Stubenfliege - Product facts


 

 

RC-Slow-Fly - What is behind all this?

It is a new dimension of radio-controlled model flight: Tight flying under narrow spatial conditions, not only outside, now even indoors. No matter whether you are in a gym, in your own garden, on a small forest glade or even inside swimming baths - the Stubenfliege needs only a small area for flying. Due to the low wing load the minimum air speed of the Stubenfliege is only 1,5 m/s - so you just can walk behind the model. By the way: It is capable of doing aerobatics as well - try loops and turns inside a small hall, which is pure fun! 

 

A well-thought design including every detail

The Stubenfliege was developed by Stefan Dolch and turned out to be a really outstanding model. No part of the Stubenfliege is accidental - every detail was designed thoroughly. Hundreds of test flights lead to the high practical quality of this model. The special attraction of the Stubenfliege results from its unique design in combination with its surprising functionality.

  

Carbon-fibre - A wonderful material

This has not been achieved so far: The whole structure, i. e. wing, V-tail wing, fuselage and landing gear are made of carbon-fibre reinforced resin. This high-tech material originating from aeroplane and spaceship industry is as strong as steel but weighs 4 times less. The whole structure adds up to just 31 g, yet it is rigid enough to even perform aerobatics.

 

Ultralight carbon-fibre tubes for fuselage and wing

In his book "Wings made from fibre composite materials - Theory and practice of building by means of tube spars" Stefan Dolch described how to produce carbon-fibre tubes. Meanwhile he has optimised the process and developed ways to manufacture under serial production conditions. The Stubenfliege is the first serial product that is built up with such a kind of carbon-fibre tubes. The low weight of these components is really fascinating. Let us for instance have a close look at the main tube employed for the fuselage: It weighs just 7 g per meter, does only have a wall thickness of 0,15 mm and a diameter of 8 mm. Still its strength is that high, that so far during all the intense practical testing no damage occurred.

 

Another innovation: A lightweight wing without rips!

The lightweight wing without ribs surely belongs to the top inventions of the past years in the field of modelling. A 3D-formed carbon-fibre frame stretches the covering - weighing only 2 g. The wing tips have a little polyhedral, which helps to produce an airfoil, that is ideal for flying at slow speeds. This airfoil is formed without any ribs, which helps to save weight and reduces drag. Due to the washout, the Stubenfliege is absolutely stall-safe. There is no risk of the wing tilting over at slow speeds - as known from other models. Patents protect the design of this wing.

 

Can be disassembled completely - Build-up just takes seconds - No tools required

The whole model is ready to take off in no time: Wing, V-tail wing, fuselage, landing gear and the battery pack are just snapped together - no tools are needed! Ultralight carbon-fibre clips that were especially developed for this model and snap on at pre-defined positions achieve this.

 

Quick as lightning: The changing of the battery pack.

With a simple "click" the landing gear is mounted and locked.

 

The radio gear is another smart solution: When taking the V-tail halves off the model, the carbon-fibre rods used for rudder/elevator control remain automatically with the fuselage. There is no need to engage or disengage the rods when assembling or disassembling the model. It is so easy to do and quite a user-friendly solution, too.

 

To mount the V-tail wing halves and get them ready for operation - just snap them onto the hinges at the fuselage.

 

Wooden case for safe transports

A special wooden case - neat and sturdy - is included with the kit. There are special fixtures inside, where all the single components of the model are snapped in. The wing is positioned loosely without a fixture, when the lid of the case is closed, all parts are locked firmly. The case itself is another proof of high craftsmanship and is made of the best materials: beech wood protected by a varnish layer with chrome-plated brass hinges and locks. It is just perfect for storage and transport of the Stubenfliege.

 

 

Electric drive set with maximum efficiency for vertical climbs

As accessory parts and for tuning purposes we do offer the following components for the Stubenfliege and other RC-Slow-Fly-models:

All these components are designed in the best way for the Stubenfliege - as far as electric, aerodynamic and - most of all - mechanical requirements are concerned. The Stubenfliege's motor bulkhead matches with the geared motor, the propeller's diameter matches with the height of the landing gear and the two fixtures on the bottom side of the fuselage safely hold the battery pack. And without any additional ballast the centre of gravity is just where it has to be!

With the components listed above and an 8-cell battery pack (8 x 50 mAh) on board, the Stubenfliege is more than well motorised, there is plenty of thrust for powerful aerobatics. You can vary the number of cells of the battery pack from 6 to 10 cells in order to adjust the vivacity of the Stubenfliege to your individual needs. Starting with 6 cells the Stubenfliege is a good-natured Slow-Flyer, able to take off from ground. A tasty titbit for professional pilots is to use a 10-cell battery pack with 50 mAh: There is enough power to climb vertically right out off your hand - the maximum thrust exceeds the model's weight.

This table shows how to use the high power potential of this drive set:

number of cells of battery pack

current [amps]

thrust [g]

vivacity

time limit for maximum power [s]

6

0,6

60

normal

no limit

8

1,1

100

hot

200

10

1,5

130

very hot

5

 

The Stubenfliege's maximum flight time is approximately 5 minutes (battery pack with 50 mAh). That is exactly the time to recharge the battery pack (charge current 0,5 amps). So with two battery packs you can almost fly without any breaks. Just empty one battery pack in flight and recharge the other one in the meantime.

 

Who should pilot the Stubenfliege?

The Stubenfliege is a very stable RC-Slow-Fly-model, however due to its crisp and direct reactions on every transmitter command you should already have some experience with radio-controlled models. Of course, advanced pilots as well as professionals will have pure fun with this model right from the very first start.

 

What else do you need to take off?

Please take our advice and order the Stubenfliege completely equipped with an electric drive set (order #īs 202, 300, 401, 500, 510, 2 x 600). In addition you need:

The weights given above are just recommendations and should be not understood as limits. However, please keep in mind: The less weight, the better this model will fly!

 

What is your opinion on the Housefly?

If you are fed up with warped wings, poor wood quality, weak electric drives that heat up fast and more problems like this - or if you are interested to buy quality "Made in Germany" - give this model a try and compare it to the rest. You will soon find out yourself, that the Stubenfliege beats them all - its quality and its flight characteristics are more than convincing.

 

Last update: 12/01. Errors and changes reserved.


Andrea Braun Modelltechnik - Lagerhausstrasse 105 - D-67061 Ludwigshafen - Phone and Fax 00 49 621 56 71 52

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