Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 25-02-2022, 15:24   #1
Registered User

Join Date: Sep 2021
Posts: 4
Wharram Tangaroa Design Improvement Package

I have a Tangaroa MK1. I am going to be updating the beams to the tiki style beams. I have the design improvement package from Wharram. Does anyone have experience with making these beams? I have some questions about their construction.

Are the beams each 20ft long? Or each beam is different lengths?
I believe I am missing "panel dimensions sheet 2"

On the second page of the design improvement package do I follow these dimensions for the beam web parts? (I attached a photo for reference)

On the Tiki 38 sheet 4 plans there are drawings for crossbeams 1, 2, and 3, but not crossbeam 4. Is crossbeam 4 constructed the same as one of the other beams?

I hope my questions are understandable. Thank you for any advice!!
Attached Thumbnails
Click image for larger version

Name:	IMG_3209.jpg
Views:	120
Size:	393.0 KB
ID:	253585  
Mynamessandy is offline   Reply With Quote
Old 25-02-2022, 15:35   #2
Senior Cruiser
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: PORTUGAL
Posts: 30,742
Images: 2
pirate Re: Wharram Tangaroa Design Improvement Package

I believe beam 4 on the Tiki 38 is an alloy tube the same dimension as the main mast.
Keeps the weight down..
__________________

You can't beat a people up for 75 years and have them say.. "I Love You.. ".

"It is better to die standing proud, than to live a lifetime on ones knees.."
boatman61 is online now   Reply With Quote
Old 25-02-2022, 15:51   #3
Registered User

Join Date: Sep 2021
Posts: 4
Re: Wharram Tangaroa Design Improvement Package

From the plans I have it shows 4 beams and then the alloy tube.
Mynamessandy is offline   Reply With Quote
Old 03-03-2022, 17:03   #4
Registered User
 
andres's Avatar

Join Date: May 2009
Location: Uruguay
Boat: Wharram Tiki 26
Posts: 40
Re: Wharram Tangaroa Design Improvement Package

The Tiki 38 has only three beams and a "half beam" supporting the aft mast.
Attached Thumbnails
Click image for larger version

Name:	IMGP0706.jpg
Views:	101
Size:	362.1 KB
ID:	253931  
andres is offline   Reply With Quote
Old 03-03-2022, 17:37   #5
Marine Service Provider

Join Date: Sep 2012
Location: Virgin Islands
Boat: PDQ 36, 36'5", previously Leopard 45 cat and Hunter 33 mono
Posts: 1,345
Re: Wharram Tangaroa Design Improvement Package

Maybe the best answer would come from Wharram? Or whoever distributes the plans and left the drawing out?
contrail is offline   Reply With Quote
Old 04-03-2022, 17:19   #6
Registered User

Join Date: Feb 2019
Posts: 2
Re: Wharram Tangaroa Design Improvement Package

James Wharram unfortunately died a few months ago.
Mementomori is offline   Reply With Quote
Old 04-03-2022, 17:29   #7
Registered User

Join Date: Feb 2019
Posts: 2
Re: Wharram Tangaroa Design Improvement Package

Also, you might have better luck answering your detail oriented questions on the Wharram Builders forum, I've looked at it and it seems somewhat active. If the question isn't being answered immediately, maybe getting in contact with someone who has done a build wouldn't be a terrible idea. There's probably a dozen people who could talk your ear off who solved your current problem, future problems etc. That seems like one of the biggest perks about wharram builds is the community.
Mementomori is offline   Reply With Quote
Old 04-03-2022, 17:29   #8
Senior Cruiser
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: PORTUGAL
Posts: 30,742
Images: 2
pirate Re: Wharram Tangaroa Design Improvement Package

Hanneke Boon his designer is however still alive and kicking and the design team is still going strong.
__________________

You can't beat a people up for 75 years and have them say.. "I Love You.. ".

"It is better to die standing proud, than to live a lifetime on ones knees.."
boatman61 is online now   Reply With Quote
Old 05-03-2022, 14:01   #9
Registered User

Join Date: Oct 2019
Location: Kennebunk ME
Boat: Owner built 60’ Aluminum Expedition Yacht.
Posts: 1,854
Re: Wharram Tangaroa Design Improvement Package

Our first question is Why are you doing this “ improvement” ?
Try Boatdesign.net.
We remember an I beam but our recommendations seem too Industrial.
What are you trying to accomplish. It’s a rather old design and has been overtaken by technology. This was not a computer designed vessel.
Photos please or at least an more detailed explanation as to your aims...certainty it’s not to build exactly as some drawings indicates.
Several pertinent questions already asked. Please respond so we can assist.
Happy trails to you.
The manatee crew ( limited catamaran building experience)...but old and with some memory of these South Pacific DIY boats.
Manateeman is offline   Reply With Quote
Old 05-03-2022, 14:18   #10
Registered User
 
Chotu's Avatar

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 11,832
Re: Wharram Tangaroa Design Improvement Package

Quote:
Originally Posted by Manateeman View Post
We remember an I beam but our recommendations seem too Industrial..
My ears are burning. Ha ha ha ha.

I have to say, these more simple catamarans seem very refreshing from a builder’s point of view.

I’ve always admired the Waharrams.

Are the plans in the picture blurry to everyone? Or just me?
Chotu is offline   Reply With Quote
Old 05-03-2022, 14:34   #11
Senior Cruiser
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: PORTUGAL
Posts: 30,742
Images: 2
pirate Re: Wharram Tangaroa Design Improvement Package

I've made the beams for a Tiki 21 however those dimensions are obviously going to be different.
Picture of one below.
Attached Thumbnails
Click image for larger version

Name:	photo.JPG
Views:	64
Size:	89.5 KB
ID:	254013  
__________________

You can't beat a people up for 75 years and have them say.. "I Love You.. ".

"It is better to die standing proud, than to live a lifetime on ones knees.."
boatman61 is online now   Reply With Quote
Old 05-03-2022, 16:40   #12
Registered User

Join Date: Dec 2020
Location: Marco Island, Florida
Boat: self-designed 48' catamaran
Posts: 8
Re: Wharram Tangaroa Design Improvement Package

Yes, I agree: why are you making these "improvements"? I built a tangaroa mk 1 and sailed it across the North Sea, Atlantic, and Caribbean, lived on board for over 2 yrs with my wife. A great boat, tacked well, went to windward, and kept us safe.
. The Classic design is a very worthy vessel, using the 32 ( 4" angle iron/ threaded rod/ neoprene washers) flexible connections for the 4 laminated cross beams. Because the cross beams ride ON the deck, it is easy to keep rot under control, which isnt so with the Tiki lashings. I repaired a Tiki 26,so I know both designs. In my opinion, you would do better to keep the boat as is, and trade up to a Narai, with a longer waterline, and more room inside...Just saying...
tevake118 is offline   Reply With Quote
Old 05-03-2022, 17:27   #13
Registered User

Join Date: Dec 2011
Location: Fremantle
Posts: 559
Re: Wharram Tangaroa Design Improvement Package

The improvements packages are basically an upgrade for the classic designs to the more “modern” specs of the epoxy based Tiki designs.
Based around the Wingsail rig you can upgrade beams, lashings,deck pods, boarding ramps and outboard brackets.
These packages were demand driven from owners requests.
I looked at the 28’ Tanenui which is a classic design, the upgrade swaps out the cutter rig for the Wingsail sloop off the Tiki 30’ and the Tiki beams give you another 3’ of beam.
They are definite improvements.
Redreuben is offline   Reply With Quote
Reply

Tags
men, wharram

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wharram Tangaroa - This boat has been sold seacat Classifieds Archive 12 04-01-2010 18:03

Advertise Here


All times are GMT -7. The time now is 20:21.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.