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TOPIC: 20mm Brushless EDF 'DH108 Swallow' Jet Build

20mm Brushless EDF 'DH108 Swallow' Jet Build 1 month 4 weeks ago #1093

  • nitrocharged
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Quick and nasty plug to form the canopy. :woohoo:



Roger comments: looks good to me, but you could have asked me for the original plug! :P
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20mm Brushless EDF 'DH108 Swallow' Jet Build 1 month 6 days ago #1122

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Getting close now. :)

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20mm Brushless EDF 'DH108 Swallow' Jet Build 1 month 6 days ago #1123

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Hmmm, looking yummy, can't wait for flight tests.

Roger adds:

this is indeed coming along nicely. One question: will control be by elevons only or rudder plus elevons? The reason I ask is that the 'Jetex' versions are excruciatingly sensitive to the elevons!

Jetex' versions weigh about 30-33 grams. How is the weight coming along? :dry:

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Last Edit: by rogersimmonds.

20mm Brushless EDF 'DH108 Swallow' Jet Build 1 month 4 days ago #1125

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Just the elevons for control. I used to fly micro pusher jets with elevons only so got good at controlling twitchy flight. ;)

It looks like the weight will come in at around 40g for the model and 9 grams extra with battery added. The next fan I make will be much lighter as I learn all the tricks for 3D printing models really light. This first fan unit is a bit of an oinker.
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20mm Brushless EDF 'DH108 Swallow' Jet Build 1 month 11 hours ago #1126

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The Swallow is now finished and awaiting its maiden. B)

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20mm Brushless EDF 'DH108 Swallow' Jet Build 1 month 6 hours ago #1127

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Hi Dave,

This is indeed a most interesting project which I hope will inspire others. One point: you could consider sheeting the nose of your DH 108 - it looks quite vulnerable to me as it is , especially if that's where the battery goes.:dry:

Should you wish to convert it to 'Jetex' we have some very nice motors that burn for 20 + sec! :lol:

I trust there will be a video of the maiden flight. I'm most interested to hear the sound of your tuned EDF unit as it 'unloads' in the air.
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