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307 airliner
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Our kits are designed for the serious modeller with a little
advanced knowledge.
The 307 is a technical model with many parts. The
construction methodology used in our models is unique in the
modelling industry. Our method provides a model that is easy to maintain
with the ability for part replacement.
Construction
A comprehensive manual is provided showing step-by-step
assembly. There are no wooden parts in this model. You will be
required to have some basic workshop engineering skills such as being able
to use a drill press and tap threads. Construction is a solid
project which will keep you busy for 4 - 6 weeks depending upon your
skill level. All surface finishing material is provided with the exception
of paint. All hardware such as nuts, bolts, and control rods are
provided in the kit.The 307 is a "work-in-progress" model. For this reason
EDFmodel reserves the right to alter design
specifications without notice.
See our construction article
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Wingspan 6.5 ft (1970 mm)
Length
6.2
ft (1895 mm)
AUW 9.2 lbs
(4.2kg) |
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Fuselage
The fuselage shells are vacuum molded. The fuselage shell is
loosely assembled to formers and a carbon chassis. Upon impact
the shell can move slightly to absorb some forces. The model is either
handled under the wings or at those points along the fuselage with
formers.
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Fans &
nacelles
The 307 nacelles are
designed to fit the WeMoTec Midi fan (90mm intake diameter, 5 mm motor shaft
adapter). The nacelles are
designed for easy maintenance with a good impact strength. This has certainly proved
itself in test flights. |
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Wings
Five piece design
built up as one complete wing, Clark-Y section, CNC cut styrene, carbon
spars, wing area 5.4 Sq. ft. Wing upper surface is plastic covered with
gap-less aileron hinging.
Control surfaces All moving tail
plane and outboard ailerons.
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Retractable
undercarriage
The 307 is supplied with t welve rear 1.5"
foam
main wheels and two 1-1/4" nose wheels. This
combination will easily take-off from well trimmed grass (as illustrated
in flight videos April 2007).
The kit is designed to accept Robart mechanical retracts, which are
required to be purchased separately. The main wheels retract into a
wheel bay. The kit includes all components required to assemble the
Robart retract units.
The retract door mechanism designs are left to the individual
modeller as a completely separate design project, not covered in the
manual.
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Decals
A standard set are supplied
that includes the fuselage doors, windows and the cockpit windows. It is
left up to the modeller to design their own airliner livery
decals. |
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Transportation to the
airfield
The one piece wing and fuselage will easily fit in a
family wagon car (rear seats
down). |
Video -click to
image
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Third flight
series trying out U/C options & various
improvements (10.9 Mb wmv format) -15th April 2007
Taxi
from pit, travel runway, turn and take-off. This video is interesting
because it shows twelve 1.5" rear main wheels will easily rotate from
trimmed grass. |
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Second take off and taxi -short file. (4.5 Mb wmv format) -15th
April 2007. |
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Second
flight series trying out various control
parameters (4.3 Mb mpg format) -23rd December 2006
Close up of grass runway taxi followed by short & fast
grass take-off.
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307 maiden flight (4.5Mb mpg format) - 8th December
2006
Take-off and landing. Flown in strong gusty winds off a grass
runway.
With full power used for
take off and with a thrust to weight ratio of 75% it
appears as a rocket ship. Easily controlled in the gusty winds. Two
successful flights of around 5 minutes with power left. At this point still fixed U/C.
7s 3300 mAh used. No rudder and not required. Tracks well on ground. On a nice claim
day, I would expect some really nice footage especially on landing. Good
range of speed and flew well. Note a set of eight wheels used for the
maiden flight. A thank you to Geoff Pinkerton.
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Video
camera on board 307 taxing (5.7 Mb) - November
2006
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First taxi tests (5 Mb) - November 2006
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307 airliner gallery -click to advance picture
Hardware required
Additional major equipment required
to be purchased separate
from the 307 kit includes motors, speed
controllers,
batteries, servos and the retractable landing gear.
We can supply fans, motors & controllers.
WeMoTec Midi fan |
Fans
Two WeMoTec Midi
fans required.
90mm intake diameter
5 mm
motor shaft
adapter |
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Com
Pro TMM 5024-3 OPTO
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Speed
controllers
A pair of 50 Amp speed
controllers such as the Com Pro TMM 5024-3 OPTO 1-8 LiPo cells.
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Typhoon 600-33 Brushless motor |
Brushless motors
Two Typhoon 600-33 brushless motors in
parallel.
Diameter 36 mm (1.42")
Length 70 mm
(2.7")
Shaft Dia. 5 mm
Weight 205 grams (6.8 oz)
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Robart nose
retract 602
Robart rear
retract 600
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Retracts The kit is designed to
accept the 600 & 602 Robart mechanical retracts.
Nose
retracts
Robart Part #602. Nose with 1/8" 90 Deg. wire strut.
Rear retracts
Robart Part
#600. Mains with 1/8" 90 Deg. wire strut.
Constructed of glass-filled
nylon, these units have a positive up-and-down lock. It should be noted the manufacturers
of these units state that they are suitable for up to 5 pound models
but our tests with this unit in the 307 & 309 appear to prove
they may be suitable. Four HS-56HB micro servos are used for the retract
operation.
These retracts can be seen at http://www.robart.com/retracts/2-5lbMech.aspx
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FlightPower 4S1P 3300 mAh
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Batteries
A total of 7s1p using a separate 4s1p and
3s1p FlightPower EVO 20
3300 mAh 20-30C (50 bursts) batteries in
series.
Flight power
batteries are distributed by Atlantahobby.com in the USA
www.Atlantahobby.com
The
recommended batteries may be purchased from this US site.
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HS-56
HS-85MG
HS-77BB
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Servos
1 x Hitec HS-77BB standard (aileron)
1 x Hitec HS-85MG sub micro servos (elevator & nose steering)
4 x Hitec HS-56HB feather standard servos (nose retract)
Hitec vertical servo mounts part number 56306 are required
but should be packaged with the 85MG servos -check to ensure.
Hitec servos may be seen at www.hitecrcd.com/servos/list
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(c) Copyright 1998-2007. This web site
represents the original modelling design work of EDFmodel.com. All rights
reserved. No portion of this publication maybe reproduced without the
express permission of EDFmodel.com. By submitting any model order form to
us you are accepting EDFmodel.coms terms & conditions of sale. Please
read our full Terms &
Conditions . EDFmodel.com reserves the
right to alter model specifications & pricing without notice. EDFmodel
will not accept any responsibility for the use of any web links on this
website
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