DRAGONFLY Trimarans User Forum

Double Horizon

Your instinct is right cogniz -- don't delay that repair because it will fail completely (and hopefully not at the worst possible time). In my experience, the polyester bolt rope webbing only lasts about 3-4 years here in New England, even with the nets stored indoors from November through April. Th...

Double Horizon

What is the factory name? Can you provide contact information?

Double Horizon

Our wool curtains on the boat had developed widespread mildew spotting, and we found that soaking them overnight in a solution of OxiClean stain remover took care of it, 100%. I rubbed the stained areas of the curtains lightly against each other by hand after they had soaked a few minutes, and then ...

Double Horizon

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 get it down. My setup is a Wichard fixed eye quick shackle and dyneema lashing. http://marine.wichard...

Double Horizon

For smell abatement the answer lies not in cleaners or disinfection. The answer is aeration. Any organic material will decay ... if trapped without fresh air circulation the anaerobic bacteria will produce the foulest odors. If allowed to decay with adequate venting, the aerobic bacteria will flouri...

Double Horizon

Stefan Kolmodin wrote:Must be strong enough to tie dyneema ropes to the bowsprit base plate. No big forces with no movement/momentum. BUT these will possibly interfere with my huge gennaker coming down!

Maybe -- if you use the gennaker for gathering fish.

Double Horizon

I also have a DF1000. I added a line on each side with a snap shackle to the ama. The center hull attachment is simply tied around the aft end of my bow platform and it's plenty strong imho. The 1000's that came equipped with bow platform already had reinforced areas where the platform attaches. On...

Double Horizon

I also have a DF1000. I added a line on each side with a snap shackle to the ama. The center hull attachment is simply tied around the aft end of my bow platform and it's plenty strong imho. The 1000's that came equipped with bow platform already had reinforced areas where the platform attaches. On...

Double Horizon

I believe George is referring to a Model 1000. The folding (net) cable failed and the aluminum backup struts were not supported strongly enough at the cockpit wall attachments. The remedy was to reinforce the bow with fiberglass and backing plates from inside to provide a strong attachment, and atta...

Double Horizon

Preventative maintenance is always a good thing on a boat. Otherwise things fail and usually at the worst possible moment, as you experienced in this case. :roll: You might be able to find suitable replacements at a marine consignment store or eBay. Otherwise, shop your best deal. It costs what it c...

Double Horizon

The end pieces are a permanent installation. I think you will need to use a different type of replacement connector that is split and opens wider, such as one that uses two pieces to clamp over the bar.

Double Horizon

For anyone considering this job, the following information may be helpful. Cutlass bearing dimensions: 30mm ID x 44.45 mm OD x 120mm L This is made by Vetus model# SPRULAGER 30 The outer dimension of this Vetus part is specified as 1.75 inches (which equals 44.45mm). There is a set screw in the unde...

Double Horizon

George, Richard was joking -- he really just wanted to see you get in the water.

(I'm just kidding).

Double Horizon

Found a bunch of different forum entries regarding waterstay adjustment, mostly along the lines of "This is what Bob told me" or "This is how I saw Arnie do it when I took delivery." This is the first I've seen: " Follow the manual ; leave cotter pins just barely bent. When...

Double Horizon

Not familiar with black rubber tanks -- never heard of them being used by Quorning. After owning 3 DFs and sailing others I'd say it's "not their style" to use a bladder tank. Probably an owner mod.

I think you'll have to do your own assessment. Sorry I can't help more.

Double Horizon

Just purchased #242 and found some dark liquid in the bilge. The smell could be organic matter (cockpit drains?) that sat too long but could it be a leaking holding tank bladder? How long do they last? Source to replace it? Thanks to the collective wisdom. I'm not familiar with the DF800. What mate...

Double Horizon

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? Welcome to the Dragonfly owners user forum. I'm nearby in SW Connecticut, and owned a DF1000 for 3 years before I bought my DF1200. Maybe it was the ...

Double Horizon

I think you should try it. The only time the current overcomes the wind is when the wind is light. It only takes 3-10 kilos of resistance to keep the ball away. An elastic cord in 6-8mm diameter is easily capable of pulling more than that. If it ever gets much greater you probably would want the cor...

Double Horizon

Thanks for your replies. I realised that I had to take up the load on the winch, but too late to save my Halyard!! I will start again next season afresh, with your advice ringing in my ears!! On a separate subject I have also read the posts regarding setting up swinging moorings all of which is per...

Double Horizon

If you use my method you will have no more wear at the clutch than anywhere else on the rope. It will last 10 years or more.

Double Horizon

The reason your cover is worn is because you are releasing the Easylock clutch while the line is under load. If you first take up the load with the winch, then release the clutch, you will not have excessive wear. You can use a bowline or a fishermans bend, or any other type of knot that will not sh...

Double Horizon

We have folding Dahon bikes. When I had the DF920 I bought a Dahon Piccolo (which has 16" wheels). My newest bike purchase (with the DF1200) was a Dahon Mariner (20" wheels, more stainless components, including the chain and sprockets). We use both and they ride surprisingly well. I keep t...

Double Horizon

VDO's US support can be reached at 800-265-1818 Http://usa.vdo.com I have the documentation and I'm sorry to say it won't help you. The way the unit is adjusted is to physically change the pivot point of the float arm at the sender. The pivot must be positioned equal to the water level at half-full....

Double Horizon

For a difference of $35/pair why bother? You spend more than that on dinner for one. If you could afford a DF-35 just get the right part.

Double Horizon

On of my hatch handles is broken. I need to replace it with either original or a new locking type. Does anyone know the manufacturer of the hatch (mine is 2003 920)? Does anyone know a source for handles in the US? Are there after-market replacement handles that will fit? Thanks, george The hatches...

Double Horizon

I've done a lot of Amsteel splicing, and it's not difficult.

These are the instructions I use http://www.colligomarine.com/docs/misc/ ... ev_1_2.pdf

Will email you.

Double Horizon

The eyebolts should not have sideways loads. If the crane lifting bridle is used, with a crane -- the eyebolts should be rotated so that they are inline with the pull angle (the angle of pull should be inline with the metal loop that forms the eye of the bolt) so the eye isn't pulled off to one side...

Double Horizon

Never a platform lift; but I used to launch and haul out my DF920 and DF1000 using a rail car with my cradle tied to it. The rail car was attached to a cable that was hauled up by a winch on land. The tracks sloped into the water and could only be used for launching at mid-tide or higher. For haul o...

Double Horizon

snip Even if the four ropes going from the eyebolts to the crane hook are long enough to clear the lazy jacks, how do you prevent the mast from hitting the crane? When using a crane, people on the ground need to use dock lines (attached to deck cleats) to keep the boat from spinning or turning the ...

Double Horizon

Which model was this? I can't identify it from the picture.

I agree with Choppy -- it should be bolted not screwed.

Double Horizon

See for yourself:

Before:

During:

After:

Double Horizon

To rub off the vinyl there are rubber wheels that attach to a drill that are sold to auto-body repair shops. You should be able to find them locally. Also, the remaining adhesive is difficult to remove because solvents aren't very effective and you end up pushing the adhesive around a lot and removi...

Double Horizon

The issue is anaerobic bacteria. There is no way to keep the hoses clear or introduce fresh air between pump-outs, so organic matter sits in the hose and tank, and stinks. If you could introduce improved venting or keep the hose clear, aerobic bacteria would take over and the odor would not build up...

Double Horizon

No it didn't come off. I replaced it for preventive maintenance because I heard about another boat having an incident with that cable.

I considered using Dyneema but the cable may rub against hard marine growth inside the hole where it exits the transom. Stainess will not chafe.

Double Horizon

The rudder downhaul swage fitting should be inspected on an annual basis. If it shows signs of corrosion or any strands are broken it should be replaced. You will need a 6mm (or 1/4") 7x19 wire with an eye on each end. One eye must be attached after the cable is pulled and in place. The Drawing...

Double Horizon

That's a bit scary.

Double Horizon

Were they seized (stuck) or was it possible the threads were galled? If yes, perhaps the stainless guy "touched" them with too much force? If he was being a bit heavy-handed it might be defensive behavior for him to blame the materials. Or perhaps there really was a defective batch of hard...

Double Horizon

Very curious that there were two different failure modes: One where the bolt broke in the middle, and the other where the cap or head separated. What type of maintenance were you doing when you discovered these failures? Did they break when you were re-fastening, or when removing? What manufacture y...

Double Horizon

Thx for ur info people. I like the aft supports on the side better: easier for antifouling. Got an answer from Quorning after all: they only give the plans to owners. But I thought you are an owner? They should support people who buy used boats. Check with a DF dealer for your country -- if they're...

Double Horizon

gminkovsky wrote:snip
My cradle is different - the front supports are same, but the back is supported on a platform just aft of the centerboard trunk.

Ask them for the specs.

Yes gminkovsky is right. The aft support for the 920 is a single platform in the center just aft of the centerboard trunk.

Double Horizon

FYI I updated the image links in the post above

Double Horizon

I set up a new group on eBoatCards.com for those of us who want to be able to connect through a social networking site that's focused on boaters.

http://www.eboatcards.com/quorning-dragonfly/

Double Horizon

I started to look into that once and found the sailtimer app unfortunately isn't much good without the sailtimer instruments, which (like other sailing instruments) are quite expensive. If you were just buying instruments it might make you decide to buy theirs, but if you already have instruments it...

Double Horizon

I don't know what Quorning has in mind, but when you consider the high price of a DF28, they might be going for a lower price objective. A plumbed head with holding tank, and other permanently installed boat systems add greatly to the cost (and weight). This size is not going to be a "cruising ...

Double Horizon

Good idea to add the port. I also added a 4" port in the bow deck ahead of the furler on my 1000. Makes it much easier to access the below-deck cotter pin and clevis, and retrieve dropped parts/tools or service the pump-out fittings if needed. Please see my prior post about how to kill organism...

Double Horizon

I think you should sail the boat a season before buying more sails. Your personal sailing style and local conditions may allow you to be satisfied with what you already have ordered.

Double Horizon

Your cover would not chafe in the Easylock if you first take up the load on the winch before you release the Easylock.

My ropes are more than 12 years old with no chafe.

Double Horizon

With the boat folded, the amas and beams extend aft and affect the balance. The trailer and stand were designed for the DF920 touring. The Extreme model (with longer cross beams that extend further aft when folded) came later. From what you describe, they might not have modified the stand for this c...

Double Horizon

I replaced the vinyl stripes and letters on my prior boat, a DF 1000. I ordered them from Quorning. On my current DF 1200 I removed all the vinyl and replaced it with paint. I recommend that you use paint instead of vinyl. When you remove the old vinyl the edges will be visible, so you can tape the ...

Double Horizon

You're saying that an increased load on the main and headsail, regardless of wind direction, doesn't increase load on the forestay? I might be convinced when running downwind, but not when reaching or beating.

DRAGONFLY Trimarans User Forum

Search found 440 matches

Mildew stains on cloth

Re: Forward Support for Amas

Re: Forward Support for Amas

DF 1200 Cutlass bearing replacement 30mm shaft

Re: Adjusting the waterstays

Re: Holding tank bladder - Lifespan?

Re: Holding tank bladder - Lifespan?

Re: Performance difference between rotating & non rotati

Re: hatch handles

Rudder Downhaul

eBoatCards Group for Dragonfly Owners