CHOOSE THE CORRECT PROPELLER

Transcription

1 CHOOSE THE CORRECT PROPELLER A correct choice of propeller is absolutely vital to get the most out of the engine and drive. Their performance decides whether the power produced is turned into boat performance or not. And it s not only size and pitch that matters. Genuine Volvo Penta propellers are all designed for their specific task. The wide range covers propellers for shaft installations, single-propeller drives, Duoprop drives and saildrives as well as for Volvo Penta IPS. MPS tool For correct analysis and prediction of boat related information such as propeller options, top speed, shaft dimensions, etc. Please refer to Volvo Penta Marine Propulsion Software at vppn.volvo.com. The MPS tool is intended for the Volvo Penta organisation, our boat builders and dealers. The MPS tool is free to use. 2

2 CONTENT Developed for perfect match 4 Propeller anatomy 5 Duoprop technology 7 POWERBOAT PROPELLERS SINGLE PROPELLERS FOR AQUAMATIC drives 0 SX drive 6 DUOPROP PROPELLERS FOR AQUAMATIC 280 drive Type A, B, C drive Type A, B, C 8 9 DPX drive Type E 9 DPS-A drive Type D, F, I 2 3 DPS-B drive Type FH, IH 4 5 DPH drive Type G 7 DPR drive Type GR 7 PROPELLERS FOR VOLVO PENTA IPS Planing hulls Type T, P, Q 8 9 Semi-planing hulls Type TS, PS 20 2 SAILBOAT PROPELLERS PROPELLERS FOR S-DRIVE Folding propellers Fixed propellers 26 PROPELLERS FOR SHAFTS Folding propellers Fixed propellers 26 VOLVO PENTA ANODES Anodes for propellers and drives 27 3

3 DEVELOPED FOR PERFECT MATCH Volvo Penta is world-leading in propeller design. Each propeller is developed exclusively for a specific drive and engine. The design is unique and gives high efficiency at all speeds, safe handling and excellent onboard comfort. Our propellers are made from high-performance stainless steel, aluminium or nickel-bronze-aluminium depending on the specific drive and engine. THE BUSHINGS Much more than a piece of rubber! Each propeller has its bushing specifically adapted to handle turning and pulling forces. The bushing gets its final shape and performance when the correct fastening torque is applied. Essential for smooth shifting and long drive-train lifetime. ELECTRICAL INSULATION To avoid costly galvanic corrosion Volvo Penta propellers have electrical insulation which is extremely important. SUPER-STRENGTH MATERIAL The different materials used are all super-strength and crafted for propeller duty. This gives a certain built-in flexibility. The material handles the forces without bending or breaking. THE EFFICIENCY A combination of curving, blade surface and cavitation design. Only when all these factors are perfect do you get maximum efficiency. THE BALANCE Each propeller is perfectly in balance, in weight, size and cavitation. Essential for secure grip in curves and driving safety. THE PERFECT CURVE Comes from thousands of computer calculations in a uniquely developed program 4

4 PROPELLER ANATOMY 3 OR 4 BLADES A 3-blade propeller usually offers top speed performance while a 4-blade propeller provides maximum thrust and smooth cruising operation. PITCH Pitch is the theoretical distance a propeller will move through the water for each revolution (i.e. a 2 pitch propeller should move a boat forward 2 for each revolution, assuming there is no slippage). CUPPED BLADES This is a technique used to enhance the performance of propellers under certain conditions; a cupped propeller will exhibit very high efficiency at high speeds as well as minimize cavitation under heavy loads. Cupped Un-Cupped DIAMETER Diameter is the distance across a circle encompassing all of the propeller blades. Measure from the centre of the propeller hub to the tip of the blades and multiply this by two. RIGHT HAND OR LEFT HAND ROTATION In most cases, right hand propellers are used for single engine applications and one right hand and one left hand propellers are used for twin engine applications to achieve better steering control. RAKE Rake is a special design feature. Positive rake benefits from normal bow lift to permit the use of a larger diameter propeller, while negative rake can provide extra blade strength for use in very high speed applications. 20 W.O.T. Wide open throttle. With the boat fully loaded the boat should run within 200RPM s of the maximum rated RPM of the engine. 0 Rake 20 Rake RPM: Revolutions per minute. Prop size differences have a big impact on boat performance. For example: If at W.O.T. the RPM is too high, you will need to try a prop with a higher pitch or higher diameter. If at W.O.T. the RPM is too low, you will need to try a prop with a lower pitch or a lower diameter. 5

5 VOLVO PENTA DUOPROP 6

6 VOLVO PENTA DUOPROP VOLVO PENTA DUOPROP Nothing bites into the water as efficient as Duoprop. It was introduced by Volvo Penta in 982 the biggest event in boating since the Volvo Penta aquamatic drive was introduced. PERFECT BALANCE Volvo Penta Duoprop have perfect balance between front and rear propellers. Wrong balance leads to excessive wear on the drivetrain. FASTER ACCELERATION, LOWER FUEL CONSUMPTION Duoprop provides up to 30% faster acceleration and produces a top speed 5% faster than any conventional single propeller system without increasing fuel consumption. With a partial load, you can expect between 0 and 2 % lower fuel consumption. FASTER PLANING A better grip in the water means getting up and onto the plane faster. And staying there at lower revs. MANOEUVRABILITY IS BETTER TOO Whether at high speeds, making sharp turns, or when docking in a crowded marina the grip is there. Duoprop also reduces the boat s tendency to roll. LOWER VIBRATION AND NOISE LEVELS Duoprop produces lower vibration and noise levels due to the fact that shock pulses are distributed over more blades. With its counter-rotating propellers, it is almost cavitation free. 7

7 VOLVO PENTA , DPX DRIVES DUOPROP FOR DP280, 290 DRIVES TYPE A Aluminium DP propeller for diesel engines. The unique design, of the 3-blade propeller in the front and the 4-blade propeller behind, is the key to the outstanding grip in the water. Note! Not for KAD300 A A A A A A A A A A A

8 VOLVO PENTA DUOPROP TYPE A, B, C, E, DUOPROP FOR DP280, 290 DRIVES TYPE B Aluminium DP propeller for gasoline and diesel engines. The two 3-blade propellers have very thin blade profiles, demanding the highest level of precision. For speeds above 35 knots we recommend the stainless Type C propeller. B B2 B3 B B5 B6 B7 B DUOPROP FOR DP280, 290 DRIVES TYPE C The Volvo Penta state-of-the-art stainless steel DP propeller has been specially designed to give maximum thrust where most needed. The high speed is achieved through thinner blades and powerful thrust. Greater torsional strength adds faster acceleration. The stainless steel material makes the propellers durable and highly resistant to cavitation, damage and corrosion. All these factors contribute to excellent handling and comfort. C2 C3 C C5 C6 C ACCESSORIES FOR DP TYPE A, B, C Propeller nut Propeller cone shaft 6 mm Tool kit Thrust ring Bellow kit, Exhaust (DP280) Lubricating grease 25g Thrust ring Bellow kit, Exhaust (DP290) Grease, prop shaft 400ml Zinc ring kit Bellow kit, Transmission (DP280) Propeller cone, shaft 20 mm Propeller cone shaft 20 mm Bellow kit, Transmission (DP290) Propeller cone, shaft 6 mm DUOPROP FOR THE DPX DRIVE TYPE E The stainless steel DP-E propeller is specially developed to handle the high forces of the DPX high speed drive. Handling speeds up to 75 knots put high demands on the propellers performance. E2 E3 E ACCESSORIES THE DPX DRIVE TYPE E Propeller nut Bellow kit, Exhaust Propeller nut Bellow kit, Transmission Lock screw Tool kit Lubricating grease 25g Grease, prop shaft 400ml 9

9 VOLVO PENTA SINGLE PROPELLER FOR THE DRIVES 0

10 VOLVO PENTA SINGLE PROPELLER FOR THE DRIVES SINGLE PROPELLER FOR THE DRIVES The increased blade area of the high speed propeller makes it most suitable for use with high power engines and at high revs. In a fast boat this does not only mean increased speed, it also means that a heavily loaded boat will plane more quickly and enjoy better fuel economy. The high speed propeller s excellent reversing characteristics also mean faster and safer quayside manoeuvring. ALUMINIUM HIGH SPEED LONG HUB PROPELLER V6 and V8 engines should always be fitted with the long hub which is also suitable for 4 cylinder petrol engines. HS = High Speed propeller Ø x PITCH 4 x x x x x x x x x x x x x x x ALUMINIUM HIGH SPEED AND STANDARD PROPELLER, SHORT HUB STD = Standard Propeller HS = High Speed propeller Ø x PITCH 4 x STD STD 4 x HS 8463 HS 4 x HS HS 4 x HS HS 5 x STD STD 5 x STD 8337 STD 5 x HS 8465 HS 5 x HS 8466 HS STANDARD PROPELLERS FOR 00 DRIVES WITH CYLINDRICAL SHAFT AND LOCKING PIN HS = High Speed propeller Ø x PITCH 3 x x HS 4 x x x x ACCESSORIES SINGLE PROPELLERS Propeller cone Bellow kit, Exhaust (DP ) Spacer ring Bellow kit, Tab washer Transmission (DP ) Thrust washer Tool kit Screw Lubricating grease 25g Grease, prop shaft 400ml

11 VOLVO PENTA AQUAMATIC DPS-A DRIVES 2

12 VOLVO PENTA ANODES VOLVO PENTA ANODES Anodes are to be sacrificed in order to protect the drive unit and propeller against galvanic corrosion. Volvo Penta anodes are tested and specially produced for Volvo Penta drives and propellers. The specifications are, in certain cases, more stringent than any other marine materials standards in the world. If 50% or more of the anode has been eaten away by corrosion it must be replaced in order to, once more, fulfil its vital function. Never jeopardize safety and performance by fitting a non-genuine anode. Remember to never paint over the anodes. Lower Gear Anode Spray Plate Anode Zinc Magnesium Zinc Magnesium Aluminium Single Aquamatic 00 drive SP drives Duoprop Aquamatic DP drive DPX drive DPS drive SX / DP-S DPH drive DPR drive S-drive 20S S /50S (2 pice) Transom Shield Anode Zinc Magnesium Aluminium Aquamatic 280 drive SP, DP drive DPX drive DPS drive SX / DP-S DPH drive DPR drive Proppeller Anode Zinc Magnesium Propellers for S-drive Folding propeller 2 blade Folding propeller 3 blade Folding propeller 4 blade Propellers for Shafts Folding propeller 2 blade Folding propeller 4 blade Fixed propeller For 30 mm propeller shaft W3/ For 35 mm propeller shaft W7/ For 40 and 45 mm propeller shaft W For 25 mm propeller shaft M For 30 mm propeller shaft M For 35 and 40 mm propeller shaft M For 45 mm propeller shaft M Anode Volvo Penta IPS Lower Gear Anode Transom Anode ACP Type of water Find our general recommendation on which type of anode should be used in what water type in below table. Saltwater Zinc Brackish water Aluminum Freshwater Magnesium Zinc and aluminum anodes will if left in freshwater become covered with a white oxide which effectively passivate the anode, zinc anodes suffer a similar problem even in brackish water. If the anode becomes passive, the drive will start to sacrifice itself, this will cause serious damage. Magnesium anodes will wear off much to fast in saltwater. 27

13 For the right propeller match: Use the MPS (Marine Propulsion Software) configuration tool, available on vppn.volvo.com English 202