  
An all Electric Jet Completely and Professionally Painted
The Convenience
The Benefits
Click To Enlarge
Electra ARF Servo List - click here to download the pdf file To order JR Radio Performance Packs click here
For Pricing 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.
Receiver Batteries
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 Electra. 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. Electra Jet
ARF
|
||||||||||||||||||||||||||||||||||||||
Rudder Servo Mount Addendum(09/04/2009)This simple machine made maple block assembly makes the rudder servo installation much easier. It is available at no charge to Electra (Kit or ARF) and Sabre (AFS or ARF) owners with your next purchase from BVM. Kits shipped after September 2009 have these parts and instruction updates included. |
(06/12/2009)
Note: All E Jets are built light weight. Give due consideration when handling each F/G component.
Canopy and Engine Hatches Lapping Addendum
(06/10/2009)
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
(06/08/2009)
From: Bob Belluomini
To: Bob
Sent: Tuesday, June 02, 2009 12:48 PM
Subject: Electra Retract Pushrod Mod
Hi Bob,
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 stroke correctly.
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.
Thanks,
Bob Belluomini
F8 Installation Addendum
(06/08/2009)
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.
EVF Tailpipe
(12/09/2008)
The original BVM Electra jets have hundreds of flights on the original tailpipes taped together per the instructions. We have heard of a few in-the field that have had the taped seams open up. This will cause a very noticeable loss of thrust. If you experience noticeable loss of thrust, land as soon as practical. Check the tailpipe seam and batteries of course.
To repair the tailpipe, remove it, strip away the tape and clean the tape residue off with 3M Adhesive Cleaner #08984 (available at auto paint supply stores). Then rebuild the tailpipe as per the instructions.
EVF Batteries
(12/09/2008)
’09 EVO-6500 12S
In Electra Jets
In September ’08 there was a change in the EVO 30c 6400 saddle cells. Besides a formulation change, the physical size of the cells was changed. This required a different configuration in how the packs were assembled to fit into BVM jets.
2008
configuration 
2009 configuration
The pack on the left represents the ’08 configuration i.e. 2-cells on top of and centered on the 4s2p cells below. The pack on the right is the ’09 version, i.e. 5-cell set adjacent to another 5-cells that results in a slightly thicker package.
The dimension change for the 2s2p booster packs that are part of the 12s system is insignificant.
2 Options to install the booster pack
Option 1
The 2s2p pack will fit under the fan mount and along side the fan shroud. Use a ball end Perma-Grit rotary cutter #RF8C to bevel the aft edge of the fan mounting rail and the top forward edge of the saddle cell platform.
Protect the exposed edges of the pack by applying adhesive backed fuzzy Velcro to both surfaces, and then insert the booster pack under the fan mount rail.
Option 2
Prepare the top of the fuse as shown, make a balsa block to fit on the front side of the EVF ply ring mount, Zap finish it and apply strips of adhesive Velcro as shown. Make slots in the F/G skin deck and install a loop of ˝” wide Velcro. Put matching bits of Velcro on the bottom side of the 2s2p battery.
The 2 ply cross braces shown in the unaltered top hatch must be removed for option #2. Remove just the aft brace for option #1. The aft tongue and canopy hooks are sufficient to hold the canopy hatch in place.
Saddle Cell Installation
(2) EVO 5s2p 6500 packs
One of the saddle cells may need to have the wrapping trimmed on the end to allow the power wire to exit the pack tangent to the bottom edge of the pack. Apply fuzzy adhesive Velcro to the bottom edge of the left and right packs. The saddle cells are retained by this Velcro gripping the Velcro on the 1/16” plywood battery shelves. Be sure that these ply parts are securely glued to the framework below.
The Mylar tailpipe will flex as necessary to insert the saddle cells. Since the saddle cells can be placed a bit fore or aft, the center of gravity can be adjusted with their placement. When the best C.G. is attained (after test flights) we put ink marks on the fuse flanges to be certain the packs are located accurately for subsequent flights.
Shown here is option #1 connected with a Power Plug 3, hatch off and hatch on.
If you are going to execute extreme negative “G” maneuvers, add a 2” long strip of plastic tape to hold the engine access hatch securely to the fuse. Locate the tape adjacent to the saddle cells.
Always check each pack for correctly charged voltage just prior to flight regardless of when they came off charge. Always use extreme care when connecting these very powerful batteries in series and to the EVF unit. Avoid wearing a metal ring on your fingers during the connecting process.
Note: The EON 33 6500 m.a.h. batteries are retained solely by the Velcro on the bottom edges and they are captured by the fuselage flange and engine hatch. If high negative "G's" are to be induced, add bits of clear plastic tape to further secure the hatch to the fuse at midspan.
Flap Setting Addendum
(10/02/2008)
The landing flap position that we recommend in the manual may be a bit too 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 about 10° less will afford smoother landings. Try it and let us know what you think.
Main Gear
Flex Mount Stiffener Addendum
(09/30/2008)
Main Gear
Retract Servo Installation Addendum
(09/11/2008)
| 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. |
Inlet Duct
Installation Addendum
(09/11/2008)
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.
Addendum
(11/29/07)
Contact Us
All graphics, photos, and text
Copyright 2010 BVM, Inc.
Use of graphics or photos without written permission from
BVM is
strictly prohibited.