Right Propeller for right application

[Ultimatt1]

I have a Bayliner 185 2007 with the Mercruiser 4.3 litre the drive is Alpha 21.81 Ratio D Drive 1.8
I cannot read the propeller part number stamped on the prop except for the last part which is A45P23Mercury. I am assuming that it is a 23 pitch it is alloy and I believe a standard prop, I want to reduce the pitch for better acceleration for Water skiing and towing for young and old, at the moment it takes along time to pull people out, would a 19 inch be acceptable and is it ok to use?
I would appreciate any suggestions I do want to go to a stainless prop also

Thank you in advance for your assistance
MJ

 

[travip]

Re: Right Propeller for right application

Hi There , have you tried calling the guys from Solas in QLD they should be able to assist you with qetting you the right application. remember when you go down in pitch you increase RPM but may not increase speed
Headquarters
Unit 2-3 / 1 Premier Circuit
Warana QLD 4575
Ph: 07 5437 9400
Fax: 07 5437 9537
sales@solas.com.au

www.solas.com.au

 

[bnicov]

Re: Right Propeller for right application

What is your current RPM at WOT??? Are you at the low end of the recommended range?? If so, then you can go down in pitch to a 21 for a drop of around 200rpm, a 19pitch may put you in a situation where you are over-revving the engine. A 21pitch 4 blade prop may be your best bet, the hole shot with a 4 blade is MUCH better.

 

[Ultimatt1]

Re: Right Propeller for right application

Hi There , have you tried calling the guys from Solas in QLD they should be able to assist you with qetting you the right application. remember when you go down in pitch you increase RPM but may not increase speed
Headquarters
Unit 2-3 / 1 Premier Circuit
Warana QLD 4575
Ph: 07 5437 9400
Fax: 07 5437 9537
sales@solas.com.au

Thank you for your quick reply and advice its greatly appreciated I will contact Solas

 

[Ultimatt1]

Re: Right Propeller for right application

What is your current RPM at WOT??? Are you at the low end of the recommended range?? If so, then you can go down in pitch to a 21 for a drop of around 200rpm, a 19pitch may put you in a situation where you are over-revving the engine. A 21pitch 4 blade prop may be your best bet, the hole shot with a 4 blade is MUCH better.

Bnivoc thank you for your advice I need to get more information re RPM at WOT I think a 21pitch 4 blade should be the way to go thanks again

 

[Ultimatt1]

Re: Right Propeller for right application

I contacted Solas as suggested they were great help they reccomended a 21p torquemaster $850 I think this may be the way to go if you have any other recommendations I would appreciate it, I have included boat spec that I know
Bayliner 185 2007
4.3 Key Start Mercury
Model: MCM 4.3 Litre
Displacement: 262 CID
Ignition / Timming: 10 o BTDC
MAX WOT. RPM: 4400 / 4800
Engine Rotation: L-H
Family: 7MAXM04.32 VC
Standard:14.0 / kw-hr
Displacement: 4.3
DOM: April 2007

STERNDRIVE

Alpha 2 1. 8 1 Ratio D
IDL34891
Drive Ratio 1.8
Alpha 2 1 . 8 1 Ratio D 5121400TS
Transom A117390
Propeller 832834A45P23 Mercury

My apologies for my ignorance I just want to get the right prop for old blokes to get out of the water easier and I dont want to blow the motor I am used to outboards

Thank you in advance regards Ultimatt1