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The contest model Evolution is made for the F3B model category.
The design by Günther AichHolzer follows the current trend in the development of models for this category. This means a small fuselage diameter, a thinner wing and smaller wing area in comparison to the model Eagle.

 
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Evolution...

Basic properties

Category: F3B
Wing span: 3130 mm
Weight: from 2150g
Wing area: 59,58 dm2
Tailplane area: 5,02 dm2

The airfoil is from Max Steidle (Wing: M 1580 and M1585, other: M08), who also made airfoils for models such as the Crossfire or Tool. He deserves acknowledgments.
The Evolution is the first serial produced model with no control horns on the outside
To reach the maximal precision in the prototype production, a 3D mill cutter was used. The programs were made with the help of our webmaster, Michal Michna.

The wing of the model has a slight V form. The surfaces are moved using a torsion control.
Ballast is placed in the wings. The standard version is a wing sandwich made of carbon fibre, Rohacel and glass fibre. The spar of the wing is made of UMS carbon.
The fuselage, mostly of carbon has an improved system of elevator control and a reinforced rudder construction. The diameter is kept to a minimum.


Drawing...

Detailed Parameters...

Settings for EVOLUTION

Review in Aufwind 6/2007

Torsion servo drive...

Color schemes...

Pictures model...


Drawing:

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Detailed Parameters:

Category: F3B
Conception: Two part wing, two part elevator, x-tail

Wing span:

3130 mm

Length:

1490 mm

Wing area:

59,58 dm2

Elevator area:

5,02 dm2 

Wing airfoil:

M 1580 and M1585, M08

Elevator airfoil:

SD 8025

Weight:

from 2150g

Ballast:

900g

Maximum servo width:

wing center: 12 mm, wing tip: 12 mm , fuselage: 12 mm
Construction:  

Wing

carbon-rohacel-glass or carbon-rohacel-carbon

Spar

UMS Carbon

Tailplane

glass-balsa-glass

Fuselage

carbon-glass

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Settings for EVOLUTION:

Task

Ailreon

Flap

Elevator

Neutral shift

Snap-flap


Distance

negat. 22 7 10 neutral 0
pos. 12 5 9 2

Speed

negat. 22 7 11 neutral 0
pos. 15 6 10 2

Thermik

negat. 25 0 11 from 2 to 4 0
pos. 0 0 10 2

Start

negat. 25 0 8 from 12 to 14 0
pos. 0 0 7 0

Towhook: 121 mm from end of cabin

Center of gravity: from the leading edge 96-98 mm


Elevator neutral


negat.: control surface to up
positiv: control surface to down


Torsion "RDS" servo drive...

Thin and precision servo driving surfaces. Instalation instruction...

  1. To form the cogwheel of the servo into the aluminium use a good liquid
    mould-release. You can use slightly thickened Epoxy for this.

     

  2. You have two different bended steel. The more bended (55 deg.) is for flap and the other one (40 deg) for aileron.

  3. First you have to fix the servo-mount in the wing. Make a drawing on the
    wing like shown on the picture and glue the servo mount in the right
    position.

  4. Next step is to glue the brass-tube into the bar.

  5. Last step is to glue the bended steel into the aluminium. To gauge it on
    the right place you take a long time-epoxy and mount it in the wing. Then
    you must move the flap up and down two or three times and the steel will
    gauge automaticly. Fix the flap in a neutral position and wait 12 hours.
    Make sure that the little screw on the aluminium is on the upper side !!!!

  6. After all use a teflon-grease on the steel and the slot. This helps to
    minimize abrasion and radial clearance in the future.

    For the installation of Futaba servos S3150/S3155 for the RDS linkage we recommend these servo frames: http://www.rcsolutions.ch/index.php?show=64 

     


Color schemes:

Click here for more info

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Pictures model:

All pictures can be enlarged by clicking on them.

CAD - CAM pre-production form

Virtual testing servos in fuse

Pre-production color scheme

Production first prototype models

Final

News:


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