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MAX PROP Easy, Instruction Manual

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6. DESCRIPTION OF THE PATENTED SYSTEM FOR SETTING 

AND / OR VARYING OF THE PITCH

(for convenience all the propeller pitches 

will be “improperly” expressed in degrees)

fig. 5

VITE / ASTA DI REGOLAZIONE 

DEL PASSO

PITCH ADJUSTMENT 

SCREW / ROD

GRANO DI BLOCCAGGIO

LOCKING PITCH 

ADJUSTMENT SCREW

VITE/ASTA DI REGOLAZIONE

PITCH ADJUSTMENT 

SCREW/ROD

ELICA - 

PROPELLER

 

VITE/ASTA DI REGOLAZIONE 

DEL PASSO

GRANO DI BLOCCAGGIO 

DELLA VITE/ASTA

SCREW/ROD 

LOCKING GRUB SCREW 

GRANO DI BLOCCAGGIO 

DELLA VITE/ASTA

SCREW/ROD 

LOCKING GRUB SCREW 

10

p.

Summary of Contents for Easy

Page 1: ...Instruction Manual EASY WHISPER automatic feathering patented propeller ...

Page 2: ......

Page 3: ... How to set the forward motion pitch of the propeller 6 2 How to set the backwards motion pitch of the propeller 6 3 How to vary the forward motion pitch and or the backwards motion pitch of the propeller 6 3 1 How to vary the pitch if you have a set of screws rods 6 3 2 How to vary the pitch if you have not a set of screws rods 6 4 How to know the value of the pitch set on your propeller 7 How to...

Page 4: ...propeller at the same time for example if two propellers have to be installed on a boat like in a catamaran you must therefore be very careful not to interchange parts 1 INTRODUCTION 2 CHECKS TO BE CARRIED OUT BEFORE MOUNTING THE MAX PROP PROPELLER ON THE PROPELLER SHAFT a Check that the values of the pitch and diameter set on your propeller are optimal for your boat If you have any doubts please ...

Page 5: ...erify that the key has the appropriate size it should have clearance on the upper surface in order to prevent the propeller from being brought off center but between the side surfaces there should be no clearance To verify this we suggest to insert the propeller on the propeller shaft without mounting the key and to trace with a marker or a point the precise position in which the propeller hub sto...

Page 6: ...e you need to remove the propeller To be sure that the above does not occur it is recommended after having screwed the nut up to abutment and before inserting the two locking nut screws to make the nut turn a few times so as to check that it rotates freely both in screwing and unscrewing Then return the nut to the stop position and secure it with the two locking nut screws fig 2 d Fill completely ...

Page 7: ...surfaces that rotate reciprocally 4 CHECKS TO BE CARRIED OUT BEFORE LAUNCHING THE BOAT a Lock the propeller shaft b Keeping the propeller shaft locked verify that the propeller body is able to freely rotate around the shaft itself so that the blades may switch from the forward motion position to the backwards motion position and vice versa simply by hand pushing The blades must not be grabbed with...

Page 8: ...pitch according to their needs This great advantage allows the pitch to be optimized if during navigation the performance is not completely satisfactory or in case of changed characteristics of the propulsion system If the engine does not reach the operating number of revolutions then the blade angle α must be decreased if on the contrary the operating number of revolutions is exceeded then the an...

Page 9: ...05 554 585 630 670 26 275 320 370 415 460 505 550 590 645 690 735 28 300 350 400 450 500 550 600 650 700 750 800 30 325 380 435 490 545 600 655 705 760 815 870 fig 4 PRACTICAL EXAMPLE The user can reach a maximum RPM 2 730 into forward gear while at the same speed he would like his engine to reach an RPM 3 000 It is therefore necessary to reduce the angle α previously set on the propeller If the p...

Page 10: ...s fig 5 VITE ASTA DI REGOLAZIONE DEL PASSO PITCH ADJUSTMENT SCREW ROD GRANO DI BLOCCAGGIO LOCKING PITCH ADJUSTMENT SCREW VITE ASTA DI REGOLAZIONE PITCH ADJUSTMENT SCREW ROD ELICA PROPELLER VITE ASTA DI REGOLAZIONE DEL PASSO GRANO DI BLOCCAGGIO DELLA VITE ASTA SCREW ROD LOCKING GRUB SCREW GRANO DI BLOCCAGGIO DELLA VITE ASTA SCREW ROD LOCKING GRUB SCREW 10 p ...

Page 11: ...etration depth of the screw rod supplied in the propeller body or if a shorter screw rod is inserted b Each screw rod used for setting the pitch is provided with a stamped even number consisting of 2 digits corresponding to a precise propeller pitch The higher the number stamped on the screw rod the longer the screw rod and the greater is the corresponding forward motion pitch c To make the propel...

Page 12: ...opeller assume the backwards motion pitch of 16 degrees it is sufficient to completely screw up to abutment the screw rod stamped number 1 Then lock with a threaded grub screw the screw rod in its housing To make the propeller assume the backwards motion pitch of 20 degrees it is sufficient to completely screw up to abutment the screw rod stamped number 2 Then lock with a threaded grub screw the s...

Page 13: ...tamped on the second screw rod 6 3 2 HOW TO VARY THE PITCH WITHOUT A SET OF SCREWS RODS The patented MAX PROP propeller pitch adjustment system offers also the possibility to vary the forward motion pitch and the backwards motion pitch even without a set of screws rod In fact it is possible to obtain the new pitch simply by unscrewing by a precise angle the screw rod already inserted in the propel...

Page 14: ...is therefore possible to set a backwards motion pitch of 20 without having the screw rod with the number 2 stamped on it b Eight equidistant grooves are carved in the head of each screw rod These grooves have dual capacity the first is the one described in the previous practical examples that is locking the screw rod up to abutment by fastening it with a threaded grub screw The second function is ...

Page 15: ...arting from the stroke position of this screw rod if you loosen three grooves of the screw rod the propeller pitch will decrease by 1 5 0 5 x 3 1 5 The propeller will therefore take a new forward motion pitch of 20 5 22 1 5 20 5 PRACTICAL EXAMPLE CONCERNING THE BACKWARDS MOTION PITCH A screw rod stamped number 1 has been screwed in its seat up to abutment therefore the propeller has a backwards mo...

Page 16: ...e pitch stamped on such screw rod PRACTICAL EXAMPLE CONCERNING THE FORWARD MOTION PITCH To reach the abutment position the forward pitch adjustment screw rod has rotated of 5 intervals that is the forward motion pitch has increased of 2 5 degrees 5 x 05 2 5 The number stamped on the screw rod is 22 corresponding to a forward motion pitch of 22 degrees The propeller forward pitch was therefore set ...

Page 17: ...anded In order to change rotation of your MAX PROP propeller from right hand rotation to left hand rotation or vice versa operate as follows referring to fig 6 a Unscrew the locking zinc screws and remove the zinc b Unscrew the locking nut screws and remove the nut c At the aft edge of the hub there is a seeger ring remove it by using the special pliers supplied on request 7 HOW TO CHANGE THE DIRE...

Page 18: ...forward motion position to avoid the thrust direction of the propeller to be reversed Therefore before putting into the reverse gear the forward gear has to be put into for a while b To arrange the blades in the feathered position the rotation of the propeller shaft has to be locked while the boat is travelling forward and the propeller blades are arranged in the forward motion position To verify ...

Page 19: ... they have not been corroded and check that there is good electrical contact between the zinc the propeller bronze and the propeller shaft the contact surfaces between the zinc and the bronze must be cleaned with abrasive cloth if they have incrustations 9 HOW TO SLIP THE PROPELLER OFF FROM THE PROPELLER SHAFT fig 7 VITI A TESTA SVASATA COUNTERSUNK HEAD SCREWS ESTRATTORE PULLER ANELLO PORTA ZINCO ...

Page 20: ... screw must be screwed into its threaded hole for a length not less than its own diameter The same screw when it is completely screwed and tightened against the puller must not touch the bottom of its threaded hole h Unscrewing the nut carefully verifying that all the screws collaborate on bearing the load necessary for extracting the propeller In other words that all the countersunk head screws h...

Page 21: ...ma Giri minuto motore massimi Rapporto di riduzione Giri minuto elica massimi 4 ELICA ATTUALE Diametro Passo Tipo Attacco Senso di rotazione Eventuali problemi riscontrati 5 ELICA MAX PROP Diametro richiesto 6 DIMENSIONI ASSE CONICO A mm G mm F mm N mm L mm S mm K mm Passo della filettatura H mm mm F Italiana ISO 1 10 Conicità 1 ꟷꟷꟷꟷꟷꟷ Inglese 1 12 A L Americana SAE 1 16 Speciale 1 Se le misure no...

Page 22: ...le controversy will fall within the jurisdiction of the Milan Courts Italy i The transport cost charged in the invoice from Max Prop doesn t include any insurance The costumer notes that the insurance even if pre paid from Max Prop from the order confirm and from the payment of the proforma is not included on the transport In case the customer wants to insure the shipment he will have to get in to...

Page 23: ......

Page 24: ...manufactured by MAX PROP viale Carlo Espinasse 101 20156 Milano ITALY tel 39 02 33 404 325 skype maxprop1 www maxprop it info maxprop it ...

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