Search found 25 matches

by Bgt2u
Jan 08 2021 10:43pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Re: Suggested battery capacity for 30 min flight?

That is correct. I do realize that if l lost power, that unlike an airplane, l would drop like a rock, so yes, l will have battery percentage available to view, during flight.
by Bgt2u
Jan 08 2021 7:33pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Re: Suggested battery capacity for 30 min flight?

Dauntless, this is actually a VTOL, so, none of that would apply to the 30 min. flight time :) .
Thank you Hillhater, l will look into those sites. Once again, much appreciated.
by Bgt2u
Jan 08 2021 1:18pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Re: Suggested battery capacity for 30 min flight?

I will do some searching for reputable manufactures, as l do not want crap cells/packs, especially when my life could depend on their reliability. What l am going to do is power each motor with a seperate batpack, that way if one fails, l won't crash as fast....lol. l figure a 25ah-30ah batpack to e...
by Bgt2u
Jan 07 2021 8:54pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Re: Suggested battery capacity for 30 min flight?

Great explanation. NOW, at least l know where to start, on the battery issue. Thank you. That really helped. Yes, battery technology needs to vastly improve.....but for now, one must use what is available. So far l have found battery packs that are 60v (71.4v) @ 50Ah, (that should be 3.57 kwh per pa...
by Bgt2u
Jan 07 2021 7:02pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Re: Suggested battery capacity for 30 min flight?

Thank you that helps a lot. Yes, we are just guessing on what 'continuous' is. I would assume that the 180 seconds of use would go up dramatically if run between 50-65%, however, only real time testing will tell. I guess anything below 100% throttle would have add to the pathetic 180 seconds. On the...
by Bgt2u
Jan 07 2021 6:21pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

How do you figure the 8218 is running at 1/2 capacity, or less? This is good news then. If that is indeed correct. Not that l am questioning your abilities, l just wonder how you came to that conclusion. If this is true, then l would not need 12 or more motors, would l?
by Bgt2u
Jan 07 2021 6:11pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Thank you for all the help!

I would like the members on here to please understand, that as of 5 days ago, l had absolutely no knowledge of anything to do with motors, esc's, propellers, etc. I have however, built a few small custom made 72v electric cars, but, this is obviously very different, and challenging. Even though l am...
by Bgt2u
Jan 07 2021 5:33pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Re: Suggested battery capacity for 30 min flight?

All of the information is found on this page under 'performance data'. https://www.kdedirect.com/collections/uas-multi-rotor-brushless-motors/products/kde8218xf-120 I then took the 50%-85% thrust isted (under 59.9v) and multiplied that by 12 and 14 motors, and then converted Kg's to Lbs. I would lik...
by Bgt2u
Jan 07 2021 12:28pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Re: Suggested battery capacity for 30 min flight?

Wow, all of thsee comments have me thinking that l chose the incorrect motors. All of the figures below are with a 30.5" prop on the KDE8218-120 motor. # of motors - throttle - thrust/Lbs 12 - 50% - 239.64 12 - 62.5% - 323.28 12 - 75% - 420.6 14 - 50% - 279.58 14 - 62.5% - 377.16 14 - 75% - 490...
by Bgt2u
Jan 06 2021 10:22pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

Thank you. You obviously took some time to figure all of that out. I guess l could go with 12 motors, three motors on each side, with the motors stacked on top of each other back to back with one prop on top, and one on the bottom contra rotating.....but will that set up lose thrust?
by Bgt2u
Jan 06 2021 9:57pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Re: Suggested battery capacity for 30 min flight?

Wow, l guess my figures were a bit off. I had calculated that a 48v, 50Ah lipo pack should give me 23.52Kwh, for almost a 30 minute flight time, and weigh about 40 lbs.....was that even close, if not what do you think the flight time would be with that lipo pack? Or how many of them do you think l w...
by Bgt2u
Jan 06 2021 9:13pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

Oops, yes, that was a typo...l corrected it. I started another post, as this topic no longer pertains to the Nue motor 8000 series. I was posting it, while you were replying to me. Yes, l am going to use the two blade props, that way l can experiment with 3 or 6 blades, on the 6 blade hub. The motor...
by Bgt2u
Jan 06 2021 9:08pm
Forum: Electric Aircraft
Topic: Suggested battery capacity for 30 min flight?
Replies: 24
Views: 747

Suggested battery capacity for 30 min flight?

I am building a personal manned VTOL, and am using 8: KDE8218-120 motors, and 3010 props. It should weigh about 400 lbs, with me in it, and l am trying to figure out what capacity lipo packs that l would need to get approximately 30 minutes of flight time. I would ultimately like to use 8 battery pa...
by Bgt2u
Jan 06 2021 8:46pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

One question comes to mind.......Why are you trying g to lift 1200lbs?
by Bgt2u
Jan 06 2021 6:58pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

Wow, thanks again for the detailed information. 300 volts, what the heck are you building...a flying city...lol? Okay, my next question is: Given these motor specs, how much run time do you think one motor would run on a 60v 50Ah lipo pack? Motor: KDE8128-120 Constant motor velocity: KV120 Constant ...
by Bgt2u
Jan 06 2021 12:30pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

Thank you for the detailed answers. I have constructed a thrust stand, with rpm, and amperage monitoring capabilities. I just haven't purchased any props yet. I have a KDE prop adapter, so l can use 2, 3, or 6 blade configurations on it. As you know, props aren't cheap, so l needed a 'ballpark' star...
by Bgt2u
Jan 05 2021 10:26pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

Okay, here's an update. I am going with eight 30" or 30.5" props. I do have a couple of questions though. Is there much, if any difference in thrust, between a 3010 prop, and a 30.5"x9.7? Also do noise reducuction props with angled ends have as much thrust as non noise reduction props...
by Bgt2u
Jan 05 2021 8:42pm
Forum: Items Wanted
Topic: DIY - VTOL Drone Ultralight
Replies: 3
Views: 1748

Re: DIY - VTOL Drone Ultralight

Yes, and no.....but l do now....lol.
by Bgt2u
Jan 05 2021 7:58pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

I agree the 30.5" prop should require less power. I got the information of of the KDE site: https://cdn.shopify.com/s/files/1/0496/8205/products/KDE_Direct_XF_CF_Brushless_Performance_Testing_KDE8218XF-120.png?v=1566595147 . From what l can see, at 53.9v, the 24", and 27" props are ac...
by Bgt2u
Jan 05 2021 2:58pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

Yes, the safety factor is just about zero, however, l will be using redundancy, such as, even if TWO motors fail, l would still be able to land. I probably never will go more than 10ft or so off of the ground. I am not saying never, but most flights will be flying around the open fields by my house....
by Bgt2u
Jan 05 2021 6:07am
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

Okay, got it. Thank you for clearing that up for me. I also am not a big guy, l weigh 130Lbs, and am 5'5"....so that helps. Since l wrote my original post, l came across ten KDE 8218-120 motors, really cheap. Do you think that they are a good choice for my application? From my calculations, the...
by Bgt2u
Jan 04 2021 11:48pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Re: Neutronics 80 series motors for manned VTOL?

Thank you for the responses....they do help. As far as doubling the thrust needed for the weight, l always thought that you should only be flying at 50-75% throttle, and not at 100%, so l was doubling the nedeed thrust accordingly. Is that not correct?
by Bgt2u
Dec 29 2020 4:39pm
Forum: Items Wanted
Topic: DIY - VTOL Drone Ultralight
Replies: 3
Views: 1748

Re: DIY - VTOL Drone Ultralight

I believe the prop is a carbon fiber 3010, and the motors are either 12090, or 120100. I do not know the exact brands of either. Freerchobby sells these style motors (MP12090/MP120100) and ehobby has the equivalent (EP12090/120100). I hope this info gets you in the right direction.
by Bgt2u
Dec 29 2020 4:09pm
Forum: Electric Aircraft
Topic: Help needed for manned VTOL
Replies: 25
Views: 503

Help needed for manned VTOL

I am building a one manned personal VTOL vehicle. It will only be for my own personal use, and have a 20 minute flight time. It will weigh approximately 300-350Lbs, with me in it. I was considering using 6-8 Turnigy 150cc, or 6-8 EP120900/120100 motors, with 30"-36" props, and then l came ...
by Bgt2u
May 31 2020 11:43pm
Forum: Motor Technology
Topic: Controller for ME1202 motor
Replies: 3
Views: 386

Controller for ME1202 motor

Hello, l just purchased a Motenergy ME1202 motor, and am looking for an appropriate sine wave controller for it. I will be running either a 48v, or a 72v set up, (but as of right now, l am undecided). Are there several contorollers that will work for it, or does it require a specific controller? I h...