Top Flite Phasoar 035 - Manual (Page 4)

its size and quite easy to mount/install. It
swings a 7-3 or 7-4 propeller and accepts a wide
variety of battery packs.
There are other motors that w i l l fit into the
PHASOAR's nose, e.g.. the KYOSHO LEMANS 360, the
MABUCHI RS-380SH, and the ASTRO F L I G H T 020 Cobalt,
etc. We must, however, forewarn that these motors
are not going to yield the kind of high-performance
c l i m b - t o - a l t i t u d e that the PHASOAR has been
designed for. Decide now which motor you want to
use because you w i l l be fitting it to the fuselage
during construction.
The propeller choice always tends to be a function
of experience in flying the model. Therefore,
propeller sizes and diameters can and should be
"played with" to determine which one works best.
Our first recommendation is to seriously consider
a folding propeller. Since the PHASOAR is. in non-
powered f l i g h t , a sailplane, it derives a certain
amount of efficiency by being quite aerodynamically
"clean." w h i l e fixed-blade propellers work well,
the folding units tested performed better after
cutting power.
V. BATTERIES
Your PHASOAR's battery pod has been designed to
carry six (6) AA-sized batteries, or four, possibly
five (if configured appropriately), "Sub C" type
batteries. The capacities of these two battery
types can and do vary and i t is important for you
to know at least some of the differences. It is
also important to know that the current drain, when
using the ASTRO FLIGHT 035 Cobalt motor. Is higher
than that of a ferrite-type "can motor." Because
of this, it is appropriate to provide your model
with the best possible set of batteries, both in
terms of capacity and certainly in terms of weight.
Why worry about weight? The single heaviest, FIXED
WEIGHT item that your PHASOAR must carry aloft is
the battery pack. T h i s weight directly influences
the wing loading of the model which dictates how
the model behaves when the power is OFF.
The photograph shows the five (5) battery-pack
types and capacities that we've used to power the
PHASOAR.
First, on the left in the pod, is the SR 1250 mAh
"Magnum" 6-cell pack. Moving from left to right in
the row of five packs, is another SR 1250 "Magnum"
pack. The next pack shown is the SR 1000 pack,
then the SR 1000 pack in a 5 - c e l l format. Next is
the 4-cell, Sub-C SR 1000 pack, and at the far
right is a 5-cell pack made-up from Sanyo 800
cells. The weights for these units (all with
connectors) are as follows:
SR 1250 6-cell "Magnum" pack. . 7.43 oz.
SR 1000 6-cell pack . . . . . . 7.60 oz.
SR 1000 5-cell pack . . . . . . 6.43 oz.
SR 1000 4-cell Sub-C pack . . . 6.09 oz.
Sanyo 800 (mAh) 5-cell pack . . 6.52.oz.
These numbers are revealing, especially when tied
into the capacities (potential amount of power) of
each of the packs and their effects on the model's
wing loading. A l l five of these packs have been
used in testing the PHASOAR and a l l five have
worked w e l l . The best all-around battery pack has
been the SR 1250 (mAh) 6-cell pack, since it
provides the amount of power that the 035 Cobalt
thrives on. At the same time, i t has an acceptable
weight for thermal hunting w i t h the PHASOAR's wing
area (335 sq. inches) and resultant wing loading
(with this pack in place) of 11 ounces/sq. ft.
using the AIRTRONICS equipment or 10 ounces/sq. ft.
when using the FUTABA system.
To get the most out of your PHASOAR, in terms of
flying time, consider obtaining three (3) battery
packs. In this way you can be flying almost
constantly because one pack w i l l be in the model,
one pack w i l l be cooling and the third w i l l be on
charge. With only a single f l i g h t pack you could
conceivably have to wait 35 to 40 minutes between
flights.. Be sure to follow manufacturer's
recommendations for recharging the batteries.
VI. BATTERY CHARGERS
There are a great many chargers available for re-
charging Nickel-Cadmium batteries (Ni-Cads); too
many to test them a l l . We have had success with
the two we use and, therefore, recommend these to
you knowing that many others may work out just as
well.
For fast charging (15 to 20 minutes) the LEISURE
#107 AC/DC model works w e l l and can be either used
on your auto's 12-volt battery or plugged into a
110 volt wall socket. Great for quick charges at
the flying field.
For slow charging ACE R/C's DUAL-METERED VARI-
CHARGER (#34K32) is available in both k i t form and
pre-assembled. It allows two battery packs to be
charged simultaneously. Super when you have the
time at home to top-off the charge in each pack.
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