Electric Ducted Fan Jets Discuss electric ducted fan jets here including setup tips, power systems, flying techniques, etc.

Project: GWS A-10 Warthog EDF Brushless

Old 04-16-2007, 06:10 PM
  #126  
Crash9
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That's good news paranoia. I agree the sound of 2 EDF humming from the A-10 is awesome .
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Old 04-16-2007, 06:27 PM
  #127  
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mmm.... one thing with the plane, with different speeds the Horz trim needed to be changed a number of times in-flight..... i gave up and tryed to keep the speed contant.... This made the landing harder.

i'm going to try adding Horz vs Throttle mixing on the next flight to help with this..... maybe a 6%?mix.

i like where the CG is now, (after the 2nd flight) ie if i move it forwards it will just make hand tosses harder.

Well this is my 1st EDF ARF, I love it! I was surprised how many people asked me about it, it really is an eye catching plane.

Last edited by paranoia; 04-16-2007 at 06:43 PM.
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Old 04-16-2007, 06:28 PM
  #128  
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And to think some people put a pusher prop on them. Its like putting a model T motor in a limo
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Old 04-16-2007, 06:34 PM
  #129  
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yep!

this may upset some people but, putting pusher props on scale/semi scale jet planes is just terrible! it should be outlawed!

if you can't fan it drop the project....... please..... get a flying wing or something.....
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Old 04-16-2007, 07:01 PM
  #130  
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What really cracks me up. They call them Jets
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Old 04-16-2007, 09:24 PM
  #131  
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And your electric motor with a plastic 5 or 6 bladed propellor is a REAL jet engine ?

You guys crack us up.
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Old 04-16-2007, 10:11 PM
  #132  
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haha, i know but it's better without a prop sticking out the back, my prop is in the cowl, it looks and sounds the part....

ps if i had the money for a twin jet engine model i'd buy it those babies are what 3K ea w/o the plane.....



haha you wouldn't see this guy with a pusher!
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Last edited by paranoia; 04-16-2007 at 10:28 PM.
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Old 04-16-2007, 11:36 PM
  #133  
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Originally Posted by Cyclops View Post
And your electric motor with a plastic 5 or 6 bladed propellor is a REAL jet engine ?

You guys crack us up.
US ?

A pusher is fine on a scratch built delta - ECT. but to buy a scale model thats a jet and abort it just ain't rite.
Why buy a jet if your going to put a prop on it.

Something is wrong in this picture.

Ken That has jets with fans and planes with props.
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Old 04-21-2007, 04:15 AM
  #134  
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see video here

http://www.youtube.com/watch?v=GvPWH4yuInk
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Old 04-21-2007, 07:28 AM
  #135  
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Originally Posted by paranoia View Post
haha, i know but it's better without a prop sticking out the back, my prop is in the cowl, it looks and sounds the part....

ps if i had the money for a twin jet engine model i'd buy it those babies are what 3K ea w/o the plane.....



haha you wouldn't see this guy with a pusher!
If you had a bit more wing, you could land like that. Small, efficient 1-seater homebuilts like the Cri-Cri have actually flown on those turbines.

Bill
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Old 04-22-2007, 03:32 AM
  #136  
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had some time today to do some weathering......

and painted the pilot, and glued in....
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Old 04-22-2007, 02:12 PM
  #137  
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Panel lines are looking good. The weathering looks like the Hogs do in combat. No time for glossy.
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Old 04-22-2007, 02:42 PM
  #138  
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Default Maybe twin engines ?

I am weighing the fan blade and a motor and I can justify the added weight. Complete DF55/ 300H motor is 3.0 oz...a GWS 2205 and just the 55 fan blade is 1.2 oz.

So even with extra wires and sheet Aluminum mounting brackets ,I will not gain much weight. With 2 EM300H motors and fans on 9.6 volts, GWS says about 11 oz. of [email protected] 58 watts each.
Or a total watts input of 116 watts input, for a worst case weight of 18 oz. Includes a second 9.9 V pack of NIMH.

What is a cheap brushless 3mm shafted motor that I could use to keep the thrust for 2 brushless at 11 oz. @ W O T on + or - 9.6 volts. 58 watts each @ W O T.---------Must be a USA company.

Who sells the small GWS Aluminum adapter to couple a 3mm shaft to the 55 impellor ?

I am not even trying to butcher the 2 55's I have. Use them on some other jets.

Thanks Rich.

Last edited by cyclops2; 04-22-2007 at 05:45 PM. Reason: Slow brain.
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Old 04-22-2007, 03:34 PM
  #139  
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Wow
My Feigao powered EDF 50 fans weigh 60 grams = 2.14 oz. for 2 with 9 oz. thrust each = 18 oz thrust on a 12 oz.
plane. But thats brushless and will be lipo powered. And did you hear the Paranoia EDF's ? Even sounds like a jet.
For a rockin A-10 you need brushless & lipo. God knows how much thrust he has but he is carrying much more weight than mine will. I thought about a pair of Wemotec Micro's with Hyperion Y22s 5000's but the $ changed my mind.$100.00 more than mine cost. Another way is the
Brushless motors & fan's from United hobbies. $15.20 for
a KDA 20-30 and $7.25 for a fan. $44.90 for power that should fly with underhand toss. My $0.02

Ken
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Old 04-26-2007, 08:17 PM
  #140  
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Exactly what does it take power wise to get a GWS A-10 to ROG, assuming landing gear with steerable front wheel, a little carbon reinforcing and WBPU as a thin surface shell? Vertical performance isn't a requirement, it just needs to ROG, fly some circuits with mild manouvers, then land. I'm still in the parts collection phase, $100 fans and $100 motors are out of the question too. Too many other projects to sink a ton a dough into a foamy. Any thoughts?
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Old 04-26-2007, 08:38 PM
  #141  
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1/4 mile Joe
I presume you bought a slope glider. # 1 what size are your nacelles. # 2 you have a PM

Ken
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Old 04-26-2007, 08:53 PM
  #142  
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joe 1320

my a-10 setup would ROG , my A-10 w/o wheels will slide along the ground, i maybe able to takeoff haha.... i need to find a feild with soft glass,

basicly any jet with +120Watt/lb. will rog very nicly...

the GWS 55 EDF are only 16ea and work great (but the impellers sometimes expand and rub on the inside of the duct), you will need a 20mm brushless motor (300 motor replacment) with +4000 rpm/V that don't draw more then 12amps, that way you can use the TP2000 pack to power the model, that pack fits in the fuse nicly.

i'm using the Razor Heli V2 motor, (same as the RZ-350) which you can get here http://www.neumotors.com/20061222/Razor%20Motors.html there only 60 ea!

Last edited by paranoia; 04-26-2007 at 09:19 PM.
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Old 04-26-2007, 10:02 PM
  #143  
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Originally Posted by bowtie hi View Post
1/4 mile Joe
I presume you bought a slope glider. # 1 what size are your nacelles. # 2 you have a PM

Ken
I have a kit with landing gear but no fans, two sets of 55mm nacelles. I was thinking maybe one set brushed, one set brushless. I already have a pair of 30A brushless ESCs, plus another 50A brushed esc for use with a pair of brushed fans. Whatever brushless motors I pick up I want them to be light. I do have one Mini AC1215/16 3800 kv 24mm that could be ideal for a 55mm fan, it has a carbon body and is light. i have a couple of Walkera 180Ls but those are pretty darned heavy and my bet would cause the nacelles to break away even easier.
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Old 04-26-2007, 10:05 PM
  #144  
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Originally Posted by paranoia View Post
joe 1320

my a-10 setup would ROG , my A-10 w/o wheels will slide along the ground, i maybe able to takeoff haha.... i need to find a feild with soft glass,

basicly any jet with +120Watt/lb. will rog very nicly...

the GWS 55 EDF are only 16ea and work great (but the impellers sometimes expand and rub on the inside of the duct), you will need a 20mm brushless motor (300 motor replacment) with +4000 rpm/V that don't draw more then 12amps, that way you can use the TP2000 pack to power the model, that pack fits in the fuse nicly.

i'm using the Razor Heli V2 motor, (same as the RZ-350) which you can get here http://www.neumotors.com/20061222/Razor%20Motors.html there only 60 ea!
That's great info, thanks!
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Old 04-26-2007, 11:06 PM
  #145  
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Those KDA 20-30 19 T 11 amp are only 50 grams and at $15.20 each hard to beat for a cheaper setup . If my 50 MM Feigao fans don't work the way I want them to thats how I'm going to go.

Ken
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Old 04-30-2007, 03:19 AM
  #146  
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Default Maiden Flights

Hey guys after some busy weekedns We finally got to try and test fly my sons A10 and my ME 262 . A10 flew great, My son did a great job and the only issue was the landing gear had issues upon a little hard landing--but other than that a great success, looks good and sounds good.!! My 262 was really great fast, great roll rate untill.....Upon powering up after a low pass to go around, had a funny sound kinda a pop and then one fan sounded alot different, the plane shuddered . After straight and level a tried to turn to bring it back and that's when things went south. I obviousy had some sort of aerdynamic issue as it did not want to turn real well in either dirrection and was really wanting to stall and drop the left wing. After fighting it for awhile, gravity finally won and the tail broke off, wing broke in half. It looks repairable. Know for the cause, upon spooling it up the left fan shed all but one blade, in the process the vibration caused 2 enternal mounts to break. It looks like the vibration caused the wing to crack just outboard of the nacelle and the left aileron the break the hinges and hang out into the airstream.---Sad day it has been a long while since I broke one that good. Has anyone heard of the happening with the gws fans??

Thanks
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Old 04-30-2007, 04:00 AM
  #147  
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I had issuses with the GWS fans coming apart at full throttle when using Brushless motors . I don't use there fan blades anymore. Post # 60 in here.
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Old 04-30-2007, 04:31 PM
  #148  
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Crash, which fan do you recommend? - Thanks
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Old 04-30-2007, 05:05 PM
  #149  
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Originally Posted by cosmonot View Post
Crash, which fan do you recommend? - Thanks
I've got these in my A-10. There a lot stronger : http://www.hobbypeople.net/gallery/109311.asp and they have adapters for different motor shafts as well. http://www.hobbypeople.net/gallery/109315.asp
I believe there the same as Hobby Lobbys "Little Screamers"
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Old 05-01-2007, 08:11 PM
  #150  
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Originally Posted by paranoia View Post
had some time today to do some weathering......

and painted the pilot, and glued in....
Paranoia,
Where did you get your pilot?
Rick
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