves.

It should be more relaxing to fly than the Skybolt.

Zor
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Old Nov 20, 2010, 08:21 PM
Zor
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Hi all,

Has anyone built a Spectra sailplane ?

I would like to talk to you.

Zor
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Old Jan 29, 2011, 04:49 PM
Zor
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Hello everyone,

I am repeating this post in case it was not seen or got forgotten.

Quote:
Originally Posted by Zor

Hi all,

Has anyone built a Spectra sailplane ?

I would like to talk to you.

Zor
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