Jump to content

Rapido Trimarans - 2 x New Folding Models Coming !


Recommended Posts

45 minutes ago, Pantouf said:

... Maybe things are not going as planned?

What does?  

The actual build is being done by Triac composites in Vietnam among their many other products.   Boats are not their main source of income so caveat emptor is truly what is needed for these boats.  https://www.triaccomposites.com/latestnews/categories/passengervehicles

Link to post
Share on other sites
  • Replies 707
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

Honestly I don't know why I bother even responding on here sometimes . Yes I started this thread because I thought some people  might be interested in our approach to build relatively light weight hig

Really this is all being blown out of all proportion here ,  I have a friendly healthy relationship with the owner and yes there are always some issues on a brand new design  that need addressing

first dip in the river !

Posted Images

13 hours ago, Pantouf said:

As far as I read, they have not even completed any 50 yet. So I would imagine it will be a while before a 40 comes out. I do find it strange that there is so little media exposure about it. Even Paul Koch seems to have abandoned this forum, his last post being from 25th October 2019. If I were building boats, I would promote every part of the build on Youtube and here and everywhere. Maybe things are not going as planned?

Yes it is true , we are so busy working that I rarely get time to participate here ! The Rapido 50 Tooling is mostly done and we are into building the first boat that will be going to Europe in the summer this year . The first Rapido 40 should be done in the 4th quarter of 2020 . It takes time to do this stuff right !  They will be great boats when done and I cant wait to sail them !

  • Like 4
Link to post
Share on other sites
  • 2 weeks later...
3 hours ago, Veeger said:

I would assume that CNC machines make the process less expensive?  Certainly a whole lot faster!

Maybe not less expensive because of the capital investment but definetly more accurate and faster on complicated tooling that you need to mass produce folding trimarans !

  • Like 1
Link to post
Share on other sites

CNC were used on space shuttle exhaust cones (also made of Carbon fiber).  Tolerances were measured in molecules (kidding, but they were really tight).  That ground carbon fiber dust, though, was seriously toxic and pervasive.  

  • Like 1
Link to post
Share on other sites
13 hours ago, Veeger said:

Thermo formed-- awesome!  Plain foam? not core-cell?  certainly a closed cell foam, yes? (please elaborate)

In this case Thermo Formed 80 Kg and 100 Kg PVC foam from Gurit . Plain Foam means no grid scoring or slitting to soak up excess resin . It is perforated to assist infusion , lightest way to build a infused boat but labor intensive and requires a high level of skill from the guys fitting the foam as it needs to be a perfect fit . 

  • Like 1
Link to post
Share on other sites
33 minutes ago, Paul Koch said:

In this case Thermo Formed 80 Kg and 100 Kg PVC foam from Gurit . Plain Foam means no grid scoring or slitting to soak up excess resin . It is perforated to assist infusion , lightest way to build a infused boat but labor intensive and requires a high level of skill from the guys fitting the foam as it needs to be a perfect fit . 

Thanks for clarifying that for me.  That's the way my Mainecat was built as well (but I didn't pay attention to the weights and brand details)

Link to post
Share on other sites

That looks awesome Paul, thanks for sharing these new photos. Keep them coming! 

Will there be any metal on this boat? I.e. the rudder stock? Stanchions?  Or is it all carbon? 

And did I read somewhere the No. 1 Rapido 50 is going to Europe? Can you share where in Europe? (hope it is close so I can see it!)

Link to post
Share on other sites
2 hours ago, Pantouf said:

That looks awesome Paul, thanks for sharing these new photos. Keep them coming! 

Will there be any metal on this boat? I.e. the rudder stock? Stanchions?  Or is it all carbon? 

And did I read somewhere the No. 1 Rapido 50 is going to Europe? Can you share where in Europe? (hope it is close so I can see it!)

See the picture below , Rudder stock and Rudder is all carbon except for some foam each side to fill the gap between the skins. We are avoiding stainless steel as much as possible apart from a few pad eyes . Stanchions , pulpit , seats etc all carbon . All going well we hope to be at Cannes Yachting Festival in September and the first boat will live in Palma , Mallorca . 

DSC_0142 small.jpg

  • Like 1
Link to post
Share on other sites

Its interesting for non industry folks like me to see how boats are manufactured.  Thanks for posting.  Would love one of your vessels but its not in the budget.

Link to post
Share on other sites
12 hours ago, Paul Koch said:

It is coming and as we have sold 5 of them we had better get the whip out and hurry up ! It will be done this year ..

A Fleet! Sounds Good.

Link to post
Share on other sites
  • 2 weeks later...

Hey Paul, looking at the rudder (which looks like bomb proof!) photo, I assume there will be some foil at the bottom? To help the boat´s pitching stability?

Also, the folding mechanism, is that all carbon? or are the like metal bearings or rollers in it?

Thanks!

Link to post
Share on other sites
6 hours ago, Pantouf said:

Hey Paul, looking at the rudder (which looks like bomb proof!) photo, I assume there will be some foil at the bottom? To help the boat´s pitching stability?

Also, the folding mechanism, is that all carbon? or are the like metal bearings or rollers in it?

Thanks!

Yes the Rudder pretty well is solid Carbon made from prepreg cured in our Autoclave .

There is a wing on the bottom about a meter long . Folding struts are also prepreg carbon with huge titanium pins in carbon tubes lined with a bearing material . Light weight but massively strong ! The design and engineering that has gone into these boats is mind boggling. 

  • Like 2
Link to post
Share on other sites

A few more pics of the main hull before and after infusion , second half getting infused tomorrow . Plus a bit of progress on other bits like the daggerboard case and coachroof plug .

Daggerboard case is prepreg cured in the autoclave . The different colored foams are different densities for different areas of the hull . The pounding loads are significant when the boat can go to windward at 17 knots plus !

 

P1030069.jpg

DSC_2516.JPG

DSC_2518.JPG

P1030070.jpg

P1030072.jpg

P1030074.jpg

P1030075.jpg

P1030078.jpg

  • Like 3
Link to post
Share on other sites

In the third picture it looks like the I beam/bulkhead structure ends about 1/3 of the way back on the float. Are there any bulkheads or reinforcement on the back 2/3?

Link to post
Share on other sites

There are another 3 massive bulkheads and 2 girders running the full length of the floats !  WIP , just checking the fit , will be weeks yet before they are finally glued together after the folding system is fitted and working !

  • Like 1
Link to post
Share on other sites

Great photos Paul! These bulkheads look massive and massively strong! Question: looking at the float photos, it seems you cannot get into the forward 1/3 section? And I assume the rear 1/3 section will get a similar setup? Will these compartments be sealed? And if some water would enter into these sealed areas, how would you get the water out? And I suppose, how do these compartments "breath" with high and low temperatures or wave impacts?

Link to post
Share on other sites
8 hours ago, Pantouf said:

Great photos Paul! These bulkheads look massive and massively strong! Question: looking at the float photos, it seems you cannot get into the forward 1/3 section? And I assume the rear 1/3 section will get a similar setup? Will these compartments be sealed? And if some water would enter into these sealed areas, how would you get the water out? And I suppose, how do these compartments "breath" with high and low temperatures or wave impacts?

On Corsairs there is a deck inspection hatch for removing water, and small breather holes for air equalization.

Link to post
Share on other sites
13 hours ago, Mizzmo said:

On Corsairs there is a deck inspection hatch for removing water, and small breather holes for air equalization.

On Corsairs and other Trimarans these inspection hatches always leak ! We have purposely eliminated them . We have pipes going to the lowest point of each compartment and lead back to the centre section storage area where we can connect a pump to pump any area out . These pipes act as vents at the same time . 

  • Like 4
Link to post
Share on other sites

There's info about the Hammerhead 50 at the bottom of this page at boat design forums: https://www.boatdesign.net/threads/multihull-structure-thoughts.62361/page-64

I've long been a fan of the Hammerhead series and it's similar to the Rapido. Interesting to read about the performance of the Hammerhead.

Link to post
Share on other sites
14 hours ago, boardhead said:

How much does that ama weigh, what does it displace fully immersed and how far back from the bow is the CB?

The Ama weighs about 650 kg and and 200% buoyancy so about 15,000 KG I guess , you would have to ask the designer where exactly the CB is but at a guess about where the front beam is .

Link to post
Share on other sites

Thanks Paul. Looking at the picture of the guys strapping the ama bow together really accentuates the low height of the stem for wave piercing which made me curious as to where the buoyancy ramps up.

Link to post
Share on other sites
8 hours ago, samc99us said:

Thansk for the photos! I'm curious, as I haven't done anything quite at this scale (20' is my largest composite part to date), why join out of the molds? Better alignment?

Actually the parts are very dimension-ally accurate stiff and stable so there are no issues getting a good join out of the mold . But the main reason is we have to fit the folding system and beams in to the inner half before join up . We are also still making some molds for some parts so it is actually just dry fitted together at the moment . The rest of the boat is being built as we finish off some this tooling . It will all look like something very interesting in a couple more weeks .

Link to post
Share on other sites
  • 1 month later...

That is absolutely fantastic Paul. Making good progress. The black of the underwater ship is just carbon right? And not gelcoated? As it wil get coating and antifouling anyway?

Link to post
Share on other sites
9 hours ago, Pantouf said:

That is absolutely fantastic Paul. Making good progress. The black of the underwater ship is just carbon right? And not gelcoated? As it wil get coating and antifouling anyway?

This Rapido 50 is all carbon ! On our boats the underwater area is never gelcoated . Has an epoxy barrier coat followed by the antifouling . 

Link to post
Share on other sites
2 minutes ago, Shu said:

Nice.  Can't wait for the 40.

Are both of the molded in circular and faired items escape hatches? Why two?

The front one is the escape hatch from the forward cabin . In both the 50 and 60 we have a survival area under the cockpit floor that is accessed when upside down by the second aft escape hatch .

This area is above the waterline when the boat is inverted . Maybe overkill , but we have designed the Rapido Trimarans to be the safest offshore cruising boats available . We hope there is never a need for this survival area but it helps me sleep at night when we know we have done everything possible to create a safe fast boat !

This is also why we fit as standard a automatic fire control system in the engine room and we have no penetrations through any of the 5 water tight bulkheads in the main hull and the 4 water tight bulkheads in the floats .

Too many production multihulls ( most condo cats )  built these days have forgotten the basic principle that Catamarans and Trimarans should never sink . They also should float high enough when inverted for the crew to safely survive when inverted 

http://rapidotrimarans.com/why-a-rapido-trimaran

 

 

 

 

  • Like 6
Link to post
Share on other sites

I think you need to get that 40 up and running ASAP before you customer base spend all their money in Denmark at the Quornings!

Link to post
Share on other sites

I missed this tread for a while - just fantastic to se the process - and that the big cruising trimarans seems to be going. Here up north the boats sales has hit 6.gear after corona. 

 

Link to post
Share on other sites
  • 2 weeks later...
  • 2 weeks later...
On 6/12/2020 at 8:33 AM, boardhead said:

I think you need to get that 40 up and running ASAP before you customer base spend all their money in Denmark at the Quornings!

Ha!  I’d say there were two different customer bases...  So far, the Rapido looks far superior and well worth waiting for.

  • Like 4
Link to post
Share on other sites
14 hours ago, Veeger said:

Ha!  I’d say there were two different customer bases...  So far, the Rapido looks far superior and well worth waiting for.

Only time will tell.

Link to post
Share on other sites
On 7/20/2020 at 6:29 AM, Veeger said:

Ha!  I’d say there were two different customer bases...  So far, the Rapido looks far superior and well worth waiting for.

I have to agree with that. There is not much comparison between the two, except they are trimarans. It will attract a different clientelle all together. Nothing wrong with the Quornings Dragonflies, but they are no where near engineered and high tech as this Rapido 50 of what I can see of the specs, the designers behind it and how this is built. This is a weapon!

Paul Koch: will the 40 only be offered with helm steering? Or also wheel steering?

Link to post
Share on other sites
19 hours ago, Pantouf said:

I have to agree with that. There is not much comparison between the two, except they are trimarans. It will attract a different clientelle all together. Nothing wrong with the Quornings Dragonflies, but they are no where near engineered and high tech as this Rapido 50 of what I can see of the specs, the designers behind it and how this is built. This is a weapon!

Paul Koch: will the 40 only be offered with helm steering? Or also wheel steering?

The Rapido 40 will come standard with Tiller steering . Wheel is on the option list though it may disappear as I am struggling to figure out where to put it short of having 2 of them !

  • Like 1
Link to post
Share on other sites
On 7/29/2020 at 6:10 AM, Paul Koch said:

The Rapido 40 will come standard with Tiller steering . Wheel is on the option list though it may disappear as I am struggling to figure out where to put it short of having 2 of them !

There is a trend of two wheels on a trimaran when the designer can't figure out what to do!

 

Link to post
Share on other sites
1 hour ago, multihuler said:

Hi Paul,

My retirement included working, if I invest in the 40 can I become a US distributor? 

My wife loves boat shows, and i love deliveries.

Cheers, 

Stephen 

R2AKTEAMGOLDENOLDIES 

150607_MHP_Outside_R2AK_3981_zps8bvrjgkj.jpg

Hey I remember that day. Just north of Seymour Narrows R2AK 2015. Just before you turned around. Nasty day!

 

Link to post
Share on other sites
1 hour ago, D Wayne G said:

Hey I remember that day. Just north of Seymour Narrows R2AK 2015. Just before you turned around. Nasty day!

 

You were killing it with a triple reefed main and the smallest storm sail I have ever seen,  why didn't we wait an hour for the tide to change?

 

 

 

 

 

Link to post
Share on other sites
36 minutes ago, multihuler said:

You were killing it with a triple reefed main and the smallest storm sail I have ever seen,  why didn't we wait an hour for the tide to change?

 

 

 

 

 

Because we were RACING!

  • Like 4
Link to post
Share on other sites
On 7/23/2020 at 8:11 PM, Paul Koch said:

Rapido 40 Main Hull plug being machined now , float mold is finished , lots of floats coming soon !

Rapido 50 progressing rapidly , lots of photos coming soon !

 

DSC_0673small.jpg

Hit us Paul!

Link to post
Share on other sites
15 hours ago, Paul Koch said:

Another Tease !

DSC_0800.JPG

Okay!  You’ve ‘got me’.  (Might not be a buyer but I’m heading towards being a fan)

Link to post
Share on other sites
On 8/7/2020 at 2:45 AM, Upp3 said:

So you remove amas and the boat just walks to the shore?

Coffee keyboard spewing moment.  Seems like my kids had a wind-up bug sort of toy that did just that. 

Paul I think you have made the boat look very good.  Being in the PNW I appreciate a large windowed deck house like that.  Unfortunately my use case can't justify a 50 footer.

Link to post
Share on other sites

It would seem I'm being temped.  40' is closer but, no, I can't justify that either.  Looking forward to seeing it all put together though.  Thanks for sharing the builds.

Link to post
Share on other sites
11 hours ago, hannibalhouse said:

What is the earliest possible date any of these might be shipped?

The first Rapido 50 will leave the factory in September 2020 . The first 40 , November / December . If you want one you will have to join the line . We have sold 2 x Rapido 50's and 5 x Rapido 40"s so far so next available boat is June 2021. There is a long list of people waiting to see the first boat of each model so I think we have nailed it this time . In case you have not seen it here is the layout of the Rapido 40 

 

RT40_002_INTERIOR_GA.pdf

Link to post
Share on other sites