Choisir une hélice :

Le pas d'hélice et les tours minutes du moteur influencent directement la vitesse du bateau. 
Si les tours minutes du moteur sont plus élevés que le régime conseillé par le constructeur 
il est préférable de monter une hélice 
avec un pas plus grand.
Si les tours minutes du moteur sont plus bas que le régime maximal conseillé par 
le constructeur il est préférable de monter 
une hélice avec un pas plus petit.
Normalement un changement de pas 
de 2 pouces fait varier le régime moteur 
entre 300 et 400 tours minute.

Le diamètre

Deux fois la distance entre le centre du moyeu et l?extrémité d?une pale, le premier chiffre dans la désignationLe diamètre

Le pas

La distance théorique que fait l'hélice en faisant un tour complet, le deuxième chiffre dans la désignation .

Nombre de pales, 3 ou 4 

L'hélice à 3 pales est utilisée dans la plupart des cas, la 4 pales est utilisée pour obtenir une accélération plus vive avec un bateau lourd ou quand le bateau tire un skieur (charge plus importante) Nombre de pales, 3 ou 4 ?

Hélice cuppée

Quand une hélice est cuppée les extrémités des pales sont légèrement courbées, facilite l'accélération et les performances.

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