Subject: Re: [harryproa] Repairs, shenanigans, and Daggerboards
From: "Mike Crawford mcrawf@nuomo.com [harryproa]" <harryproa@yahoogroups.com.au>
Date: 4/12/2019, 2:43 PM
To: harryproa@yahoogroups.com.au
Reply-to:
harryproa@yahoogroups.com.au

 


  Wow, that's ugly.

  You'd be less likely to see something like that with an HP because there's less hidden structure to inspect or worry about.  No keel bolts to stress-crack, no keel with weird lead-rot where things are about to fall apart, no daggerboards, cases, and so forth. 

  If you hit something with a rudder, it kicks up.  If you hit something with the hull, you damage the hull, but that can hopefully be seen in an inspection, /especially/ if you have flat bottoms and no false floor.

  The daggerboard/case thing is an odd example of risks people accept.  They do take up less space than a centerboard like on a dragonfly trimaran. 

  But that centerboard can kick up and be reset.  What happens to the daggerboard if you hit a sand bar, a whale, or a partially-submerged shipping container?

  If it's a good hit, the best case is that you had a crash case for the daggerboard, which is now lodged solidly in the case, probably immovable, but at least the boat is floating.  If the board breaks out of the crash case, or there was no case, now you're taking on water.

  Knowing that at some point almost all of us are going to hit something we don't mean to hit, I have a hard time with daggerboards for anything offshore.

        - Mike



'.' eruttan@yahoo.com [harryproa] wrote on 4/12/2019 7:59 AM:
 

Looking at this
http://forums.sailinganarchy.com/index.php?/topic/207765-the-daggerboard-fell-off/

One can appreciate not having a daggerboard and case.

I was thinking about how simple the design of HPs are. How they are simple to build and operate. And how that makes repairs simple too.

So, doing a thought experiment for a minute, how could one damage and repair a HP in such a way as to hide or disguise the damage and low quality repair in the manner of the link? And, how would one detect said shenanigans?

Now there is a kind of inherent 'not applicableness' to the whole idea, because all your HP owners are builders, (currently?) and have the skills to fix problems right. After building a HP perhaps ones brain it trained to not cheat like above. And the boat is pretty simple.

I remember Rob mentioned there was a problem with BL in there was something (peel ply?) left in an infusion that should not have been.

We just prior discussed how to deal with a hull holing at sea. Has Rob discussed how to do repairs properly? Most of it is typical 'this is how you repair foam and glass' concepts, and is not HP or II specific, right?

Your thoughts?


__._,_.___

Posted by: Mike Crawford <mcrawf@nuomo.com>
Reply via web post Reply to sender Reply to group Start a new topic Messages in this topic (2)

SPONSORED LINKS
.

__,_._,___