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

Quick and nasty plug to form the canopy.



Roger comments: looks good to me, but you could have asked me for the original plug!

Getting close now.

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?

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.

The Swallow is now finished and awaiting its maiden.

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.

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

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.