Hey guys, 

I´ve completed a F450 build using Pixhawk 2.4.8 with 2212-1000kv motors and 30a ESCs SimonK the basic ones usually seen on the Chinese kits using 1045 props.

It works fine, but there is something I noticed here about the stability:
1 - Climbs great.
2 - Hovers great
3 - but When I try to descend I see some stability when the quad tries to autolevel. 

My first guess would be the accelerator calibration, but I don´t think it´s the case because it works smooth on all other situation.
Here is the flight data: http://logs.px4.io/plot_app?log=dfe9dd9f...cd354d7342

Any guess on what could be causing this ?
I also don´t know how to set HomePoint, does it work automatically when you arm the motor ?

Thanks

Yep - the homepoint is the GPS location when armed.

My APM 250 has/had some propwash wobbles on descent when doing and autoland. I simply manually descend it once it's hovering above the RTH point either with some forwards/backwards/sideways motion or just do it while it's still in the RTH path. I RTH at 25m though which does make the autoland a bit painful if it really gets the wobbles.

Definitely much better after resolving some vibrations issues and much worse in windy conditions.

I also noticed the motors are hot when I land, not VERY hot, but comparing with my mini racing quad they are hotter. 
This F450 is a very simple build, other than strip leds nothing was added to make it heavy. Also the fly style is very smooth at this point, not full speed, or full throttle to climp. How normal is this ? 

I feel it doesn´t respond quickly when I´m descending and give throttle back to climb, maybe these motors don´t have enough torque to handle these 1045 propellers. However this is the standard motors for this basic build, it should not be a problem I guess.

 I´m about to receive a new kit with 2212-920kv, in theory more torque than these 1000kv. not sure if it will make any difference.

Could just be some very average bearings OR undersized wire used in the windings of "cheap" motors.

I've often thought that buying cheap motors and rebuilding with top quality bearings may not be a silly idea as good bearings are still "cheap" compared to "better" motors.

I'll have a look into this possibility. Make sense.

I always used the dji e305 for the f450 size. My motors don’t get hot. I use double battery setup. 2 v tx setup. Left and right hand circular antenna. When you descend don’t try to drawn straight down. Move it back and forth.

(27-Jun-2017, 03:04 AM)flabombarda Wrote: I also noticed the motors are hot when I land, not VERY hot, but comparing with my mini racing quad they are hotter. 
This F450 is a very simple build, other than strip leds nothing was added to make it heavy. Also the fly style is very smooth at this point, not full speed, or full throttle to climp. How normal is this ? 

I feel it doesn´t respond quickly when I´m descending and give throttle back to climb, maybe these motors don´t have enough torque to handle these 1045 propellers. However this is the standard motors for this basic build, it should not be a problem I guess.

 I´m about to receive a new kit with 2212-920kv, in theory more torque than these 1000kv. not sure if it will make any difference.