Posts: 6,113 Threads: 172 Likes Received: 2,287 in 1,834 posts Likes Given: 4,737 Joined: Feb 2019 Reputation: 100 26-Apr-2023, 06:20 PM (This post was last modified: 26-Apr-2023, 06:21 PM by hugnosed_bat.) a 1608 by brotherhobby can handle them easy. personal i like my 1806 motors for any 4inch prop i tried. i flew 4inch for the most time on 1408 motors, that might be the smallest i would choose for 52 pitch. • Posts: 104 Threads: 11 Likes Received: 28 in 23 posts Likes Given: 101 Joined: Feb 2023 Reputation: 1 (26-Apr-2023, 06:20 PM)hugnosed_bat Wrote: a 1608 by brotherhobby can handle them easy. personal i like my 1806 motors for any 4inch prop i tried. i flew 4inch for the most time on 1408 motors, that might be the smallest i would choose for 52 pitch. They were making my 2105 GTS v3 motors very, very warm. Filtering heavy couldn't compensate. I thought maybe the motors weren't torquey enough for them, vut you are saying the opposite? Go smaller for high pitch? • Posts: 6,113 Threads: 172 Likes Received: 2,287 in 1,834 posts Likes Given: 4,737 Joined: Feb 2019 Reputation: 100 i dont say go smaller for high pitch: i wouldnt use a smaller motor than 1408 for a 4052. i fly or flew 4 inch on 1306/1404/1406/1505 these wouldnt be able to handle that big surface high pitch blade. i wouldnt go heavy. big motors require big batteries, more rigid frames... i belive 4inch rotors we have are to weak about high rpms or about weight. i never liked the 4052 by myself, i didnt get good results, even on 1806 where i spun heavier 5inch blades better. Posts: 1,489 Threads: 92 Likes Received: 574 in 468 posts Likes Given: 0 Joined: Nov 2020 Reputation: 27 I will talk to HGLRC to see if they can find some leftover 2006 3600KV in warehouse. 4032*3 is excellent stiff prop. Very durable. I had old LDARC 1806 I broke on frankenstein 5" ultralight attempt. After poor results, I also tried 1506 on 5" 33g frame. Back to 4". When you run high pitch.. l look for motors with lower resistance. But lower copper losses, usually means higher magnetic losses. Posts: 1,843 Threads: 203 Likes Received: 346 in 264 posts Likes Given: 306 Joined: May 2020 Reputation: 11 (26-Apr-2023, 03:16 PM)EyeBotXander Wrote: What motor and build would you use for a Gemfan 4052 flash prop? I’m currently using XNova 1804 3500kv with the Gemfan 4052 props on 4S with my Apex 4” and they spool them up nicely. I like the motors but the props I’m just trying out. Posts: 4,073 Threads: 75 Likes Received: 2,548 in 1,858 posts Likes Given: 3,949 Joined: May 2021 Reputation: 121 27-Apr-2023, 02:23 AM (This post was last modified: 27-Apr-2023, 02:24 AM by Lemonyleprosy.) (27-Apr-2023, 02:02 AM)romangpro Wrote: When you run high pitch.. l look for motors with lower resistance. But lower copper losses, usually means higher magnetic losses. If this is true, any idea why? Lower resistance should just mean lower gauge winding wire, or shorter winding wire, yeah? With shorter/less winding, I can understand how that directly effects kv- but I’m not clear on the effect of longer/shorter or higher/lower gauge on magnetic strength. I haven’t dived into rewinding motors yet, but I’m likely to soon, and this seems like it might be important information. Dangerous operations. Disclaimer: I don’t know wtf I’m talking about. I wish I could get the smell of burnt electronics out of my nose. • Posts: 104 Threads: 11 Likes Received: 28 in 23 posts Likes Given: 101 Joined: Feb 2023 Reputation: 1 (23-Apr-2023, 01:40 AM)romangpro Wrote: CNC 4 Carnage 4" 4mm frame with M12. You have me thinking about frames now. I spent all this time perfecting a build on an outdated frame, not fully realizing how heavy it is, focusing more on the positives (free to me, very durable, plenty of space to experiment, rigid bottom plate that helps with resonance and tuning)..... But for $30 I can swap frames, lighten the build substantially, and improve flight time. What other 4" frames did you consider before you settled on this one? • Posts: 1,489 Threads: 92 Likes Received: 574 in 468 posts Likes Given: 0 Joined: Nov 2020 Reputation: 27 Correct Copper losses.. = resistance heating 1mm thick wire .. 8 turns .. so lets say 8cm 2mm thick wire .. only fit 4 turns.. so 4cm Magnetic or iron losses is because of back emf and eddy currents. Faster you spin the motor, the more "reverse power" it creates, because its a generator.. when you move wire past a magnet it creates current. Posts: 104 Threads: 11 Likes Received: 28 in 23 posts Likes Given: 101 Joined: Feb 2023 Reputation: 1 (27-Apr-2023, 12:42 PM)EyeBotXander Wrote: What other 4" frames did you consider before you settled on this one? What other 4" frames did you consider for this build? Or were you solely interested in a carnage v2? Why not an Apex or another frame? • Posts: 2,361 Threads: 118 Likes Received: 812 in 659 posts Likes Given: 128 Joined: Feb 2021 Reputation: 20 (27-Apr-2023, 02:20 AM)Rob3ddd Wrote: I’m currently using XNova 1804 3500kv with the Gemfan 4052 props on 4S with my Apex 4” and they spool them up nicely. I like the motors but the props I’m just trying out. Looking for a set of those now.. pyrodrone is the only retailer I can find.. they have not had the 3500kv in stock for a while .. I just may either get the 3100kv or buy the t-motor 3400 KV (5m) 2.5mm inner shaft and hope for the best… • Posts: 1,489 Threads: 92 Likes Received: 574 in 468 posts Likes Given: 0 Joined: Nov 2020 Reputation: 27 30-Jul-2023, 09:13 AM (This post was last modified: 30-Jul-2023, 09:15 AM by romangpro.) (29-Apr-2023, 11:41 AM)EyeBotXander Wrote: What other 4" frames did you consider for this build? Or were you solely interested in a carnage v2? Why not an Apex or another frame? PickleFork 14g and Mutant4 broke. Code: 4" frames I have FC thickness motor holes weight Skystars 20/25.5 4 3 25.3 Carnage 20/25.5 4 3 47.5 Sanchez 25.5 4 2 xxxx PickleBig V2 25.5 4 2 17.7 Feichao 169mm LR 20/25.5 3 4 40.4 Pickle 2022 25.5 4 4 21.2
Posts: 1,489 Threads: 92 Likes Received: 574 in 468 posts Likes Given: 0 Joined: Nov 2020 Reputation: 27 (30-Jul-2023, 09:13 AM)romangpro Wrote: PickleFork 14g and Mutant4 broke. Code: 4" frames I have FC thickness motor holes weight Skystars 20/25.5 4 3 25.3 Carnage 20/25.5 4 3 47.5 Sanchez 25.5 4 2 xxxx PickleBig V2 25.5 4 2 17.7 Feichao 169mm LR 20/25.5 3 4 40.4 Pickle 2022 25.5 4 4 21.2
The "best" ultralight 4" frame. - at least 3 motor hole - battery strap hole. - curve braces - very light https://www.cncdrones.com/pickle-toothpi...ition.html Posts: 104 Threads: 11 Likes Received: 28 in 23 posts Likes Given: 101 Joined: Feb 2023 Reputation: 1 How do you like the carnage frame now? • Posts: 1,489 Threads: 92 Likes Received: 574 in 468 posts Likes Given: 0 Joined: Nov 2020 Reputation: 27 FYI Quad was built and field tested in 60kph+ in mountains. 4mm Carnage frame (about 45g) AxisFlying 2204.5 3500kv GF 4032x3 props GHF420 AIO 20mm Goku GN625 vtx SuperD 915Mhz ELRS Iim using Tattu RLine 850mah 130C 4S with XT30. • Posts: 1,489 Threads: 92 Likes Received: 574 in 468 posts Likes Given: 0 Joined: Nov 2020 Reputation: 27 21-Sep-2023, 02:24 AM (This post was last modified: 21-Sep-2023, 02:33 AM by romangpro.) https://ibb.co/WcHPqgb Carnage frame is super stiff. It has 20mm and 25.5mm FC options. But, only 1mm prop clearance to columns. There is no camera mount.. I used ziptie. There is hole for antenna but no mount. I use double straw. But typical 75mm uFL antenna is blocked by chunky battery on top. So.. Im going to get longer antenna and mount battery below. Finally, big ELRS antenna is a challenge. • |