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Jan 31, 2013, 09:44 AM
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Led Zepplin
looks nice, very clean work
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Feb 01, 2013, 08:52 AM
Fly, dangit!!!
Led Zepplin's Avatar

General EDF Question...


Thanks au117. It is a very nicely designed model, I hope I can finally get some time to complete it soon!

I do have a general question about these small EDFs. I did balance the fan per NitroCharged's tutorial and it worked out really well. I had it to where there was only a minimal vibration at full throttle. When the impeller came off, I pushed it back on but then it was horribly out of balance and it flew of again. Last night I got a few minutes to test it and ran the motor up to full without the impeller and it seems the motor itself is producing a fair amount of vibration. I think I had the impeller set in the correct position to offset the vibration from the motor. So, somehow I need a way of fixing the impeller to the shaft so that I can re-balance it. What's the best technique? I was thinking of getting a bit of sandpaper and roughing up the shaft a bit and then using some UHU glue to secure the impeller. Should I use glue? If so, what's the best type of glue? TIA

J. B.
Feb 03, 2013, 07:36 PM
Registered User
I have used a dremel with a thin wheel to rough up the motor shaft and then ca. I have also had a hard time getting them off after this.
Last edited by au117; Feb 03, 2013 at 07:48 PM.
Feb 10, 2013, 08:27 PM
Registered User
au117
We drove over to E-fest Saturday to see and talk to you about your F-35 and the F-22, but Frank told us you and Dave was not there.
Sorry we [5 of us] missed you and seeing the planes preform.
Jack
Feb 10, 2013, 11:35 PM
Need 4 Speed!
pdawg's Avatar
Au117,
Congrats on taking first place (for the 3rd time) in the scale competition at E-fest! It's quite an accomplishment winning an event with Judges from Top Gun and Scale Masters! Happy to have you and your skills in this forum!
Feb 11, 2013, 02:36 AM
Team30 Micro EDF
NitroCharged's Avatar
jfassino (jim) over in the efest forum snapped a shot of it.

Well done.
Feb 11, 2013, 07:16 AM
Registered User
thanks
NitroCharged, Pdawg
Jack Brewer
Sorry i missed you Jack. I had the 35s there but never flew them, too crazy with unlimited pilot stations. I just competed in scale This year 1 flight all day.
Last edited by au117; Feb 11, 2013 at 12:30 PM.
Feb 11, 2013, 10:22 AM
Registered User
Thanks au117.

F 35A (1 min 9 sec)
Feb 12, 2013, 10:56 AM
Fly, dangit!!!
Led Zepplin's Avatar
Holy smokes that is a great looking Vimy!!!

Another quick question: So, I have just gotten too frustrated with the 27mm AEO fan. I should have listened to you guys in the beginning!

Anyway, I went on and ordered up an extra 12mm motor and a Hyperflow fan unit. Once I get it in, I can measure it make a plug for the bell mouth, but what about the rest of the duct/stators? Should it be just a straight shot, or does it need to reduce down at all? In au117's pics it looks like it reduces down a bit, maybe 10-15%?

J. B.
Feb 12, 2013, 11:42 AM
Registered User
Yep 10 %
Feb 12, 2013, 10:54 PM
Registered User
DoubleOne's Avatar
Au117,

My battery finally came in for the 150% F-35C that I built from your plans with a 50mm EDF. I flew it today, although quite windy, and I have to say it flew better than any airplane I've ever bought. CG from your plans was spot on, and the graphics/overall design looked gorgeous in the air. I can't thank you enough!

I am currently building a 300% F-35C now...mainly based off your plans. Thank you again!
Feb 13, 2013, 09:36 AM
Registered User
DoubleOne
looks nice good job and your 68 mm f35 looks nice also keep up the good work.
Feb 13, 2013, 10:39 AM
Field Darter
bobbyhigh's Avatar
Hey Feco, where did you get that cool EDF and vector cone? How many mm is the EDF?
Feb 18, 2013, 01:23 AM
Registered User

ring 0.3mm carbon fiber sheet
cone 5.25 floppy
Feb 19, 2013, 09:19 AM
Field Darter
bobbyhigh's Avatar
Impressive adaption there. How did you manage to balance/secure the impeller on the motor?

What's the thrust from this 30mm edf?


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