I’ve been waiting patiently for this video. Glad to see it uploaded for an afternoon coffee. Pushing play and sitting back for some enjoyment in the day.
Looks like something that should weight less than 100 grams :D either the size was not mentioned or I already forgot it. Oh, the smaller the plane the closer you need to fly it for not to make it look like a pixel like in 98% of the videos in general :')
Speaking of loud props, any advice on making quiet pushers? The clearance between the front (or back, but not an issue on pushers I'm building) of the prop and foam seems to make a big difference (and that makes sense to me), but it's not always practical to have a big gap between the back of the wings/whatever and the prop blades.
It really boils down to eliminating the turbulence in the airflow into the propeller. It's tough - you'll notice even the commercial pushers (avanti, starship, old lear fan) all had a distinct noise. Even the modern UAV's flown by the military with similar design work to reduce the drag to a minimum in front of the prop. I played around with putting the prop farther aft (prop strikes on pushers become an issue) but I found they were a little quieter - but still nowhere near as quiet as a tractor design. For that reason - my favorite FPV planes are twin tractors. They're quiet, and still have plenty of punch when you want them. The single engine pushers are nice in that they're easy to build (2 servos, 1 motor) - but it's tough to make them as quiet - and in a confined space requiring maximum performance to get out - you are limited in pitch unless you have a decent amount of airflow (airspeed). So everything is a compromise. Either way - thanks for your comment.
I'm cutting on a Gweike LC1290. It's a CO2 Laser currently equipped with a 100W tube. I use a CW5200 chiller, and the usual fume extraction / air assist. I may make a video on the laser and other tools. Thanks for your comment.
Looks great, going to be fun. Tlhank you.
I’ve been waiting patiently for this video. Glad to see it uploaded for an afternoon coffee. Pushing play and sitting back for some enjoyment in the day.
Looks like something that should weight less than 100 grams :D either the size was not mentioned or I already forgot it. Oh, the smaller the plane the closer you need to fly it for not to make it look like a pixel like in 98% of the videos in general :')
Size matters.
@@usefulaircraft surely does, but can't tell what the exact wingspan is, 50cm or 20" if that is the same as in your latest build video?
Speaking of loud props, any advice on making quiet pushers? The clearance between the front (or back, but not an issue on pushers I'm building) of the prop and foam seems to make a big difference (and that makes sense to me), but it's not always practical to have a big gap between the back of the wings/whatever and the prop blades.
It really boils down to eliminating the turbulence in the airflow into the propeller. It's tough - you'll notice even the commercial pushers (avanti, starship, old lear fan) all had a distinct noise. Even the modern UAV's flown by the military with similar design work to reduce the drag to a minimum in front of the prop. I played around with putting the prop farther aft (prop strikes on pushers become an issue) but I found they were a little quieter - but still nowhere near as quiet as a tractor design. For that reason - my favorite FPV planes are twin tractors. They're quiet, and still have plenty of punch when you want them. The single engine pushers are nice in that they're easy to build (2 servos, 1 motor) - but it's tough to make them as quiet - and in a confined space requiring maximum performance to get out - you are limited in pitch unless you have a decent amount of airflow (airspeed). So everything is a compromise.
Either way - thanks for your comment.
This looks great! Newb question, which CNC/Laser do you use for your foam parts? Maybe I missed it but a video on your favorite tools :)
I'm cutting on a Gweike LC1290. It's a CO2 Laser currently equipped with a 100W tube. I use a CW5200 chiller, and the usual fume extraction / air assist.
I may make a video on the laser and other tools.
Thanks for your comment.
@@usefulaircraft Thank you! I've got 3D printers and just learning about laser cutters and it's a whole new world. I'm enjoying your work and channel.
tried to become a member but your site does not provide a way
Think something is broke, I get access is denied by site owner.