All things Class40

Greyhound37

Greyhound37

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Annapolis
Interesting. What do estimate the build to cost excluding sails and electronics? 
maybe Offshore Garage can build me one at a bargain price after the experience with yours :)

 
B

bushsailor

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QLD Australia
Revboat said:
No.  It's an original design.  The lines were drawn by Yves-Marie Tanton, a contributor on this forum.  He has posted some renderings above, although the design has changed in execution, as custom builds often do.  But it's his latest scow-bow hull design.  

We used male molds we built with a combination of carefully weighed hand-layup plus vacuum curing.   Labor intensive, but you get a very precise construction without the added costs of fabricating female molds. 

The scantlings, layout, sail plan, foil attachments, etc, etc. have been developed by a small working group that calls itself Offshore Garage -- i.e., "garage built" projects.

The whole idea is to try to build a latest-and-greatest Class 40 in a way that, you know, a normal person can actually afford.  

As I said, we continue to figure things out as we go...

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Great to see this type of thing happening.

Would be interesting to follow somehow?

I hope you have a few good people helping you.....a lot of work there!!!

 
R

Revboat

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Greyhound37 said:
Interesting. What do estimate the build to cost excluding sails and electronics? 
maybe Offshore Garage can build me one at a bargain price after the experience with yours :)
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That's the million dollar question (for those of us who don't have a million dollars).

Well, from zero to sailing, I think the build will cost about US$200,000.  (Unless my wife asks, in which case it's US$150,000.)  I'm still sourcing some things, and hoping for some used gear, etc.  We have no yard fees and low labor costs (depending how you think of it).  We have access to a machine shop and nice 3D-printing, so we've managed to make otherwise expensive items, like some simple halyard locks.  We built a makeshift foundry for the bulb.  What I'm saying is:  my cost figure includes a lot of self-built solutions as opposed to commercial ones.  

Our biggest cost saver had to do with spars.  Carbon mast, boom, and sprit with fittings plus shipping could easily be $90,000.  We determined we could build an autoclave, source some pre-preg, and do something entirely custom for about a third of that.  So, we're building a 20m autoclave from recycled pipe from a refinery.  Still waiting on some heat resistors for it, so all I can say is, it should work...

Among big ticket items, the all-important autopilot and the sails are still looming on my project spreadsheet (although some big sailmakers have been generous in their advice so far -- everyone likes a Class 40 project!).

There's loose talk of a hull #2, so hey, if you promise to show up at least once to help wth sanding...

 
R

Revboat

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bushsailor said:
Great to see this type of thing happening.

Would be interesting to follow somehow?

I hope you have a few good people helping you.....a lot of work there!!!
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I appreciate the encouragement, bushsailor.  

I planned to do a website or Facebook page for the project, but I'm wasting too much time calculating moments of inertia.  I'll let you know when I get something up.  

I'm a so-so craftsman with backyard experience, but our lead builder is the "retired" former owner of a large Asian custom boat factory.  He gets it done.

I see you're an Aussie.  Did you notice the Class 40s in the new double-handed division of the Sydney-Hobart?  Hope to be there some day.  (I'm in Hawaii, so practically in your neighborhood.)

 
oioi

oioi

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Awesome stuff revboat, good luck with project.  

As a way of keeping us updated you could just open a build thread here or keep us updated in this thread. 



I really enjoy reading this,  something similar for your class40 project would be great. 

Good luck,  when are you hoping to be on the water?

 
R

Revboat

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oioi said:
Awesome stuff revboat, good luck with project.  

As a way of keeping us updated you could just open a build thread here or keep us updated in this thread. 



I really enjoy reading this,  something similar for your class40 project would be great. 

Good luck,  when are you hoping to be on the water?
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Thanks, oioi.  I'd be happy to post progress here if folks are interested -- and also get the odd piece of good input as we finish the build!  I'll organize some build photos and videos and slap up a few that might be interesting.  

If all goes well, we'll have her in the water somewhere between April and June. 

WhatsApp Image 2022-01-15 at 7.58.21 AM.jpeg

 
F

furler49

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Worldwide
Revboat said:
Thanks, oioi.  I'd be happy to post progress here if folks are interested -- and also get the odd piece of good input as we finish the build!  I'll organize some build photos and videos and slap up a few that might be interesting.  

If all goes well, we'll have her in the water somewhere between April and June. 

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Will follow with interest! Keep up the good work!

 
B

bushsailor

Anarchist
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QLD Australia
Revboat said:
I appreciate the encouragement, bushsailor.  

I planned to do a website or Facebook page for the project, but I'm wasting too much time calculating moments of inertia.  I'll let you know when I get something up.  

I'm a so-so craftsman with backyard experience, but our lead builder is the "retired" former owner of a large Asian custom boat factory.  He gets it done.

I see you're an Aussie.  Did you notice the Class 40s in the new double-handed division of the Sydney-Hobart?  Hope to be there some day.  (I'm in Hawaii, so practically in your neighborhood.)
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Yes two handed is growing quickly in Aus.

There was a new scow class 40 in the Hobart race this year that was going very very well upwind the first day till they broke a backstay and that is not even its preferred angle.

Even I am putting together a 40' 2 hander (and I am very much a fan of multihull sailing). Are you going to keep your boat within the class 40 box rule or go for out and out speed?

I believe the new hulls can handle more water ballast for example.

 
R

Revboat

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Honolulu
bushsailor said:
Yes two handed is growing quickly in Aus.

There was a new scow class 40 in the Hobart race this year that was going very very well upwind the first day till they broke a backstay and that is not even its preferred angle.

Even I am putting together a 40' 2 hander (and I am very much a fan of multihull sailing). Are you going to keep your boat within the class 40 box rule or go for out and out speed?

I believe the new hulls can handle more water ballast for example.
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We're definitely keeping the boat within the box rules.  Innovation within limitation -- part of the fun.  

In the Hobart, I think that was the new Lombard 40, #169.  I saw a little video of day 1.  

What's your 40' foot double-hander?  I also sail multihulls here in the island fleet, but never an ocean-crosser.

 
oioi

oioi

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Revboat said:
Thanks, oioi.  I'd be happy to post progress here if folks are interested -- and also get the odd piece of good input as we finish the build!  I'll organize some build photos and videos and slap up a few that might be interesting.  

If all goes well, we'll have her in the water somewhere between April and June. 

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Great stuff,  keep us updated,  fascinated to see the boat come together.  Details and design choices are always welcome. 

 
R

Revboat

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Honolulu
huey 2 said:
Sam's Manuard design being built

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Wow, interesting photo.  This thing is structurally dense.  Partial bulkheads and ring bulkheads really crowded together.  Stringers and transverse ares stout -- not only large, flaring wider at the chines, but built in the shape of I-beams with meaty flanges on both the top and bottom.  It looks like some of the wider panels have stiffeners added to their centers.  And all in carbon.  No lack of rigidity in this hull.  

 
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