Submarine Dolphin 2

Delphin Type II

The Delphin II project is the result of the Delphin experimental submarine.
The Delphin program was the first program ever to damage a submarine with hydrodynamics
in 1944. This was triggered by the small submarines
Seehund, which were clearly too slow. Due to the low speed, the radius of action was very small and
the Seehund actually had to be in the right place at the right time to be able to bring its torpedo to the
target.
All these disadvantages were to be a thing of the past with the new streamlined hull shape
. The Delphin 2 was motorized just like a seal. However, it also had
oxygen for the diesel engine on board so that it could be driven
without a snorkel when submerged.

The 1:12 scale model is assembled from five hull parts.
The bow nose, torpedo arms and the central spacers are each fixed with 4mm PVC
rods and glue. The tail cone is screwed to the engine mount using four M2x 25mm screws. The technical frame is screwed to the motor frame with four M3 pan-head screws.
A Robbe roxxy C28-27-34 with 760KV is sufficient as a motor. Intended battery: 3S Li Ion.
The model can be equipped with three servos. Rudder and separately
controlled elevator would be possible. So you can mix depth and aileron
on the depth rudders.
If you do not want this, the model can also be driven with two servos without any problems.
A 75mm Marley PVC rain inner downpipe is used as the pressure hull.

Delphin Type II

The Delphin II project is the result of the experimental submarine Delphin.
The Delphin program was the first ever, in 1944, to deal with hydrodynamics on a damaged submarine. The trigger for this was the significantly too slow midget submarines of the Seehund class. Due to their low speed, their operational range was very limited, and the Seehund essentially had to be in exactly the right place at exactly the right time in order to deliver its torpedo to the target.
All these disadvantages were meant to become a thing of the past with the new, streamlined hull design. The Dolphin II was powered in the same way as a Seehund. However, it also carried additional oxygen for the diesel engine, allowing it to run the diesel while submerged without a snorkel.
The 1:12 scale model is assembled from five hull sections.
The bow tip, torpedo arms, and the central spacers are each fixed in place using 4 mm PVC rods and adhesive. The tail cone is bolted to the motor bulkhead using four M2 × 25 mm screws. The technical frame is attached to the motor bulkhead with four M3 pan-head screws.
A Robbe Roxxy C28-27-34 motor with 760 KV is sufficient. The intended battery is a 3S Li-ion pack.
The model can be equipped with three servos. A rudder and separately controlled dive planes would then be possible. This allows depth and aileron functions to be mixed onto the dive planes.
If this is not desired, the model can also be operated perfectly well with just two servos.
A 75 mm Marley PVC internal rainwater pipe is used as the pressure hull.

Material: ASA
Bow and both stern cones:
4 wall layers and 7% Gyrolid filling
These parts are drilled with 4mm holes at the top and bottom. The components should be able to fill and drain with water.

All other parts:
4 wall layers and 100% filling