The price quoted for the 15W and attachments including gearbox, quotation dated 18/8/04, is as follows:

Bukh-Farymann 15W marine diesel engine incl:

Hurth 2.00 :1 reduction transmission with control cable and fittings

Air intake silencer

Starter motor 12V

Alternator 12V 160W

Battery charge regulator loose , flat plug

Fuel lift pump, self velt

Sea water pump

Thermostat 50 degrees Celsius

Exhaust temp switch

Oil pressure switch

Exhaust bend with cooling water injection

4 point engine bearers with 4 anti vibration mounts

Start crank handle

Control panel

Price:          £2690.00 Net, Excl. VAT, Delivered to mainland England

The 15W produces 6.5HP @ 3000rpm

The 15W and the 18W are believed to be the same price as they are the same engine,

 except that the 18W produces more power (18W 7.5HP @ 3000rpm)

N.B. The above HP figures are averaged or rounded off to represent one decimal place for ease of calculation.

Please see the tables at www.farymann.de for detailed information.

Delivery:      4 weeks from receipt of written order Payment:    

50% with order and balance before shipment.

Recent development

The Practical BoatOwner magazine reports: " Late in 2003, Danish engine manufacturer Bukh bought German manufacturer Farymann, builders of the 7hp (5.2kw) single cylinder diesel used in many small generator sets." This engine is now available as the marine engine Bukh DV7 ME 7hp  supplied with a ZF 2.05:1 marine gearbox. They say It comes with all the gear mentioned in the above specification for the15W diesel. the price is given as £2928.00. This sounds to me like the 18W diesel. However there it is ready for checking out.

Overall Dimensions:

                           W = 378mm 

                           H  = 414mm

           L  = 571mm 

Supplied with a 2:1 gearbox  (Recommended) 

 

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Click here to view Brochure 

 

BUKH DV7 ME

To give you some idea of engine size to boat size that have been used here are a few examples.

Recommendations. 

David Pragnell very kindly sent me this information from Barbados which I consider to be very useful.  The 18W is a 7.5 HP diesel engine.  The 15W is a 6.5 HP diesel engine.

"THE 18W FARYMANN DIESEL ENGINES WERE USED IN TARTAN 10 SAILBOATS IN THE 70'S AND 80'S.

ALSO CAPE DORY YACHTS USED THEM AS WELL. THEY WERE USED IN A NUMBER OF SAILBOAT APPLICATIONS IN EUROPE. 

THE PRICE FOR THE 18W ENGINE IS $ 3975.00 U.S.D. THE ENGINE WILL BE PREWIRED WITH A LIGHT PANEL, GEARBOX, ENGINE MOUNTS, GEAR DRIVEN WATER PUMP, CRANKHANDLE, AND TOOL KIT. THIS PRICE DOES NOT INCLUDE SHIPPING"

The T10 Built by Tartan  Designer:....Sparkman & Stephens (1978), 400 built 

Specifications LOA:....33' 0" LWL:....27'0" Beam:....9'2"  Ballast:....3,340 lbs.  Displacement:....7,100 lbs. Draft:....Fin....5'10"  

SA(sq.ft.):....Main &100%FT..486 Rating:....126

The Cape Dory 27ft used a Yanmar YSB-8 diesel engine.

The Cape Dory 30ft used a Volvo MD7A diesel engine.

The engine size per boat hull speed is largely a matter of trial and error and there is no point in overpowering as the boat will not exceed this hull speed without disproportionate power being applied.  The hull design strength should be considered as well, as overloading the bearers may not be advisable.  So engine weight becomes a subject for consideration.  Materials fatigue may well be of importance when considering the extreme buffeting that can occur out at sea. It is surprising what a small engine can do if it is properly geared and have the right size propeller.

I wonder what could be done with this engine using ducted cooling air etc... £299.00 !! gosh.

I am told that this is the eqivalent of the Yanmar L70 engine

Changfa CF178FE Diesel

Specifications:

Model CF178FE

Type Single cylinder,4-stroke,air-cooled vertical diesel engine

Combustion system direct injection

Bore × Stroke(mm × mm) 78 × 62 mm

Total displacement(L) 0.296 L

Compression ratio 20

Rated output 4.00 kW( 5.4 HP) 3600 r/min

Max output 4.40 kW( 6.0 HP) 3000 r/min

Cooling system consumption Forced air cooled

Lubrication system splashing

Starting system Recoil / Electric start (Optional)

Net Weight 33 kg

Operation direction of output axis left (viewed in the direction of output axis)

Volume of oil tank 3.5 L

Volume of lubricate 1.10 L

Recommended starting system over 12V-28AH (for electric start only)

12 volt built in flywheel charging system (for recharging the starter battery)

Overall dimensions (L×W×H)(mm) 383 × 421 × 450

 

Price £299.60

 

Sailing propellers

On the one hand, sailing yacht propellers are not supposed to disturb sailing performance, on the other hand however, they are supposed to allow outstanding motor performance.

Drag. This is the main argument in favor of a sailing propeller and should be as small as possible but still be able to deliver most of the power available.

There is no way of calculating propeller dimensions exactly for any boat.  There is no way of calculating how any boat will react to any given propeller.   In spite of extensive tank testing no method is 100% positive.  Each identical boat will react differently to an identical propeller.  Surface friction of the hull, hull shape, water salinity and sea state will affect the outcome.  However some numerical data is available based on past test results and common practice and has been documented.  This data when used is designed to give the best optimum propeller size and pitch for a given engine and hull shape.  Factors such as drag when sailing determine the best configuration of choosing a two bladed propeller.

Final propeller selection will be a compromise. Click here  The propeller I recommend is two bladed 9¹/2 inch to 10 inch dia. x 7 or 8 inch pitch propeller.

If you would like to download the propeller calculator itself for you to use Click Here

The final stage in selecting a propeller is to get clear agreement with the manufacturer or his agent as to the best propeller he has for the boat parameters given.

To see what your propeller will look like click here http://www.tnorrismarine.co.uk/inboard.php I have spoken to this supplier and they can make a 91/2 or 10 inch x 7 or 8 inch pitch propeller as required. Shop around!!

SPECIFICATIONS

Dimensions 15W