Multirotor, multicopter and quadcopter discussion - The Drone thread

Doesnt a bigger mah battery = bigger size / weight?

Surely if they could put a 400 mah battery in there that gave better runtime they would?

They use a 240 one for the x4 i think and im sure i saw a 'humming bird' one that was 400mah - but it looked bigger. Twice as powerful but twice the weight?

I just went with the official hubsam battery and prop guard

340mah looks good not much bigger but 5x batteries means an hour ish of flight time :D
 
Finally had a chance where I could go outside in an open field with barely any wind and have a proper go with the X4 and wow what a blast!

I'm amazed at how high this thing can go and still respond to the controls. Definitely need to get a few batteries, although pleased with the flight time at around 8 minutes or so. I will need to sort out the calibration properly as it seemed it was able to go backwards faster than going forwards?? It would also drift backwards when letting go of the joystick.

Does anyone know if every time the X4 binds with the transmitter that it also does a calibration at the same time?
 
Finally had a chance where I could go outside in an open field with barely any wind and have a proper go with the X4 and wow what a blast!

I'm amazed at how high this thing can go and still respond to the controls. Definitely need to get a few batteries, although pleased with the flight time at around 8 minutes or so. I will need to sort out the calibration properly as it seemed it was able to go backwards faster than going forwards?? It would also drift backwards when letting go of the joystick.

Does anyone know if every time the X4 binds with the transmitter that it also does a calibration at the same time?
make sure battery is pushed all the way in and turn it on on flat ground + calibrate it :)
 
make sure battery is pushed all the way in and turn it on on flat ground + calibrate it :)

Thanks, will have to remember that.. Just thinking about it now I think it was because when I turned it on it happened on a park bench which would have been at a slight slope! I didn't re-calibrate which may have been my mistake. Just waiting for the batteries to charge up so I can try again!

I'm now on the look out to buy some more batteries, any recommendations? I have the H107L model, does it matter if standard X4 batteries are bought or does it have to be H107L specific?
 
I would say just buy the model in the manual from a hobbies tupe website. I got mine from wheelspin models.

Why isnt there big quad copters that are the size of helicopters or even rescue quads? Too instable or something or hard to fly?
 
Thanks, will have to remember that.. Just thinking about it now I think it was because when I turned it on it happened on a park bench which would have been at a slight slope! I didn't re-calibrate which may have been my mistake. Just waiting for the batteries to charge up so I can try again!

I'm now on the look out to buy some more batteries, any recommendations? I have the H107L model, does it matter if standard X4 batteries are bought or does it have to be H107L specific?

just get 5x 240mah batteries after reading online it seems the 330mah + would be detrimental to flight. look on the rainforest
 
I would say just buy the model in the manual from a hobbies tupe website. I got mine from wheelspin models.

Why isnt there big quad copters that are the size of helicopters or even rescue quads? Too instable or something or hard to fly?

Just no real benefits over a helicopter at that scale from what I can see. Multirotors work due to running electric motors that can change rpm quickly. Think once you scale it all up the batteries just can't keep up with the requirements from the motors.
 
Had a few go's outside earlier and immediately blasted it about 3 houses high :)
Still able to control it up there which i was amazed at but more sensitivity is needed. Did a few flips in expert mode and landed upside down a few times too (on grass) no damage from what i can see (yet) im sure it could survive pretty much any drop crash on grass but not concrete. Night flying is just as easy with the lights on.

Does anyone know the range? Ie, leave throttle on a bit so it doesnt take off, then walk away with the tx until the throttle drops - im presuming it drops otherwise if flying it would just continue out of range and be easily lost.

Can a steady controlled banked turn be carried out? Ie yaw, pitch and roll at the same time? I need more skill controlling the yaw (rudder)
 
Having some trouble setting up this kk2.0 (doesn't help the manual is a bit gash)!!

Receiver test is fine and all channels are zero. But when I arm the board and start to increase throttle, only one motor spins up? Is this normal? Surely all 3 need to spin?

Edit: when I throttle up the rear servo moves, that's not right it should move when using the rudder.

I've got the following setup;
(When viewing copter from the back)
Motor 1: left motor
Motor 2: right motor
Motor 3: rear motor
Motor 4: rear motor servo
 
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Well been having a go with the X4 when my dad hasn't been using it. Really impressed with it considering how small it is. Got a guard fitted whilst I get the hang of it and also because my mum nearly lost a toe...
 
Does anyone know the range? Ie, leave throttle on a bit so it doesnt take off, then walk away with the tx until the throttle drops - im presuming it drops otherwise if flying it would just continue out of range and be easily lost.

Can a steady controlled banked turn be carried out? Ie yaw, pitch and roll at the same time? I need more skill controlling the yaw (rudder)

Range will vary depending on conditions, I've never really tested it on mine. It's always been bigger than how far I can see when I'm flying it! Although I have had a mate fly mine out of range and it drop out of the sky. Couldn't say what the range was though, 40+ metres perhaps?
As to steady banked turns - yep the X4 (any any other quad) will do them fine. It's just a case of getting the muscle memory right for moving the sticks correctly. On the X4 for a banked left turn you'll have the throttle maybe half way with a bit of left yaw, the right stick will be a bit forward/left. Just play around with how far you move them until you get the angle right. It takes practise :)


Rhys - have you tried going full throttle? Sometimes some motors spin up later than others on the KK2.0. Do this with props off though! I think it is expected that the servo will move a little on throttle as it would need to angle to counter the rotation of other motors. Swap some motors/escs around to try different combinations to narrow down the issue if it isn't picking up with more throttle.
 
Well I think I've knackered one of the motors on my X4 already. When it builds up speed theres slight play in it that makes the whole copter shake :( Will order some spare motors.
 
Rhys - have you tried going full throttle? Sometimes some motors spin up later than others on the KK2.0. Do this with props off though! I think it is expected that the servo will move a little on throttle as it would need to angle to counter the rotation of other motors. Swap some motors/escs around to try different combinations to narrow down the issue if it isn't picking up with more throttle.
Thanks :-)
I've tried full throttle and it's the same, I've done some swapping about and recalibrated there esc throttle end points to no success.
The servo (turnigy 380MAX) still drifts to the right (from behind) :(
I've got an airplane model on the Tx (Futaba 8FG) and everything plugged into the KK and Rx correctly.
I'm lost :D

Edit: would a little video help?
 
Thanks :-)
I've tried full throttle and it's the same, I've done some swapping about and recalibrated there esc throttle end points to no success.
The servo (turnigy 380MAX) still drifts to the right (from behind) :(
I've got an airplane model on the Tx (Futaba 8FG) and everything plugged into the KK and Rx correctly.
I'm lost :D

Edit: would a little video help?


so its flying apart from the drift? cant you just trim that out?

When you say recalibrated did you do that through the kk2.0 board?

What about adjusting the filter setting on your servo? maybe that might solve it.

if its a digital servo make sure the speed setting is on high.
 
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