Djinn F25 - AMAZING Freestyle drone under 250g 

I am really tempted to try 6s on it, hmm.

nice, what 6s batteries are you using? and whats the total weight? just in case i want to convert to 6s in the future :D

I use 380 most of the time and get about 2.5 to 3 mins of flight time only at weight of 236. The 650 battery will double flight time and weigh 279. 650 is awesome, but 380 will keep you under 250. Cheers.

Thank you very much 🙂 10k seems so far off. But I'm just thankful for each of the 974 i currently have 😁 Thanks for following and watching. 😁😁

Nice! I have thought about going 6s, but I've chosen to make sure it is below 250g. What were you missing since you went to 6s? Was it just the voltage sag, or some power too?

thank you very much. i will try your suggestion :)

its super nice :D

hey, no worries. i really wish i could help you, but i'm not vary familiar with the cameras for analog. l When it comes to antennas, foxeer makes pretty good antenna, and for analog, it seems most people are using RHCP. really wish i could help. the next best thing i can do is send you towards joshua bardwells channel, or website, you can check up on his recommendations for analog here : www.fpvknowitall.com/fpv-shopping-list-goggles-video-transmitters-and-cameras/ sorry i couldnt help more.

for 2.5 inch props, with a 4s batter thats 16.8v and a kv of 4600, gives a theoretical motor rpm of 77280, which with a 2.5" propeller, ends up being a mach 0.74, max performace is just around 0.8 so im not too far off. while using a 3000kv with a 4s battery is 50400 rpm, which is mach 0.48, which in my opinion is a little low. with a 3000kv i would go with a 6s battery which would equal to mach 0.73. which is is good too. the reason is that i had the 4600kv motors as 4s batteries in this size. if i had nither i would consider going for a 6s build if i could get it below the 250g limit as well. and in that case i would go with something like 3000kv.

@@RaukFPV wow! it makes a lot of sense! Thanks 👍

Using your spec as reference, I ordered 1404 4600kv for 4s as well. May I know where do you get that Mach for max performance and actual value you get from your build?

i use the theoretical approach, the calculations are (prop diameter in inches*pi)*((kv*voltage)/60)=speed in inch/s then use a converter to get from inch/s to m/s and then from m/s to mach. (there are websites that does this for you) there will be some variances to to altitude, temperature and such, but as a theoretical approach its a guideline. so for my 2.5 inch build it looks like this (2.5*3.14)*((4600*16.8)/60) = 10110.8 inch/s or 574.477273 mph or 256.81432 m/s or Mach 0.74873 as we get closer to mach 1 (speed of sound) the propeller gets a of noise and strain, so in general we want to stay a bit lower. and there's a bit of personal preference when it comes to propeller speed as well. some will get closer to mach 1, the props will be screaming. while others want a more lower power build. it also depends on what you need, for freestyle getting somewhere between mach 0.8-0.9 seems good, while for cinewhoops we can go lower as we dont need so much of the top end. hope it makes sense :D

Hey, Quadmula have made these available here: www.printables.com/model/616992-quadmula-djinn-f25-series i also used the receiver antenna mount from the f3 series. www.printables.com/model/314165-quadmula-siren-f3-series/files Those are the ones i've printed, hope this helps :)

It's pretty much the same as any other drone. Most freestyle drones are made the same way. This one is just a little smaller. Is there anything specific you need in a tutorial, or is it just a general tutorial for building this?

@@RaukFPV I will go with MurdersFPV tutorial for the quadmula f3 frame build. It's the closest thing I could find. And with some help from our lord Joshua Bardwell should probably do it. But the fear of the first build still remains :D better get to it then :)

It sounds like you did your research. :) Don't be afraid, just take it slow, and I'm sure you can do it first try!