The month of May features Rolf’s fabulous build Jet Arrows Mirage 2000. The picture was taken in Germany during one of the Mirage sorties.
This EDF jet is powered by a 9mm Fan and 6-8S LiPo packs. The Mirage 2000 is unique as it is manufactured by JetArrows in one piece (fuselage and wing are one unit). Hence only the rudder needs to be glued on to complete the model.
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Done !! (well except for the pipe which has not arrived yet).
Once the jet pipe has arrived from Gumania the engine can be started and the plane will be ready for maiden.
In summary: a very nice plane to build – quick and easy. (a pre-installed rudder -which was also available from Tamjets- will make the installation even quicker).
To mount the Dubro 600ml (20oz) tank as close to the CG as possible, I have installed a wooden frame over the retract bay. The top surface of the wood is coated with a thin layer of silicone. Once dry the “anti slip” effect of the silicone allows me to install the tank with 2 velco straps. This makes removal easy.
The turbine bay and servos are protected by a layer of TamJets Heat Shield Blanket and fire retardant foam tape. The TamJets Hopper Tank is installed beside the main fuel tank near the steering servo.
The retracts are operated by one of our AirPower EV-2 electronic retract valves. The brakes are driven by a AirPower EV-1 brake valve. As the gear doors stay open once the gear is out, I decided to use a single action EV-1 valve for the doors as well. The door open airline is connected to the retract down airline. This will open the doors as the same time the gear is deployed. The door close airline is then connected to the EV-1 valve which is driven by a separate delay mixed channel on my JR Transmitter. Once the gear is retracted, the door close valve is activated automatically after a 2 second delay (servo speed setting) and closes the doors.
The Turbine pump and ECU, fuel valve and kero start valve are all located in front of the cockpit area to make it easier to set the correct CG later (I calculated with a pipe weight of 80grams).
The last item still missing (it slowly travels to Singapore by German Post) is the Grumania P-20 Pipe for the F-16. Double wall, titanium pipe with only 76grams.. very sexy..
The pipes are custom made and available from Grumania and of course via our webshop
I finished the installation of the retracts and routed the airlines. The intake duct is installed – I will have to cut it down later to install the fuel tank.
The EDF Version I’m converting does not have a rudder, so I decided to modify the plane and cut/install a working rudder for those cross wind moments.
The pictures below show how I cut out the rudder, added balsa to close the rudder and fin.
At the end I added a layer of light glass to the rounded edge so it an be painted. Looks quite good after the paint job.
The Rudder Servo is a Hitec HS-85MG which is installed in the small box below the rudder. A pin from the rudder will go into the small groove in the servo arm to drive the rudder.
Although we could not join the guys in Germany in person at the 4th Electric Jet Meet in Effeln last weekend, we can, thanks to the guys from RC-Network in Germany, bring you some great impressions of the meeting.
From small to large (and super large), all kinds of EDF Jet’s made it to this years Electric Jet meet.
Enjoy the Pictures and Videos. For more pictures please visit RC-Network or the picture page of Florian.
We build this CARF Spark in Green/Blue Contender scheme for one of our customers. The model is extremely well designed by CARF including a removable battery tray and receiver plate.
This Spark is equipped with the following components: - TamJets TJ100 EDF unit - Neumotors 1515/3D Brushless Motor - TamJets retracts (designed for the Spark) - TamJets Spark Trailing Oleo Struts - MPI wheels - TamJets Brakes
Servos used are various Hitec Digital and Analogue servos.
The model will be flown later with 5000mAh 12S Hyperion G3 Lipo Packs. Due to the light weight of the plane performance will be fantastic.
To get an idea of the performance have a look at the below video of a similar equipped Spark:
Building the Hawk was a joy. All components have a superb fit and the high prefabrication of this model basically means you only need to fix your servos, fan and radio and you are ready to go.
The total weight ready to fly is 3.8kg. With the power supplied of by the DS-51/Lehner combination the plane performs beautifully in the air.
This is a picture of the retract position of our model. As the CG is at 115mm from the forward wing mount, the retracts could be installed a little bit further forward, making it easier to hide them fully in the wing.
Some info on the design of the full size plane: The Hawk is a tandem two-seat aircraft and has a low-mounted cantilever monoplane wing and is powered by a non-augmented turbofan engine. The low-positioned one-piece wing was designed to allow a wide landing gear track and to enable easier maintenance access. The wing is fitted with wide-span, double-slotted, trailing-edge flaps for low-speed performance. Integral to the wing is 836 litre (184 imp gal) fuel tank and room for the retractable main landing gear legs. Designed to take a +8/-4 g load, the original requirement was for two stores hardpoints but it was designed to fit four hardpoints by Hawker Siddeley.
The fuselage design was led by the need to get a height differential between the two tandem cockpits, this enabled increased visibility for the instructor in the rear seat. Each cockpit is fitted with a Martin-Baker Mk 10B zero-zero rocket assisted ejection seat. The centre fuselage has an 823 litre (181 Imp Gal) flexible fuel tank. The two-shaft turbofan Rolls-Royce Turbomeca Adour engine is fitted in the rear-fuselage with inlets on each side above the forward wing roots. A ram air turbine is fitted just in front of the single fin as well as a gas turbine auxiliary power unit above the engine. The forward retracting nose landing gear leg is fitted in the nose.
The air brake, located under the rear fuselage.
Performance
The Hawk was designed to be maneuverable and can reach Mach 0.88 in level flight, and Mach 1.15 in a dive, thus allowing trainees to experience transonic flight before advancing to a supersonic trainer.sIts airframe is very durable and strong, stressed for +9 g, but the normal service limit in RAF service is +7.5/-4 g.
Watch the video of our maiden flight…….
Disclaimer: The aileron throws we used where much to much……hence the high roll rate and overcompensation during take off.
This is our HET-RC F-86 Sabre. The model is one of HET-RC first epoxy fiberglass models and comes fully pre-painted.
Our F-86 is equipped with the following components: - WeMoTec Mini Fan 480 - HET-RC Typhoon 2W-18 Motor - HET 75A ESC - 3700mAh 4S Lipo - HET-RC Mini Air Retracts
I decided to install the nose gear steering slightly different then shown in the manual. I opted for a completely concealed installation of the steering servo. The servo is now located inside the fan compartment and is glued directly beside the fan against the fuselage of the model. A balsa block between servo and fuselage wall creates enough space for the servo to move freely.
2 pushrod channels are routed from the fan compartment into the nose and guide the 2 steering wires so that they exit directly behind the retract unit.
Some info on the real plane: The North American Aviation F-86 Sabre (sometimes called the Sabrejet) was a transonic jet fighter aircraft. The Sabre is best known for its Korean War role where it was pitted against the Soviet MiG-15 and obtained UN air superiority. Although developed in the late 1940s and outdated by the end of the 1950s, the Sabre proved adaptable and continued as a front line fighter in air forces until the last active front line examples were retired by the Bolivian Air Force in 1994.
Its success led to an extended production run of more than 7,800 aircraft between 1949 and 1956, in the United States, Japan and Italy. It was by far the most-produced Western jet fighter, with total production of all variants at 9,860 units.
Variants were built in Canada and Australia. The Canadair Sabre added another 1,815 airframes, and the significantly redesigned CAC Sabre (sometimes known as the Avon Sabre or CAC CA-27), had a production run of 112.
