Recent content by APL

Thanks for your experience with props and noise levels amberwolf, I would think the props should be separated by some distance as well, and the noise level of these things has always sat uneasy with me. It would be nice to have a quiet lifter for once. I have always liked the 'electric' DIY...

I was thinking of both fans in the same duct, like this image. From what I gathered, the top prop is powered less than the bottom one. But yea, trying to power both fans without inner and outer drive shafts won't be very clean, and with the drive shafts the motors won't be cooled. Looking...

Thanks red, I should build something relatively normal, I do tend to get carried away, ha!, and it's always fun to speculate. I agree that the counter rotating impellers might be the best thing going on here, and I need to get back to that idea. I have to figure out how to get air to the bottom...

Yes, I wonder about the efficiency, there's got to be a reason why 4 prop drones won out. I'm thinking weight and the fact that they are probably not very good in the wind. with all that area. But it all depends on use I guess, and being able to get close to things is a big plus,.. your right...

I like things that hoover, I don't know if I would ever get around to a human size version, but you never know. One you could ride on would make an awesome leaf blower for the yard though! :D On a more serious note, we can always use ideas for safety against things like floods, tsunamis, and...

Bingo! Thanks amberwolf, that's exactly what I was looking for! I knew that this had to have been done before and that I was probably trying to reinvent the wheel. :| (Either that, or it simply had no chance of working.)...

Thanks red, I am enlightened. That 14 psi air pressure thing is freaking me out,.. in fact this whole thing is freaking me out. :wink: Not used to thinking about lift this way. A stationary wing is definitely an odd duck. There's a lot of square inches under a wing, and 14 pounds for every one...

Awesome news guys, looks like the wing-thing is still flying. (theoretically) Amberwolf, you talked about airspeed, and I've been struggling with thought experiments on what that might be for something like this. I know there's tons of formulas, and it's been a well beaten path for the last...

Thanks for the awesome info red :thumb: , I expected to see this craft in a heap of rubble this morning, but so far it just has some good size bullet holes in it. :) I've seen the Avrocar and Vought V-173, but the Avrocar is apparently a vertical thrust fan with some side ducting, (might be...

Fun, fun, fun. I've been thinking about a ducted circular wing lifter for years, but recently the idea of a counter-rotating coreless axial prompted me to draw one up. Seems to fit together nicely, has balance and symmetry, but,.. does this thing have a chance in hell of getting off the...

No problems with the throttle response electric_nz, go for it and let us know how it goes. The more info the better. Thanks for the info E-HP, glad to hear you've had experience with one of these controllers too. I couldn't see any difference with the soft start jumper either.

Sorry for the late response flez1966, I need to check in more often. I've been busy with some non-E bike projects the last few months. :lowbatt: No, I haven't found any software for it, in fact it's hard to find any info for it other than a few advertisements and a short wiring video. I think...

Beautiful, that's looking really tight and professional. :thumb: Super nice machine... Bring on the copper!

Got it. Just curious, I don't remember building anything with multiple FETs, and a Google search wasn't very clear on the drain/tab connection. Figured as much, but also know that they won't invest one more penny than they have to, so sometimes improvements are easy. I'll leave well enough...

I never really intended to pedal it, mostly for the lawyers, but it has got me home a few times. It has a set of super short cranks on it which doesn't help,.. I should try some longer ones and see what I can get away with for clearance, and your right, I should fool around with the front...