Hi,

I made IRIS hover test today, here is some specs of the flight:

IRIS HOVER TEST

WX:

OAT    0°C - +1°C

Humidity   97%

Wind    3m/s

Precipitation  0,1mm/h snow

Pressure  977,5hPa

HW/SW:

Firmware   V3.1-rc7 Quad, Iris Parameter File - 2013.10.11

Flight mode: Loiter (auto)

TOW   1458g (3 cell 3500mAh stock battery + FPV/telemetry equipment)

VALUES:

Take-off time:   14:56:50

Landing time:  15:00:21

Take-off voltage  12,6V

Landing voltage  11,7V

Flight time  3min 31sec (211sec)

Voltage consumption 0,26V/min

MAh consumption  292mAh/min

RESULT:
Test setup estimated maximum hover flight time @ 10ft AGL (until 3.2V/cell)

11min 32sec

-Veikko-

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https://www.hobbyking.com/hobbyking/store/__9183__Turnigy_5000mAh_3...

Pack Size: 146 x 50 x 25mm

How do you think is it possible to fit such battery inside? It is 5 mm wider.

Or this:

http://www.amazon.com/Traxxas-2872-11-1V-5000mAh-Battery/dp/B005FUKQ2W

155x45x25 mm

It is 10 mm longer but wideness is good.

http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXBAKP&P=8

43 x 31 x 137mm

Which one can fit inside how do you think? May be it is possible to physically extand battery bay little bit?

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