Bow Thruster 33mm v2 for Bernhard Gruben DGzRS or SAR boat 3D print model

rev. 200214 (14-02-2020)
- improved PDF instructions, added more details into steps
- minor or cosmetic improvements to printed parts (some has more added roud pads for better adhesion during print, or adjusted dimensions for better fit)

Printable bow thruster for DGzRS rescue model boat Bernhard Gruben of german SAR.

For 3D print.

Parts for 2 versions to build:

• a) working propeller with bevel gears
• b) side blade prop

Dimensions: inner diameter 33 mm
width max. 100 mm
width min. 62 mm
propeller 4 blades
scale 1:20
for DGzRS 23.1m klasse :
Bernhard Gruben [1997 MMSI 211235240]
Hans Hackmack [1996 MMSI 211235200]
Hermann Rudolf Meyer [1996 MMSI 211235180]
Theo Fischer [1997 MMSI 211235220]

Printing: material ABS, layer 0.1mm, no support , no brim, 20% cooling from layer 4 upwards is recommended (or better required)
For assembly a glues for plastic and metal are needed (for eg. Revell Contacta for ABS-ABS and UHU Plus for metal-ABS).

Designed specifically for Bernhard Gruben DGzRS rescue boat, it will fit also to a kit manufactured by Graupner (cat. nr.
2027.V1 & 2027.V2). Used actual photos of Bernhard Gruben ship to model the bow thruster as accurately as possible.

PDF instructions included.

Additional required parts:
Part Nr. Nbr. Name material dimensions
S1 1 stainless steel rod for propeller, steel, 2 x 40mm
S2 1 stainless steel rod for motor, steel, 3 x 55mm
B1 1 brass tube, brass, 2/3 x 7mm
B2 1 brass tube, brass, 2/3 x 12mm
B3 1 brass tube, brass, 3/4 x 19.5mm
B4 1 brass tube, brass, 3/4 x 7mm
Motor with diameter 27.5 mm
elastic hose (5mm inner diameter for printed 5.4mm parts) or other coupling between motor (2.3mm) and steel rod (3mm)

A full kit is also available if requested (all parts printed + all additional required parts, without motor). Please write me a message.

More details, photos and info: https://www.zonerama.com/jsyrovat/Album/3969155
Video: https://www.youtube.com/watch?v=T0abraAq6tE (bow thruster test in hull)
https://www.youtube.com/watch?v=DZ4BA1KGY28 (bow thruster test)