Marten Howes & Baylis

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 Steam Powered Dinghy Henry
Steam Powered Dinghy Henry
Ref: 9175
HENRY’ is a 1/6th scale model of a typical clinker built (lapstrake), powered working dinghy of 15ft 6 inches length, used for small vessel harbour towage, as a tender to larger vessels at anchor, or for pleasure. The boat kit and boiler unit are designed and manufactured in UK, the engines are made in France.












The construction of the model does not follow full size practice, but is intended to be an easily built, attractive and hard working model for use in sheltered lakes or swimming pools.

The kit contains one full sized dimensioned drawing, an instruction manual, several colour photo illustrations of various parts of the construction, a diagrammatic layout, (not to scale), of the pre-cut sheets of wood and styrene for identification.
The hull is a fibreglass moulding. The keel is constructed from three pre-cut layers of 3 mm beech with three layers of pre-cut pear at the stem. The interior planking is from 1.5mm pre-cut styrene sheet. The ribs and risings are in styrene strip. The gratings are assembled from 3.5mm x 3.5mm pre-cut beech. The decks and bottom boards are cut from 1.5mm lime.

Various sizes of pear, lime and spruce strip are provided. The fairleads and skeg are brass castings. The bitts are pre-machined from beech. The rudder gudgeons and pintles are machined brass. Stainless steel bolts and washers and brass ferrules are provided.

The steam plant is supplied fully assembled and ready to install. The boiler is of all copper hard soldered construction, hydraulically and steam tested. The gas tank is also hydraulically tested.

The Anton ‘Quartz’ engine is a twin cylinder, double acting piston valve unit of 8mm bore x 9mm stroke. It requires one servo for forward, reverse and throttle.
The Typhoon Motors ‘TM1’ is a single cylinder double acting unit, 12mm bore x 10mm stroke. It is fitted with a reversing lever and requires one servo for forward, reverse and throttle.

Glue, paint and varnish are not included, nor the Radio Control.



The hull is a fibreglass moulding. The keel is constructed from three pre-cut layers of 3 mm beech with three layers of pre-cut pear at the stem. The interior planking is from 1.5mm pre-cut styrene sheet. The ribs and risings are in styrene strip. The gratings are assembled from 3.5mm x 3.5mm pre-cut beech. The decks and bottom boards are cut from 1.5mm lime.

Above: Bow view showing flared brass funnel. The benches are from pre-cut pear ply.

Marten, Howes & Baylis steam plant for the ‘Henry’ with Anton ‘Quartz’ engine.




Left: Handed brass fairleads and central bitt. Fittings are solid brass castings and require only light finishing. The deck is constructed from lime and pear planks on a ply base, caulked with black card and sealed. The aft removable deck is planked in the same way.

First Image Shows General view including pre-cut building stand which is used with other pre-cut ply parts to hold the hull moulding during construction and can be used to display the completed model or as a template for the builder’s own stand.,
Next Shows Rudder with machined brass pintles, gudgeons and cast brass skeg. The rudder and yoke are constructed from five pieces of solid pre-cut pear. The rudder has an aluminium base plate and the 50mm propeller is solid brass. ,Last shows General interior view showing methods of construction







Various sizes of pear, lime and spruce strip are provided. The fairleads and skeg are brass castings. The bitts are pre-machined from beech. The rudder gudgeons and pintles are machined brass. Stainless steel bolts and washers and brass ferrules are provided. The transom and sheerstrakes are from 1.5mm pear ply, pre-cut ready to bond to the hull. The keel is formed from pieces of pre-cut beech pre- machined to take the 6mm propeller shaft. The stem is from three pieces of 3mm pear laminated to the keel.





SPECIFICATION:

LENGTH OVERALL: ..............................................................................30.5 (776mm.)

MAX BEAM OVER RUBBING STRAKE..............................................12.125 (308mm.)

MAX DRAFT OVER SKEG...................................................................... 3.25 (82mm.)
MAX DISPLACEMENT..................................................................... 8.5 lbs (3.83 kilos)
BOILER: VERTICAL, FIRE TUBE, GAS FIRED, ALL COPPER, HARD SOLDERED.

BOILER VOLUME .......................................................................................420 grms.

USABLE VOLUME......................................................................................250grms.

HYDRAULIC TEST PRESSURE........................................................150 psi/ 10 Bar

WORKING PRESSURE & SAFETY VALVE SETTING...........................60 psi/ 4 Bar

GAS TANK CAPACITY.................................................................................40 grms.
.
HYDRAULIC TEST PRESSURE.........................................................350 psi/ 24 Bar
.
ENGINE CHOICE:

ANTON ‘QUARTZ’:

TWIN CYLINDER, DOUBLE ACTING, PISTON VALVE ENGINE.
BORE: 8mm x 9mm STROKE
WORKING PRESSSURE....................................................20 psi/1.5Bar 40psi/ 3 Bar

TYPHOON MOTORS TM1

SINGLE CYLINDER, DOUBLE ACTING, PISTON VALVE WITH REVERSE.
BORE: 12mm x 10mm STROKE
WORKING PRESSURE............................................................... UP TO 3 Bar



Henry Model Steam Kit
Henry Model Kit 744.00
Henry With TM1 Steam Plant with Reverse 2,304.00
Henry With ready to install Quartz Engine 2,352.00


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