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Old Apr 05, 2002, 05:43 PM
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Eric S.'s Avatar
Auburn Ca.
Joined Dec 2001
37 Posts
Micro DC-9 with homemade Fans

Just finished the jet, It's built with parts from The toy gliders from Wallmart. Fuselage extensions are made with large foam drinking cups as are the fan shrouds. The impellers are Gunther props paired to make 4 blades, ans GWS dx-c motors. RTF weight is 7.5 oz./w 10 110 nicds motors draw 3.5 amps together. First flight is saturday. Power tests have it scoot fast across the the floor on it's belly...
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Old Apr 05, 2002, 05:47 PM
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Eric S.'s Avatar
Auburn Ca.
Joined Dec 2001
37 Posts
DC-9

Close-up of the Fans..
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Old Apr 05, 2002, 06:03 PM
It wasn't me...
DanSavage's Avatar
Trabuco Canyon, CA
Joined Nov 2000
4,559 Posts
Re: Micro DC-9 with homemade Fans

Quote:
Originally posted by Eric S.
Just finished the jet, It's built with parts from The toy gliders from Wallmart. Fuselage extensions are made with large foam drinking cups as are the fan shrouds. The impellers are Gunther props paired to make 4 blades, ans GWS dx-c motors. RTF weight is 7.5 oz./w 10 110 nicds motors draw 3.5 amps together. First flight is saturday. Power tests have it scoot fast across the the floor on it's belly...
Nicely done. Good luck with the test flight.

Dan
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Old Apr 05, 2002, 06:15 PM
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Joe Elston's Avatar
Orange,CA
Joined Jul 2000
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DC-9

Eric, that's pretty cool. I hope it flys well for you, cant wait to hear the flight report. Good luck.
Joe
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Old Apr 05, 2002, 06:26 PM
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Larry Dudeck's Avatar
Williamsville, NY, USA
Joined Sep 2000
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Is this a FF?

If not, what radio?

I'll bet it flies very well.
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Old Apr 05, 2002, 06:55 PM
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dallas,tx
Joined Feb 2002
731 Posts
Looks great, good luck to ya on the first flight.

any plans for those homeade fans?

ryan d.
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Old Apr 06, 2002, 12:05 AM
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Eric S.'s Avatar
Auburn Ca.
Joined Dec 2001
37 Posts
DC-9

The DC-9 uses a GWS reciever and one HS-55 servo for the ailerons and another one for elevator. A Great planes 10 speed-control controls the motors.
The Fans are fairly easy to make, Roll the motor in card paper and glue the seam,make some balsa stator vanes with some camber. Cut the cups from top to bottom and re-roll them to form a slight convergent duct then glue the motor/stator assembly in. Sounds easy as pie.................
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Old Apr 06, 2002, 09:04 AM
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GregG's Avatar
Antioch,CA,USA
Joined Dec 1999
12,303 Posts
Nice work Eric, with ten cells this baby ought to really get up and go! Are the motors wired parallel or series?
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Old Apr 06, 2002, 12:01 PM
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Corvallis, OR
Joined Mar 2000
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Very nice looking plane.Good luck on your test flight. More pics pls.!

Ron
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Old Apr 07, 2002, 12:19 AM
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Eric S.'s Avatar
Auburn Ca.
Joined Dec 2001
37 Posts
DC-9 test flight

WOW!!

Early Saturday morning the DC-9 was pushed out and brought up to full throttle, It accelerated and began a fast climb, after two turns it was at crusing altitude and the power was brought back to 1/2 throttle. At this point I thinking "no way, this is flying too good". The control and performance was much better than expected. After about 3+ min of turns and banks I reduced power and set it down on the grass completly satisfied with the project.
7.5 oz.
25" Wing span
26.5" long
And best of all the airframe materials cost less than $6.00.
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Old Apr 07, 2002, 12:34 AM
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GoEFlight's Avatar
Santa Clara, CA
Joined Sep 2001
713 Posts
Hello Eric S.:

Congratulations.

It's a great project that you have shared with us. Thank you.

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Old Apr 07, 2002, 11:21 AM
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dave morris's Avatar
orlando fl
Joined Oct 2000
5,713 Posts
Can you get a video? There is a lot of intrest in small micro jets. Great Job.
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Old Apr 07, 2002, 12:49 PM
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Eric S.'s Avatar
Auburn Ca.
Joined Dec 2001
37 Posts
DC-9

GregG; The motors are wired in parallel and 10 does make it scoot much better than the Citation you have seen. I think it will fly good on only 8 cells and maybe 3 lithiums.

Dave; No chance on the video thing I spend too much time building and flying, heck I'm not very good on a computer and can barley use my digital camera..
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Old Apr 07, 2002, 05:49 PM
KSU Flyer's Avatar
Manhattan, Kansas, United States
Joined Oct 2001
3,503 Posts
Great, glad to hear of your success. If you can't do video, how about a pic of it flying?

-Mike
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Old Apr 08, 2002, 03:59 PM
small electrics r BIG FUN
Iowa
Joined Aug 2000
4,313 Posts
Hi Eric

Nice looking plane, great project. Excellent photo and one in-flight would make it look even more "scale".

And it's got the little Ozark Airlines tail markings !!

Best Regards

Al
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