SB18 keel AGAIN!!!

Sail Boats 15' and up. Please include the boat type in your question.
Post Reply
jasongavin
New Poster
New Poster
Posts: 2
Joined: Thu Jun 16, 2016 2:28 am
Location: POrtsmouth,UK

SB18 keel AGAIN!!!

Post by jasongavin » Tue Nov 08, 2016 10:25 am

Hi Guys

I am busy getting materials together to start building and was wondering if anyone has used a different timber species for the keel? For some reason my suppliers in this area (South coast UK) are questioning the suitability of the timber. I have told them in diplomatic terms that they are not yacht designers and should just quote me for what I have asked. My thinking is to go for oak which I know is about 40% heavier but should be strong enough.

Any thoughts would be appreciated.

Cheers
Jay



User avatar
jacquesmm
Site Admin
Site Admin
Posts: 25130
Joined: Wed Aug 14, 2002 1:00 am
Location: Florida USA
Contact:

Re: SB18 keel AGAIN!!!

Post by jacquesmm » Tue Nov 08, 2016 10:32 am

You can go for oak but it is unnecessarily heavy.
I designed the boat but Evan Gatehouse did the keel engineering. Evan worked for Bruce Farr, designed America's Cup boats, he is a mechanical engineer and just finished sailing around the world. I think we can trust his keel specs.

Your advisers probably do not know about all the fiberglass layers that strengthen that keel.
If you want, you can add a couple of uni carbon layers and use the best resin, Silver Tip.
Jacques Mertens - Designer
http://bateau.com

User avatar
Evan_Gatehouse
Very Active Poster
Very Active Poster
Posts: 2856
Joined: Tue Aug 27, 2002 1:00 am
Location: Vancouver, BC, Canada

Re: SB18 keel AGAIN!!!

Post by Evan_Gatehouse » Sat Nov 12, 2016 12:25 pm

Hi,

What sort of wood do they suggest? Some wood species have the same name but are different wood in different countries I.e. mahogany.

White oak has a reputation for not bonding with epoxy well. But aggressively sand the bonding surface, wipe down with acetone to remove oils and you should be O.k.
designer: FB11/GV series/ HMD18/
SK17,21/MT24

jasongavin
New Poster
New Poster
Posts: 2
Joined: Thu Jun 16, 2016 2:28 am
Location: POrtsmouth,UK

Re: SB18 keel AGAIN!!!

Post by jasongavin » Sun Nov 13, 2016 5:56 pm

Hi Jacques and Evan thanks for the info. I agree on the oak being too heavy and have now found a supplier to get me DF so will go down that route. Time to order and start building!!! :D cheers
Jay

emosewa
New Poster
New Poster
Posts: 3
Joined: Fri Apr 28, 2017 12:22 pm
Location: venice,florida

Re: SB18 keel AGAIN!!!

Post by emosewa » Fri Apr 28, 2017 3:06 pm

I believe our 1959 mahogany Thompson wooden strake 15' runabout also has a Mahogany keel.
you might try looking into cypress. It is probably much more affordable.

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest