Flight time and fail-safe settings...

[europe]

Hello again!
Just want to check wether my birds behaviour is normal...

It is a dual camera equipped Gaui 500XT with Naza GPS v1 on FW 3.12

I only get about 4-5 minutes of flight time before it goes into first warning (red flashes). About one minute later it descends. Resting at ground it immediately goes back to green light and if I like I can fly an extra minute or so. This voltage drop under load is bothering me...

I know that it is quite heavy (+2kg) but engines (Tiger) only runs moderately hot and I hover at about 40% throttle.

Since I have an Immersion OSD mounted I can monitor voltage when I get first warning and this seems to be around 11.1-11.2V. Strange since the Naza level is set to 10.7 if I remember correctly. Also - according to the OSD I have used only about 3000mAh out of the battery when it auto descends.

I use a Zippy flightmax 5800mAh 3s 40C battery.

Any suggestions what to do in order to improve duration? (I prefer not to go to 4s because of all onboard equipment running on 11.1v)

Regards!

 

[stitch1615]

Hello again!
Just want to check wether my birds behaviour is normal...

It is a dual camera equipped Gaui 500XT with Naza GPS v1 on FW 3.12

I only get about 4-5 minutes of flight time before it goes into first warning (red flashes). About one minute later it descends. Resting at ground it immediately goes back to green light and if I like I can fly an extra minute or so. This voltage drop under load is bothering me...

I know that it is quite heavy (+2kg) but engines (Tiger) only runs moderately hot and I hover at about 40% throttle.

Since I have an Immersion OSD mounted I can monitor voltage when I get first warning and this seems to be around 11.1-11.2V. Strange since the Naza level is set to 10.7 if I remember correctly. Also - according to the OSD I have used only about 3000mAh out of the battery when it auto descends.

I use a Zippy flightmax 5800mAh 3s 40C battery.

Any suggestions what to do in order to improve duration? (I prefer not to go to 4s because of all onboard equipment running on 11.1v)

Regards!

Consider lower voltages in the Voltage Monitor or don't use it at all.
On a some what smaller quad I decide to see just how long the battery would last and I did a hover
a few feet above ground without the Voltage Monitor.
I used one of the small voltage alarms that plug into the balance plug.
I gained almost 2 minutes more flying time on the same battery.
I believe the voltage monitor as a safety feature is rather conservative in nature
and a great idea but mine often went from first warning to second in just a few seconds
leaving me with a hike for retrieval. Now I use the timer on my Tx. (Not that I couldn't use the walk.)

 

[europe]

Ok, thanks. I'll post some new questions in a new thread. Found out some interesting facts regarding voltages...