Thread Tools Search this Thread
Old 29 July 2011, 12:08   #1
Country: UK - England
Town: Essex
Boat name: Club Boat
Length: no boat
Engine: Yam 40hp
Join Date: Dec 2006
Posts: 288
Honda 40HP prop

I am hanging my head in shame, 4 years and a decent looking prop, 1 decision = a nackered prop.

How do I measure which prop I want. What measurements do I take to work out which one we have at the moment, ie change like for like.


RAD is offline   Reply With Quote
Old 29 July 2011, 15:58   #2
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
Take the prop off, and you should [hopefully] find markings to indicate diameter (Honda 40 has a 3.25" gearcase, so something less than 12" diameter, I'd guess), and pitch whole number, likely 8 to 15". It will probably be marked similar to "10.75 x 11" which means a 10-3/4" diameter with a 11" pitch.

Your prop will be determined by: the diameter and spline count of the prop shaft (Honda is 13 spline, I think), the clearance between the prop shaft centerline and the bottom of the anti-ventilation plate, and the pitch (selected by the max rpm your motor will turn it at WOT.)

Hope this helps;

jyasaki is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:10.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.