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  Topic: replacement pivot point "bearing plates" on the am
Mika Harju

Replies: 1
Views: 82

PostForum: HULL issues concerning all DFs   Posted: Mon 04 Sep 17, 6:51   Subject: Re: replacement pivot point "bearing plates" on th
Teflon PTFE sheet is the right material for these. UV resistance is good and it is low-friction. Nylon is NO good because of UV.

UV-resistance:
https://www.directplastics.co.uk/how-uv-affects-engi ...
  Topic: Measurements of the interior
Mika Harju

Replies: 4
Views: 139

PostForum: DF1000 General Topics   Posted: Tue 11 Jul 17, 12:11   Subject: Re: Measurements of the interior
Just wait...
Bo is the only person who is able to add files here. He'll do it later...
Very Happy
  Topic: Measurements of the interior
Mika Harju

Replies: 4
Views: 139

PostForum: DF1000 General Topics   Posted: Tue 11 Jul 17, 10:56   Subject: Re: Measurements of the interior
See attached file:

DF1000HeadCabinCushions.pdf
  Topic: High Tech sail set
Mika Harju

Replies: 6
Views: 4280

PostForum: DF1000 Rig/Sails   Posted: Mon 12 Jun 17, 9:58   Subject: Re: front sail genoa
Mine is DF1000R equipped with taller rotating mast. Mast profile length is 15008 mm. Attached a drawing of my jib and mast. If you need a ready designed 3D IGES file of the jib for your sailmaker just ...
  Topic: Rudder downhaul cable
Mika Harju

Replies: 6
Views: 272

PostForum: DF35 Hull   Posted: Thu 01 Jun 17, 7:18   Subject: Rudder downhaul cable
Take a look at this topic:
http://dragonfly-trimarans.org/phpBB/viewtopic.php?t=690

I bought it from Canada, CCI Competition Composites Inc
http://www.fastcomposites.ca/site/marine/foils-a-z/dra ...
  Topic: Rudder downhaul cable
Mika Harju

Replies: 6
Views: 272

PostForum: DF35 Hull   Posted: Wed 31 May 17, 10:34   Subject: Rudder downhaul cable
In DF1000 there are no sharp edges to chafe the rope. My rope is over sized Dyneema SK75 diameter 5mm without overbraid , Brummelman splicings on the both ends. I am replacing it with a new one every ...
  Topic: Rudder downhaul cable
Mika Harju

Replies: 6
Views: 272

PostForum: DF35 Hull   Posted: Tue 30 May 17, 9:18   Subject: Re: Rudder downhaul cable
Why not Dyneema?
I have had Dyneema downhauler for years now without any problems.
  Topic: Rain leak near mast
Mika Harju

Replies: 14
Views: 6662

PostForum: DF1000 Hull   Posted: Wed 24 May 17, 8:19   Subject: Re: Rain Leak Near Mast
This is really good news. Thank you for the update. So finally the leak was not from mast base as I (and you) thought.

I have struggled with this same problem for years. I have just yesterday fini ...
  Topic: DF32S Rig dimensions and 3D model
Mika Harju

Replies: 0
Views: 398

PostForum: DF32 General Topics   Posted: Fri 17 Feb 17, 12:08   Subject: DF32S Rig dimensions and 3D model
I am drawing a 3D model of DF32 Supreme rig and mast to design a sail set for it in co-operation with sailmaker.

Now I am missing the dimension for mast rake and bend, does anyone know the right d ...
  Topic: Replacement Mainsail
Mika Harju

Replies: 8
Views: 1580

PostForum: Rig/Sail issues concerning all DFs   Posted: Fri 10 Jun 16, 9:29   Subject: Replacement Mainsail
My racing laminate main from Gransegel is into season 13 now and still competitive - with a lot of care, some repairs and carbon fibre tape.
I have had three High Tech membrane sails from Gransegel. ...
  Topic: Replacement Mainsail
Mika Harju

Replies: 8
Views: 1580

PostForum: Rig/Sail issues concerning all DFs   Posted: Fri 10 Jun 16, 9:29   Subject: Replacement Mainsail
My racing laminate main from Gransegel is into season 13 now and still competitive - with a lot of care, some repairs and carbon fibre tape.
I have had three High Tech membrane sails from Gransegel. ...
  Topic: Ronstan (Frederiksen) 19 series batten car system spares
Mika Harju

Replies: 0
Views: 517

PostForum: DF1000 Rig/Sails   Posted: Mon 06 Jun 16, 10:37   Subject: Ronstan (Frederiksen) 19 series batten car system spares
Problems with Ronstan RC11966 batten cars. The ballway of End Cap 891858 is worn out and the balls does not roll nicely any more. They are jammed to each other and the car does not move smoothly.
I ...
  Topic: CAD drawings
Mika Harju

Replies: 6
Views: 3172

PostForum: DF1000 General Topics   Posted: Mon 23 May 16, 13:58   Subject: Re: CAD drawing modification
Done
  Topic: CAD drawings
Mika Harju

Replies: 6
Views: 3172

PostForum: DF1000 General Topics   Posted: Mon 23 May 16, 13:26   Subject: Re: CAD drawing modification
[/quote]
According to my measurements the width of the centre hull is 2745mm so it is too much for trailering. The measured weight of my DF is 3119kg.
There was one Italian DF1000 for sale a couple ...
  Topic: second Dyneema failure
Mika Harju

Replies: 2
Views: 1476

PostForum: General   Posted: Mon 31 Aug 15, 7:23   Subject: Re: second Dyneema failure

I think that if Dyneema has compression damage and the cover gets minor damage, the rope is shot! Even a little UV kills the dyneema fibers inside.

Dyneema has excllent UV resistance. This is fro ...
  Topic: Elvström main sail
Mika Harju

Replies: 4
Views: 1481

PostForum: DF800 Rig/Sails   Posted: Mon 31 Aug 15, 7:09   Subject: Elvström main sail
Hi !
Why do You want an Elvstrøm ?
Check also Ullman Denmark, they have a very good designer, Lars Bo, who does some really good sails, to a fair price.
Hi
Check also Gran Segel Sweden, they have ...
  Topic: Supports for dry winter storage DF35
Mika Harju

Replies: 4
Views: 1452

PostForum: DF35 General Topics   Posted: Mon 31 Aug 15, 7:03   Subject: Supports for dry winter storage DF35
It does not absorb water. It is dock buffer and sold by a local dealer in Finland. You should find it closer Very Happy
http://tuotteet.etra.fi/en/g19561418/dock-buffers
  Topic: Supports for dry winter storage DF35
Mika Harju

Replies: 4
Views: 1452

PostForum: DF35 General Topics   Posted: Tue 25 Aug 15, 11:22   Subject: Re: Supports for dry winter storage DF35
I hope these photos will help you. Works fine with DF1000.
Just for your information: http://dragonfly-trimarans.org/phpBB/viewtopic.php?t=20
Please click on any of the photos to see them enlarged! ...
  Topic: Waterstays
Mika Harju

Replies: 9
Views: 2794

PostForum: Rig/Sail issues concerning all DFs   Posted: Wed 10 Jun 15, 8:20   Subject: Re: Update 9Jun2015
Not trying to drive traffic to my blog, but it is easier to post a link....

So: http://skeelsrinehart.blogspot.com/2015/06/major-overhaul-2015-part-1.html
Great, thank you for this information : ...
  Topic: Main halyard block failure (2:1 purchase)
Mika Harju

Replies: 8
Views: 2421

PostForum: Rig/Sail issues concerning all DFs   Posted: Fri 05 Jun 15, 8:12   Subject: Main halyard block failure (2:1 purchase)
Thanks, but how do you attach the block to the mainsail headboard -- with a rope shackle?
Rope shackle is too long and slow to operate on top square main when you need to release the top quickly to g ...
  Topic: Main halyard block failure (2:1 purchase)
Mika Harju

Replies: 8
Views: 2421

PostForum: Rig/Sail issues concerning all DFs   Posted: Wed 03 Jun 15, 7:51   Subject: Main halyard block failure (2:1 purchase)
Mika, does your Dyneema halyard not slip through the clutch? (which do you have -- Easylock or Spinlock?)

The Karver block look neat -- do you have a pic of how you attach it to the sail? Does the ...
  Topic: Main halyard block failure (2:1 purchase)
Mika Harju

Replies: 8
Views: 2421

PostForum: Rig/Sail issues concerning all DFs   Posted: Mon 01 Jun 15, 7:46   Subject: Re: Main halyard block failure (2:1 purchase)
I will need to get a new block and new halyard, as that is likely also damaged.
(the set-up of halyard, block, shackle had been in use for years)

Did anyone have a similar experience?
Any clue w ...
  Topic: Rudder chassis support bar. How to remove it?
Mika Harju

Replies: 1
Views: 1213

PostForum: HULL issues concerning all DFs   Posted: Tue 17 Feb 15, 11:16   Subject: Re: Rudder chassis support bar. How to remove it?
No problem. It was easy to remove and there needs to be a non rotating plate with M10 thread inside.
  Topic: Rudder chassis support bar. How to remove it?
Mika Harju

Replies: 1
Views: 1213

PostForum: HULL issues concerning all DFs   Posted: Thu 12 Feb 15, 20:13   Subject: Rudder chassis support bar. How to remove it?
There is a welding failure on my rudder chassis so I need to remove it.

The lower support bar is installed with three M10 screws. Two at the front are welded to the steel bar and the nuts are insi ...
  Topic: Performance difference between rotating & non rotating m
Mika Harju

Replies: 4
Views: 2111

PostForum: DF1000 General Topics   Posted: Thu 11 Dec 14, 14:27   Subject: Re: rotating mast
Attached is a CAD drawing of my mast in PDF format. I hope there is all information you need.

DF1000R-8RigAssyV4Date051214.pdf
  Topic: Performance difference between rotating & non rotating m
Mika Harju

Replies: 4
Views: 2111

PostForum: DF1000 General Topics   Posted: Tue 11 Nov 14, 16:09   Subject: Re: Performance difference between rotating & non rotati
I Purchased a DF 1000 with a 15 meter non-rotating mast. Can anyone tell me the performance I would expect to achieve if the mast was made to rotate?
From sail engineering point of view a rotating ma ...
  Topic: Beware of boat heaters from Turkey
Mika Harju

Replies: 0
Views: 1657

PostForum: Motor/Equipment/Electrics issues concerning all DFs   Posted: Wed 18 Jun 14, 6:32   Subject: Beware of boat heaters from Turkey
I bought too cheap Eberspacher Airtonic D4 diesel heater from Turkey a couple of weeks ago.
When installed the heater did not start at all. After double checking all external connections I took a loo ...
  Topic: DF 1000 RAIN LEAK FINALLY FIXED !!
Mika Harju

Replies: 4
Views: 2043

PostForum: Motor/Equipment/Electrics issues concerning all DFs   Posted: Tue 03 Jun 14, 12:01   Subject: Re: DF 1000 RAIN LEAK FINALLY FIXED !!
[/quote]
Congratulations, I am still fighting with the same problem. This is my 4th year so I have still long way to go... Embarassed
  Topic: How to remove the daggerboard
Mika Harju

Replies: 0
Views: 2251

PostForum: DF1000 Hull   Posted: Wed 29 Jan 14, 6:46   Subject: How to remove the daggerboard
Next step is to upgrade the daggerboard. Cool
Has anyone removed it from DF1000? Is the system similar to DF800 where there is a locking screw near the pivot point and the pivot axis is fixed?
Any p ...
  Topic: High performance rudder
Mika Harju

Replies: 0
Views: 2123

PostForum: DF1000 Hull   Posted: Fri 24 Jan 14, 15:03   Subject: High performance rudder
I am about to buy a new high aspect ratio rudder for my DF1000R-8. The profile is NACA0012.5 and there is an adjustment system for rake angle to find out the right area for the balanced area. The blad ...
  Topic: DF 1000 polar
Mika Harju

Replies: 9
Views: 3696

PostForum: DF1000 General Topics   Posted: Thu 23 Jan 14, 10:03   Subject: DF 1000 polar

I am getting an NMEA - wifi device (just $120 or so), which should allow me to build actual polars in iRegatta.

I think there is no polars available for DF1000. I have spent a lot of time to loo ...
  Topic: Water Tank Access
Mika Harju

Replies: 4
Views: 2436

PostForum: DF1000 General Topics   Posted: Tue 14 Jan 14, 8:40   Subject: Re: Water Tank Access
Last summer, my wife noticed an odd taste in the fresh water. This led to attempting to replace the old vinyl water lines with PEX.

At the same time, I decided to clean the tank (turns out there w ...
  Topic: Wind instruments
Mika Harju

Replies: 4
Views: 2730

PostForum: DF800 Motor/Equipment/Electrics   Posted: Wed 18 Sep 13, 10:58   Subject: Re: Wind instruments
[quote="Cruiserfly"]
Take a look at this topic:
http://dragonfly-trimarans.org/phpBB/viewtopic.php?p=1362&highlight=airmar#1362
  Topic: Free Navionics charts
Mika Harju

Replies: 2
Views: 2164

PostForum: General   Posted: Fri 06 Sep 13, 8:49   Subject: Free Navionics charts
Looks like someone is sailing from Barcelona to Slovenia this month!

iPad + inavx or navionix seems like the cheapest solution. I have inavx and it works well with free US charts. Add pocketgrib an ...
  Topic: Free Navionics charts
Mika Harju

Replies: 2
Views: 2164

PostForum: General   Posted: Thu 05 Sep 13, 11:03   Subject: Free Navionics charts
Free charts of all seas but no GPS connection and no coordinates.
http://www.navionics.com/en/webapp
  Topic: Delivery Barcelona-Slovenia
Mika Harju

Replies: 6
Views: 3118

PostForum: General   Posted: Mon 19 Aug 13, 9:00   Subject: Re: Delivery Barcelona-Slovenia
Just for future information:
I am in with my 50 000+ NM sailing experience single handed during last 30 years. Last 15 000+ NM with my DF1000R.
  Topic: Rudder blade construction
Mika Harju

Replies: 11
Views: 6362

PostForum: DF920 Hull   Posted: Mon 12 Aug 13, 10:50   Subject: Re: Rudder wire worn
Why is there a wire that holds down the rudder? On a DF800 there is a regular rope.

Any known reason?
Old construction, I have replaced it with dyneema rope nowadays.
  Topic: High aspect ratio rudder
Mika Harju

Replies: 3
Views: 2724

PostForum: DF1000 Hull   Posted: Tue 30 Jul 13, 8:20   Subject: MP Venekuomu tramploines
Hi Pete
Finnish company MP Venekuomu has made at least 3 sets of trampolines to Finnish DFs so far. Their quality and materials are excellent and seams are both stitched and welded. This makes those ...
  Topic: Broken deck cleat
Mika Harju

Replies: 9
Views: 3673

PostForum: DF1000 Hull   Posted: Wed 19 Jun 13, 9:57   Subject: DF1000R-8 Setup. Drawing and photos


That is not a standard setup. I have never seen any Dragonfly with those extra backstays, or an eye bolt attaching the deck cleat. It looks like an owner add-on. Don't they interfere with the roa ...
  Topic: Broken deck cleat
Mika Harju

Replies: 9
Views: 3673

PostForum: DF1000 Hull   Posted: Mon 17 Jun 13, 19:29   Subject: Do not worry
I'm amazed you haven't been dismasted.
Steve B.
Do not worry Surprised
I have the same sytem than you have, BUT my running bacstays are there as an extra attachement. They keep the forestay tensioned and ...
  Topic: Broken deck cleat
Mika Harju

Replies: 9
Views: 3673

PostForum: DF1000 Hull   Posted: Mon 17 Jun 13, 9:53   Subject: DF1000R Running Backstay. Setup
Definitely a non-standard setup. Am curious -- Mika would you post pictures that show how the backstay is rigged?
This is my setup for running backstays. I am quite sure it is original, but anyhow t ...
  Topic: Autohelm ST50 speed instrument
Mika Harju

Replies: 2
Views: 2321

PostForum: Motor/Equipment/Electrics issues concerning all DFs   Posted: Fri 31 May 13, 8:56   Subject: Autohelm ST50 speed instrument
After winter storage my speed log does not work anymore. Power is on and timer etc. are working but the speed shows zero.
I have checked the impeller is rotating and also disconnected and connected a ...
  Topic: Broken deck cleat
Mika Harju

Replies: 9
Views: 3673

PostForum: DF1000 Hull   Posted: Fri 31 May 13, 8:25   Subject: Re: Broken deck cleat
These fit directly and are made of steel instead of aluminium alloy.
http://www.svb24.com/en/cleat-bulldog.html
They are quite heavy Embarassed but robust.
  Topic: High aspect ratio rudder
Mika Harju

Replies: 3
Views: 2724

PostForum: DF1000 Hull   Posted: Wed 29 May 13, 8:50   Subject: High aspect ratio rudder
My DF is quite much over powered, about 150%, the upwind sail area is now 78 sqm.
My rudder is loosing the grip too often when the speed exceeds 17 knots and now I am looking after a high aspect rati ...
  Topic: Genoa furling system jammed. Fixing instructions.
Mika Harju

Replies: 16
Views: 12952

PostForum: DF1000 Rig/Sails   Posted: Mon 06 May 13, 10:17   Subject: Re: Definitely NOT a Profurl.
Atttached you'll find a couple of photos of my furler. I hope these help you. This is Bartels Standard IV.
Please click on any of the photos to see them enlarged!

http://www.dragonfly-trimarans.o ...
  Topic: change the forestay and roller reefing ballbearings
Mika Harju

Replies: 7
Views: 3888

PostForum: DF800 Rig/Sails   Posted: Thu 18 Apr 13, 5:24   Subject: Re: Selmade
Here is also some information about this isssue:
http://dragonfly-trimarans.org/phpBB/viewtopic.php?t=15
This might also help:
http://dragonfly-trimarans.org/phpBB/viewtopic.php?t=332
Sorry, I d ...
  Topic: Swing Wing operating when docked
Mika Harju

Replies: 4
Views: 2281

PostForum: DF1000 Hull   Posted: Wed 27 Mar 13, 18:15   Subject: Re: Swing Wing operating when docked
Is it allowed to open the Swing Wing system (amas out) without any external support when docked on the winter cradle ?
The load for pivot axes will be quite high during the movement.
What is the wei ...
  Topic: Swing Wing operating when docked
Mika Harju

Replies: 4
Views: 2281

PostForum: DF1000 Hull   Posted: Wed 27 Mar 13, 9:15   Subject: Swing Wing operating when docked
Is it allowed to open the Swing Wing system (amas out) without any external support when docked on the winter cradle ?
The load for pivot axes will be quite high during the movement.
What is the wei ...
  Topic: Loose centre board
Mika Harju

Replies: 6
Views: 2706

PostForum: DF800 Hull   Posted: Mon 04 Feb 13, 6:35   Subject: Re: Loose centre board
Attached drawing might help you to find out where the problem might be.

Center Board Drawing
  Topic: Sail prices
Mika Harju

Replies: 3
Views: 3119

PostForum: DF35 Rig/Sails   Posted: Fri 25 Jan 13, 7:35   Subject: Re: Sail prices

The main sail for 35 Ultimate from NS in 3DL 680 (70:30 Aramid/Carbon) 19,600 Dpi costs 123.365 dkr, what is 16.537 (/7,46) Eu or 21.912 (/5,63) USD inclusive 25% danish VAT. Very similar price is f ...
 
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