Electra Instruction Manual
| Electra Paint Masks |
Adapting a Jetcase to an Electra
JR Radio Performance
Electra on 10s power |
An all electric jet
done the BVM way.
Perfect for the modeling craftsman.
With interest in electric airplanes sizzling, it
was only natural for the BVM team to set their sights on a jet model
with all the performance, quality, reliability and thorough
engineering that BVM products are so well known for the world over.
The new Electra Jet is designed as a quick build kit with wood wings
and stabs so precisely engineered that the building process is sure
to be a delight. The lightweight, super strong structure assures
superior performance and ultra slow landings.
BVM’s engineering team developed integrated power systems that’ll
provide 13-15 pounds if installed static thrust (see EVF brochure)
for thrilling take-off, climb and high speed performance. Cool and
reliable operation is the result of our engineering excellence.
Of course, your Electra will be exceptionally complete for
hassle-free swift assembly. And should you get in a bind, BVM
support is just a call away.
Let’s take a closer look at what makes the Electra JetTM
components are all made in the USA at our Florida facility. The
fiberglass fuselage and molded fin have strategically placed Carbon
Fiber and Kevlar reinforcements. A crystal clear canopy and molded
cockpit deck with instrument panel are standard. All formers are
laser cut for accuracy and a complete color photo enhanced
instruction manual and C.A.D. plans are included.
Wing & Stab Details
Every rib, spar, brace and wing skin
(1 piece) is laser cut to perfection. Shaping of the L.E. & tips is
aided by laser cut templates.
Flaps and ailerons are
easily assembled using laser cut 1/32" ply skins and balsa ribs
providing thin, straight and dent resistant trailing edges. The very
generous size flaps provide short grass field take-offs and super
slow stable landings.
Servo and landing gear cover plates are a unique
combination of thin poly-ply and balsa.
The low landing speed and zero residual thrust of
the EVF (throttle trim down) negate the need for wheel brakes. This
saves weight and money.
Access is Important
Even though the power and guidance components are
minimum in this "all electric" jet, easy access to them is a
convenient feature of your Electra.
Canopy hatch pulls forward and off exposing the
Power hatch allows quick removal of BVM Saddle
Cells™ and access to the EVF.
Nose gear door opening provides retract and Flex
Bottom hatch exposes wing mounts, main gear
retract servo linkage and elevator servos.
Strong & Light Undercarriage Hundreds of landings without a glitch
The mechanical retract
operation is smooth and reliable using 2 JR 791 retract servos.
The injection molded Carbon Fiber retract frames and
all aluminum machined internal parts provide superior strength.
BVM’s heavy duty 3/16" main wire struts with precision axles and
Du-Bro wheels complete the landing gear package.
Benefits of flying an Electra
No turbine waiver needed.
· Minimum support equipment necessary -
bring spare batteries and a charger for more flights.
· No vibration to wear out
· No liquid fuel to saturate the inside
of your model.
· Low heat environment.
· Electric Reliability
· 150+mph performance.
· SUV transport in one piece, wings
remove easily for more compact transit and storage.
Your Electra, your favorite tool kit,
transmitter, spare batteries and a charger and you are set for a day
of jet flying. Vehicle is a Suburban or similar.
Electra Servo List -
here to download the pdf file
To order JR Radio
Products click here
The Electra Jet is big (60" wingspan) for an
electric powered sport jet, but still compact enough to fit into many
midsize SUV's like Bob Fiorenzi's Mazda Tribute. Shown here
with the wing and tail covers removed, it rests on a foam padded box
and there is still space available for spare batteries, chargers,
and a cooler.
Click here to view the Electra Jet video
(22mb .wmv file)
The Electra Jet with EVF propulsion was impressive at FL Jets '07 that many of our dyed-in-the-wool turbine customers want to add one to their arsenal of sport jets.
The utter simplicity, quiet operation, model field acceptability, easy transport, and the fact that it flies like its big brother "Bandit" are convincing qualities.
It's not a Viper or a Bandit but just the right in between size to absorb the 5+ H.P. we now have available for the EVF. We have learned a few things over the years and the inlet design reflects our experience in that area. The fan, inlet and tailpipe designs must have a determined performance point prior to executing the tooling. We believe that the design point we chose provides an excellent balance between take-off thrust and thrust available at 150mph. Enthusiasts at Florida Jets '07 or other recent flight demo's can attest to the wide envelope of performance of the Electra / EVF combination.
One really has to see it to fully appreciate it, but this video should help.
For BVM Electric Jets
BVM uses and stocks 2 cell 7.4 volt
LiPo batteries in 1800 mAh and 2600 mAh capacities. We
find the 1800 mAh quite sufficient for 4 flights or so on the
Here the battery is taped to a 1/8"
ply tongue that in turn is screwed to the forward servo mount.
Combine these 7.4 volt batteries with a Duralite 5.1 volt regulator for very
reliable and weight efficient flying.
Your EVF power battery charger will
charge it in a jiffy at 1C.
Here To Order
Airframe Directive (A.D.)
And other helpful notes
(3) 4s Battery Install Addendum
Click here for instructions
Servo-Operated Nose Gear
Click here for instructions
Canopy and Engine Hatches Lapping Addendum
As a final procedure for fitting the canopy and engine hatches,
use a piece of #220 grit sandpaper (grit up) slid between the fuse
flange and hatch and "lap-in" any tight spots for a relaxed fit of
the hatch to the fuse.
Retract Pushrod Addendum
From: Bob Belluomini
Sent: Tuesday, June 02, 2009 12:48 PM
Subject: Electra Retract Pushrod Mod
I incorporated a small mod that limits how far
the retract pushrod bends. I reduced the overall throw at the servo
so as to reduce the twisting action that occurs at the servo mount
and former. With the gear in the down position I cut a j shaped
notch in two of the blocks that are used to mount the servos, one
for each side. The notch is cut just deep enough so the pushrod
rests against it with the block mounted on the back of the front
blade spar about 3/16" out from root of the wing. The blocks are
mounted at 180 to each other to allow the pushrod to go through it
If you depress the over center link on the
retract by hand you will see the motion is transferred to the other
retract unit making it impossible for either retract to unlock.
F8 Installation Addendum
The canopy frame is of very lightweight
fiberglass structure, support the model on soft foam rubber for the installation
of F8 on page 71 of the manual.
Flap Setting Addendum
The landing flap position that
we recommend in the manual may be a bit to much for some landing
techniques, It works if you add a bit of power just prior to
touch down. For a total power-off flare out, a setting of
less will afford smoother landings. Try it and let us know
what you think.
Flex Mount Stiffener Addendum
Gear Retract Servo Installation Addendum
The following instructions and photos clarify
what has been published in the assembly manual and plans. The
location of the main gear servo mounting is important for the proper
function of the retracting mechanism.
It is important that the aft
end of the inlet ducts is centered in the fuselage. The Saddle
CellsTM require equal space on each side of the thrust tube.
Securing The Wings
Elevator Servo Mounting
| To clarify the correct orientation of the wing cradles (used to hold the wing to apply bottom skins), all 3 cradles are taller on the front end than the rear.
Use an accurate measuring device to properly determine this. Later kits have a "tick" laser cut into the front edge of each cradle. Proper orientation of these cradles is necessary to achieve the wing "wash-out".
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