Cal 29 M25XP prop - SailNet Community
LinkBack Thread Tools
post #1 of 4 Old 12-16-2010 Thread Starter
Junior Member
Join Date: Jun 2010
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Cal 29 M25XP prop

Hello all,

its me again. i have done some extensive searching here and have come up with a few different opinions and or views on prop sizing. so my question is.... do any of you Cal 29 owners have a M25XP and if so what size prop are you running and what kind of performance do you get out of it? im looking to replace my old pink one. My diver is thinking that the old one is 12" in diameter. I currently only make about 4.5 knots and am thinking i need a larger prop. I have read on one site that a 15X10 fits my engine although it might not fit my hull. I have also read that a martec 12X6 prop is correct also.


Adventure is knowing where you're going but not knowing how you're going to get there.

Last edited by helmanta; 12-16-2010 at 01:56 AM. Reason: better title
helmanta is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #2 of 4 Old 12-16-2010
Senior Member
tommays's Avatar
Join Date: Sep 2008
Posts: 4,304
Thanks: 1
Thanked 34 Times in 34 Posts
Rep Power: 9
I dont know what you should have but you need to know what RPM the diesel is making to see if its a motor or prop issue as the performance is really bad 6 knots should be easy

When i rescued my Cal 29 out of NYC i moved it over 18 miles with a 4hp outboard and it made 4.5 knots

1970 Cal 29 Sea Fever

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1981 J24 Tangent 2930
Northport NY

If a dirty bottom slows you down what do you think it does to your boat
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by tommays; 12-16-2010 at 07:15 AM.
tommays is offline  
Quote Quick Reply Share with Facebook
post #3 of 4 Old 01-20-2011
Senior Member
Join Date: Sep 2009
Location: Kingston Washington
Posts: 595
Thanks: 0
Thanked 7 Times in 7 Posts
Rep Power: 8
It all depends on what engine you have. Does it get up to RPM or not? If a diesel does it smoke? 12/6 is what they used with the atomic 4. Go to Moyer Marine website. He's done some research on Indigo and CDI props that are optimized for the A4. The manufacturer can tell you the best size and pitch. If you've got annother engine I'd go to the Michigan Wheel site and have them do the calculations. Alternatively the Propeller Handbook by Dave Gerr will take you the calculations. For my Beta 16 I came up with 8-9 in pitch. You can have a prop shop change the pitch a bit to optimize it. One thing is that ther's no room for a bigger blade than 12".
Waltthesalt is offline  
Quote Quick Reply Share with Facebook
post #4 of 4 Old 09-18-2014
Join Date: Sep 2014
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Re: Cal 29 M25XP prop

Repowering with beta 16 in cal 2-29 When I get my 20 posts I will Pm you with questions Walthesalt
blackbeard10 is offline  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
M25XP seawater pump will not pump anemoneii Diesel 6 04-22-2010 10:47 PM
Universal M25XP / Kubota D950 question kaptaindave Gear & Maintenance 8 12-02-2009 12:39 PM
Universal M25XP for sale inshallamiami Gear & Maintenance 1 02-02-2009 01:38 PM

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome