myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website

Welcome to myHanse.com the forum for Hanse Yachts owners throughout the world.

Forum Home Forum Home > Hints & Tips > 300 / 301
  New Posts New Posts RSS Feed - Keel hull fairing
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Keel hull fairing

 Post Reply Post Reply
Author
Message
Morgelyn3212 View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 21 November 2017
Location: Chichester
Status: Offline
Points: 7
Post Options Post Options   Thanks (0) Thanks(0)   Quote Morgelyn3212 Quote  Post ReplyReply Direct Link To This Post Topic: Keel hull fairing
    Posted: 25 November 2017 at 18:01
Hi all
Two seasons ago my hull was grit blasted to remove all the old antifoul paint. The hull is now lovely and smooth but some cracking has appeared in the filler between the hull and keel joint around the edges where I guess the blasting has disturbed the very thin bits at the edge. I have poked about with a chisel and the filler is some sort of grey very flexible material that seems go most of the way from just below the joint up to the hull getting thicker all the way to create a nice smooth curve. Does anyone know what the filler is as I need to dig a section out and replace
Thanks in advance
Phil
Back to Top
AlanL View Drop Down
Lieutenant Commander
Lieutenant Commander


Joined: 17 July 2017
Location: Gosport
Status: Offline
Points: 62
Post Options Post Options   Thanks (0) Thanks(0)   Quote AlanL Quote  Post ReplyReply Direct Link To This Post Posted: 25 November 2017 at 20:59
Hi Phil, Sorry I can't tell you what the filler is but just another thought, have you checked the keel bolts?  I stripped Hobo back to the base layer, then re-did the Gelcoat and antifouling and discovered I needed to tighten up the keel bolts to stop any slight movement and cracking.  I never had any water ingress before or after as fortunately Hobo seems to be a very dry boat, but it looked ugly and could have developed as a problem.  Since tightening the bolts I have had no issues.
Alan
Hobo
Hanse 301
GBR 2996L
Back to Top
Morgelyn3212 View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 21 November 2017
Location: Chichester
Status: Offline
Points: 7
Post Options Post Options   Thanks (0) Thanks(0)   Quote Morgelyn3212 Quote  Post ReplyReply Direct Link To This Post Posted: 25 November 2017 at 21:20
Thanks Alan I have tried the keel bolts to make sure there is no movement and all are good. Just seems to be the edge peeling due to the blasting then water has got in a bit deeper. I suppose what ever the rubbery filler is it's getting a bit old 2001
Back to Top
bovine View Drop Down
Commadore
Commadore
Avatar

Joined: 18 November 2007
Location: United Kingdom
Status: Offline
Points: 405
Post Options Post Options   Thanks (0) Thanks(0)   Quote bovine Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2017 at 10:21
Hi
I think you will find the rubbery fill has gone that way because of water saturation
They fair the hull with filler then then glass over it , probably best to remove it all and make your own filler using epoxy and micro balloons.
David
Back to Top
Morgelyn3212 View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 21 November 2017
Location: Chichester
Status: Offline
Points: 7
Post Options Post Options   Thanks (0) Thanks(0)   Quote Morgelyn3212 Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2017 at 20:29
Hi David
Looks like that is route I will take
Phil
Back to Top
StavrosNZ View Drop Down
Rear Admiral
Rear Admiral


Joined: 24 October 2014
Location: New Zealand
Status: Offline
Points: 556
Post Options Post Options   Thanks (0) Thanks(0)   Quote StavrosNZ Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2018 at 02:59
The hull will sag significantly when she is out of the water and on a cradle, when lifted in slings again the as keel weight takes up, this causes fairing cracking on many production boats.

Early practice was to hard fair the keel to hull joint but now they simply uses flexible sealant which better deals with movement.

I would put a big pipe on the powerbar that you are using to tighten your keel bolts (4ft plus length) and crank the keel bolts hard, you will be surprised how much more you can get out of them.


Stephen
2010 H400 #691, Auckland, New Zealand
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.063 seconds.

Links : www.hanseyachts.co.uk www.hanseyachts.com www.fjordboats.co.uk www.dehler.co.uk www.varianta.co.uk