Outboard problem

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Enmiga
Posts: 9
Joined: Tue Mar 21, 2017 8:41 am
Sailboat: MacGregor 26M
Location: Sestri Levante (ge) italy

Outboard problem

Post by Enmiga » Thu Apr 25, 2019 10:23 am

Hi everyone, I have a 26M I'm Italian and I live in Italy, I have a problem with my outboard, it's a suzuki 50hp from 2005, it has a short stem. the problem is that when I go to the motor and I am at 5000 rpm the propeller starts to thrust I have to lower the turns and I can't go beyond 7-8 knots. how can I improve this situation? can I extend the motor shaft or change the propeller? the house says 60hp but up to power it can be mounted? thanks for the answers and sorry but I used the translator. :macm:

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Tomfoolery
Admiral
Posts: 5208
Joined: Tue Jul 05, 2011 9:42 am
Sailboat: MacGregor 26X
Location: Rochester, NY '99X BF50 'Tomfoolery'

Re: Outboard problem

Post by Tomfoolery » Thu Apr 25, 2019 10:55 am

Is your antiventilation plate even with the bottom of the vee of the hull? If it's higher, that's the problem. It must be even or the propeller will suck air (called "ventilation" - NOT the same as "cavitation").

Slide down to picture.

https://www.mywestshore.com/boat-transom/

Il tuo piatto anti-ventilazione è anche con il fondo dello scafo V? Se è più alto, questo è il problema. Deve essere pari o l'elica attirerà l'aria (chiamata "ventilazione" - NON come "cavitazione", che è simile ma diversa).

Scorri fino all'immagine.


https://www.mywestshore.com/boat-transom/

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Carioca
Chief Steward
Posts: 92
Joined: Tue Sep 05, 2006 5:33 pm
Sailboat: MacGregor 26X
Location: Yorba Linda, CA.

Re: Outboard problem

Post by Carioca » Tue Apr 30, 2019 11:21 pm

Need 20 " outboard leg with a 12 x 3 x 9 pitch prop.

Maki katsu fari ??

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