575/588 - Prop replacement

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Prop replacement

Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 575/588
Forum Description: 575/588 Hints, Tips and News
URL: https://www.myhanse.com/forum_posts.asp?TID=15386
Printed Date: 26 March 2026 at 23:38
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com

Topic: Prop replacement

Posted By: Gale Force
Subject: Prop replacement
Date Posted: 06 October 2025 at 10:09

Has anyone had a propeller replaced with the boat in the water.Can it be done?

Cheers

Duncan

Replies:

Posted By: Wayne's World
Date Posted: 06 October 2025 at 12:18

Duncan,

I haven't done it but with the correct puller I can't see any reason why it couldn't be done.

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Wayne W
Cruising, currently in the Pacific until the end of 2026.

Posted By: Wild
Date Posted: 06 October 2025 at 12:38

It’s possible with a fix propeller.

With a flexofold it not recommended. You have to take blade by blade of to get to the shaftnut. On there website you can download the installation guide and you will see this is quit impossible to do this in the water.

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Wild and Wet
Belgium
545e#268

Posted By: Gale Force
Date Posted: 07 October 2025 at 05:55

Hi Wayne,Wild

Thankyou very much for your responses.I can confirm that there is definitely no enthusiasm to replace a flexofold prop in the water.The diagrams show a straight forward procedure on land and although it would be possible in the water I see to many ways for it to go wrong.So The boat will come out for a couple of hours for prop and anode change.

Cheers

Duncan

Posted By: Wayne's World
Date Posted: 07 October 2025 at 07:03

Duncan,

I had a look at the Flexofold website info and yep there are a few bits that would be easy to loose. If you have a travel lift available close by it would always be the best and easiest option. Is the prop damaged?

-------------
Wayne W
Cruising, currently in the Pacific until the end of 2026.

Posted By: Gale Force
Date Posted: 07 October 2025 at 07:35

Hi Wayne

Yes I do have access to a lift so thats no problem.If you recall I have written about my D3 failure and a Yanmar 110hp re engine.The only gearbox available was a different ratio

to the Volvo box but I tried it with the original 3 bladed prop.Consumption is higher and revs are lower so now putting the Flexofold recommended 4 blade prop for my new set up.

Lets see how we get on

Cheers

Duncan

Posted By: Arcadia
Date Posted: 07 October 2025 at 13:19

Duncan. I would think that the 4 blade would load the engine even more, unless the pitch was greatly reduced. Hanse usually used the 4 blade with the 150 hp d3. I’ve been using the 3 blade with my 110 hp which matches up perfectly. The engine can reach full rpm and the boat achieves 9 kts. I have the 23 x 16 so maybe a 23 x 14 or 13 ?

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Leon / ARCADIA
2018 Hanse 588
Sag Harbor, NY

Posted By: Wild
Date Posted: 07 October 2025 at 17:56

Same to our Hanse 545 :110hp Yanmar +Flexofold 3blade 23”x14 topspeed 9kn on 2.200 RPM.

We can go faster but than the steering becomes very heavy and the AP can not handle the job.

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Wild and Wet
Belgium
545e#268

Posted By: Gale Force
Date Posted: 08 October 2025 at 06:55

Hi Many thanks for your intrest.So here are the stats:

Old set up:D3 110 HP with 2.48 ratio gearbox and 23-16-3R Flexofold.Ran great until engine said goodbye at 1150 hrs

New set up: Yanmar JH4 with 2.45 ratio gearbox and 22-14-4R Flexofold.

The Yanmar revs higher than the D3

Looking forward to your comments

Cheers

Duncan

Posted By: Wild
Date Posted: 08 October 2025 at 08:27

Imo the 22 is a bit to small for your boat the 23-14 3R is maybe better.

Did you contact Flexofold jet ? They ware very helpful for me.

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Wild and Wet
Belgium
545e#268

Posted By: Gale Force
Date Posted: 08 October 2025 at 09:02

Yes it was fully their assessment so hopefully they know their stuff.I can report back next week!!

Thanks for your view point!!

Cheers

Duncan