aero-naut Jonny, User Manual

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Harbour tug Jonny
Jonny is a fully operational model which will give great pleasure to any model builder. The basic design is that of a modern harbour tug. One
outstanding feature of the kit is the very high quality of the materials supplied, and the reward is a superb model. The capacious hull is moulded
in GRP, and all locations for openings are moulded-in. The model is supplied complete with two shaft drive systems and twin rudders, but a Kort
nozzle system can also be installed at any time. Alternatively the vessel can be fitted with a Schottel drive system, and the building instructions
include a section describing this option.
The kit includes all the parts required for a stern roller, which means that the vessel can be built in an offshore tug version. The working deck is
clad with laser-cut wood panels. The wheelhouse furniture and fittings are included, allowing any level of detail to be incorporated. Additional
features are the two working fire monitors, which also rotate.
The kit contains many operational working parts such as towing winch, tugger winches, fire monitors, searchlight and more.
Please follow the individual steps in these instructions when building the model, and read through the descriptions and notes carefully before
you reach for the glue bottle. The last few pages of these instructions contain a Parts List to which you should refer constantly during
construction. The numbered parts mentioned in the instructions are described accurately in the Parts List, informing you of their form, material
and dimensions.
Certain parts have to be cut to the correct length by the builder; the correct dimensions are also stated in the Parts List.
Suggested power systems:
Shaft drive system
Motor
2 x Race 720 navy Order No. 7000/49
Speed controller 1 - 2 x Multi 25 Order No. 7019/71
Lead-acid battery 12 V / 7.2 Ah Order No. 7449/06
1 x Propeller, 60 mm, R.H. Order No. 7174/14
1 x Propeller, 60 mm, L.H. Order No. 7174/15
2 x Flexible shaft coupling Order No. 7035/60
2 x Flexible shaft coupling Order No. 7035/66
2 x Flexible shaft coupling Order No. 7035/67
Optional Schottel drive system
Schottel drive system, brass
Order No. 7020/84
Optional equipment
Bow thruster Order No. 7020/28 or 7020/93
MicroLight (lighting / switch module) Order No. 7019/01
EasyLight (lighting / switch module)
Order No. 7019/03
Geared pump Order No. 7140/50
Silicone tube Order No. 7274/57
Winch drive unit Gear power 15/6V micro geared motor
Recommended adhesives
Material Adhesive Order No.
GRP / ABS, GRP / PVC UHU Acrylit 7633/09
GRP / wood, GRP / metal UHU plus endfest 7633/02
Wood / wood Ponal Express 7638/10
UHU hart 7631/02
Wood / metal, metal / metal UHU plus endfest 7633/02
UHU plus schnellfest 7633/04
ABS / metal, ABS / wood Stabilit Express 7646/01
Recommended primer
Material Primer Order No.
Plywood Sanding sealer 7666/02
The laser-cut parts are retained in the wooden
sheets by small lugs. Release the parts by
cutting through the lugs with a sharp knife.
Don't break the parts out, as they could be
damaged.
We recommend using our balsa knife
Order No. 8185/00
Use polycarbonate paints to finish
the GRP and ABS components.
The wooden parts should be
primed using sanding sealer and
rubbed down before painting.
Tips & notes
Assemble parts 1 - 4 to make the boatstand.
Hull
Use a pencil to pick out the marked position of the bow thruster
(BSR); this will help when cutting the openings.
Mark the openings for the bow thruster to suit the unit you intend to
install, and cut them out.
We recommend using a Dremel or similar electric tool with a Form
Flame diamond cutter to cut the openings; this bit can be used both
to drill and shape the opening.
Adjust the holes to suit the bow thruster you wish to fit. Assemble
the bow thruster using UHU Plast Spezial or Ruderer adhesive.
Position the bow thruster in the hull. The BSR should be angled back at about 50°, so that the screws can be reached at any time (in case of repair);
tack it to the hull using cyano-acrylate ('cyano'). Seal any gaps on the outside of the hull using adhesive tape (masking tape; not standard clear
tape, as Stabilit / Acrylit sticks to this). Glue the BSR to the inside of the hull using Stabilit / Acrylit. Allow the glue to cure fully, then remove the tape
and apply more glue round the tubes on the outside. Cut off the excess tube length and carefully sand back flush with the hull.
27
21
19
20
23
18
24
25
8
9
10
11
18
12
13
14
22
15
16
17
26
Cautiously place the framework in the hull, but don't glue it at this stage!
The rear face of frame 13 (shown red) must lie flush with the rear scupper and the step in the rubbing strake. Now glue the deck stringers 19
to the frames, ensuring that they fit fully into the slots; they must not make contact with the hull.
Glue frame 16 to the stringers 18, and the foredeck girders 23 to frames 13 - 16.
At a later stage the two stringers 18 can be used as a support for the receiver, speed controllers and other electronic units.
13
1
2
3
4
5
Remove the frames and stringers from the laser-cut sheets. Fit the frames 8 - 15 on one stringer 18, and hold them in place using spring clamps or
strips of tape. Insert the second stringer 18 in the slots in the frames, then tack the stringers to the frames using cyano. Glue the battery plate 22
in the frames 12 - 15. Glue the two deck stringers 19 to the frames. The remaining joints are glued when the framework is fitted in the hull. Glue
the support 27 between the main deck supports 21.
Mark the height of the deck inside the hull, then glue the foredeck support 25 in the bow. Place the frame 17 in position. Lay the foredeck 64 in
place and clamp it to the bulwark. Now stand the hull vertically on its bow. Position frame 17 carefully and glue it to the hull. Remove the deck,
then glue the foredeck girders 24 in place.
Specification
Scale 1 : 32
Height 675 mm
Weight 14 kg
Beam 308 mm
Length 990 mm
Draught 110 mm