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Spectrum and JR 2.4 Systems
We have found that the 2.4 Spectrum system is the most
responsive radio system that I have ever flown. The
plane reacts almost instantly to inputs. During a training
session, one of the trainers was about 4 feet off the deck
when a crosswind gust swept the wings 90 degrees.
Amazingly, we were able to correct and land without a scratch!
Power requirements to the receiver are more critical than with
the old systems. I can prove a 4.8 volt battery pack is not
inadequate! All 2.4 systems require a 6 volt system with a
minimum of 1500 mah! See below #5!
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After personally
flying the Spektrum 2.4 I have found that the battery
voltage must be above 5.0v with a 1 amp load (4.8 system).
Otherwise
the system will range check at 60 feet or less! Solution:
Install a 6v 1500mah
receiver and recharge at 5.7v or greater.
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Spektrum Air Receiver Power
Requirements CLICK
HERE!
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How to bind if
using "non Spektrum" battery/binding harness; Simply plug
your battery into an unused receiver channel, then plug
the binding plug
into the receiver battery position. Bind the system and then
return the
battery connector to it's normal position.
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The Spektrum team
realizes that the charger
included in the
DX7 is not
optimal for
charging the Tx battery in a
convenient,
overnight fashion.
Although
the current charger works
adequately
with additional charge
time,
future production will
include the higher
rate charger as referenced
in the instruction manual.
If you intend
to use the 50mah charger,
please
increase the charge
time to 30 hrs
for the Tx and 22hrs for the
Rx.
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 After
using a Hangar Nine Digital Servo & Receiver Current Meter
there are some
important
facts that have come to light!
1) A "ESV" or battery
checker MUST have
at least a 1 amp load! Most only
do 250 to 500 mah, not
near enough!
2) A four servo system, using Hitech 325HD BB servos, sags 1.49
amps
when all are in motion, ON THE GROUND! So why is this
important? For
years I've heard pilots say "I've been hit"...well looks like
that they have
been under powered! The Spectrum receivers have brought
this to light
because there is a delay in function after a severe voltage "sag".
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Use a Digital Variable Load
Voltmeter with a
setting of at least 1 amp for
analog servos and non -aerobatic flying and use a 2 amp setting if doing
3-D, etc.
4.8 battery
packs don't have the ability to stay above 3.5 volts
once they
get down
below 5 volts. So if you're new to this hobby, quit
buying
4.8 packs and
go with 6 volt power. You can't charge these packs
with
the wall warts
so go with stand alone 12v multi purpose charges like
Triton or
others. |
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SPEKTRUM
