DRAGONFLY Trimarans User Forum

buckle.roger

Hi One point after drilling a new hole to hlod out the amas it is still possilbe for the foraward arm to be push in and the ama bang the hull, you still need to drop a large fender behind the forward arm after folding, very easy. I only use the fender if big winds are forcast or I am leaveing the bo...

buckle.roger

Hi Guys The damage to the main hull were the amas hit can be avioded very easily, Drill a new hole in the saftey bars which holds the amas out a little, mine is such that I can open the hatches when folded, then if leaving the boat for any length of time or in big winds just drop a large fender behi...

buckle.roger

Hi

I live in Benissa full time and the boat is in Calpe

so if you woyuld like a sail contactme on email

buckle.roger@gmail.com

Good sailing

buckle.roger

Your comment on Dyneema knots slipping is very true. both my bow sprit down haul and more importantly my outhaul for the trampolin both let go with good old bowlines, just slipped undone

Be aware!!!!

buckle.roger

Hi Diana I think you will find that the round black push button is Ok as it is only a one time contact, The push puton operates a relay, this opften sticks if not used regularly, 'note, when on the boat operate all lights from time to time' Try pressing the button many times, sometimes this gets the...

buckle.roger

Yep an amazeing beast BUt I dont think Oracle started the race!!!! The race instructions state the if over the line at the start you must round one end, Oracle did not do that she just dipped over the line in the middle. I am sure the juges know the rules better than I BUT the race instrucrions do s...

buckle.roger

What has happened to the DF28, has on one bought one? we have No comments anywere from any owners
Lets be hearing what they are like to own/ sail

buckle.roger

This thread seems to have died? I have read two boat tests of the new DF28R, they were both in flat water and in good winds 20 plus knots, they seem to get around 16 kns so why is the 28 slower than all the others from 800 to the 35 and 1000 not to mention the 920, My 920 T seems to be as quick come...

buckle.roger

I was dumped into the water yesterday because my trampolin boke free when I was standing on it!! On inspection the out haul line had just come un done???? > so While I am looking I have checked the block arrangement as per Jens report, it is simple ( if all are the same as my boat 920 number 55 year...

buckle.roger

Thank you bo and Jens for this prompt report , it is most encourageing and as was to be expected no signs of design problems. but the correct rigging for this internal arm block is not described. As in my last post, one arm block in my 920 is being forced open I think by the outhaul line to the beck...

buckle.roger

Hi Ipe Thank you for posting your report, most helpfull, as I have said in other posts these are complicated boats that I think few of us fully understand. Jens told me that there are two types of saftey tubes 2mm and 3mm wall thickness, I had the 3mm and was completly unhappy with it, after a 60 mi...

buckle.roger

Ok this MAY be clear to you guys but I have only owned a Df for one year and it is a big learning curve from other boats. ~So I have just found that 50% on the bolts holding the folding hinges were loose on all 4 corners. I dont know if there is a recomendation to tighten these but I would say go ou...

buckle.roger

Hi Chris Pleased I could help. my engineers made a bronze bush in an hour, the lower rudder plate has captive nuts so with any luck you can just remove the lower braket and take it and rudder fitting to an engineer or as has been said try quornings I wonder how many Df,s are sailing with this proble...

buckle.roger

OK I THINK I may have the answer to this, I have just had my 920 out of the water and untied the stopper knot in the keel uphaul line, My keel front edge was about 30 degs from the vertical. When fully down in the keel slot the rear top of the keel exposess the uphaul line and knot and the top of th...

buckle.roger

Hi I have just had my 920 out to antifoul, it has had a lot of play in the rudder since i bought her a year ago, the lower support bracket pin and the hole in the rudder fitting were both perfectly round, which they would not be if worn, i suspect that there was a bush fitted by the factory which ha...

buckle.roger

THanks Bo , just what I needed to know, my keel is held by the knot and the keel , from the very bottom will go about 12 inches forward to the forward end of the keel slot.
I will try and undo the knot?????

Thanks again

roger

buckle.roger

Hi Ted

Thanks for your responce.

Should the keel go down until it stops against the hull OR should the stop knot hold the keel from bottoming ?
If the keel should 'bottom' what is the porpose of the stop knot

Thanks again

Roger

buckle.roger

Can anyone tell me the correct position for the 920 keel. when fully down against the stop knot my keel is not vertical, nor is it against the forward end of the keel slot, is this correct

Thanks for any responses asap please as I am out of the water for a few days only

buckle.roger

Hi

If you have never sailed a tri i have a 920 in Calpe, one hour south of Valencia if you would like to come and have a sail just contact me.

good luck

roger

buckle.roger

Hi you may have a prop with a rubber bush instead of a shear pin , in which case it is possible the bush has sheard, if so this will give thrust at low revs but will slip when aplying more power, if you have thrust at low revs and as you put on more revs and you dont get any speed this could be the ...

buckle.roger

Hi

If your mooring alows try not fully folding your 800 so that you have as much bean as possible when folded, I have drilled new holes for the saftey bar pin to hold my 920 out by abour 30cms to help in high winds

buckle.roger

Thanks guys for the comments, I will talk some more with my sailmaker.

buckle.roger

Hi Larry

Thanks again for your advice.my sail maker tells me that with vertical batens he can put roach into the sail and gain more area ???? I am not sure if this is good or not

buckle.roger

Hi all I have a new Pentex main sail that looks very nice, we shall see how well it lasts ? I need a new genoa, any ideas on the best material , I am not raceing but do want to sail well and for it ot last, My imediate thought is to us Pentex again, comments please. Secondly my sail maker wants me t...

buckle.roger

there were holes down the line of the crack which were just filled with filler The holes were there to stop the crack from growing. I've seen aircraft mechanics do the same. Hi you are quite right drilling a hole at the bottom of any crack will help stop it going further by spreading the load aroun...

buckle.roger

Ouch...... Better start reading up on fiberglass work.... Ouch indeed I did better than read up I got a pro to do it and the problem came to light. as he ground out around the cracking there were holes down the line of the crack which were just filled with filler, no gpr so this corner has been ver...

buckle.roger

(snip) I am disapointed to say that Jens has not responded to my email on this in 3 months ( how busy is he ? ) So do I just get the gel repaid or do I need to reinforce this area and if so how ? If anyone feels thay can help i/will email a photo good sailing One other thing -- I also suggest you e...

buckle.roger

Oscar wrote:Get SKYPE and start ringing and ringing and ringing..........

Good point

buckle.roger

[quote="Oscar"]You won't do any substantial reinforcement on the outside without aesthetic implications.... (translation=without seeing it). But, if it is indeed that structural a more in depth evaluation of what's going on is needed. There may be something amiss. I would up the urgency on...

buckle.roger

Fiberglas is flexible. Find out what is moving it when sailing.... is it the spray hood? Most likely. Is there someone who likes to hold on to it really hard? So, most likely some reinforcement will do the trick and your hull is not about to disintegrate. The easiest way to do it would be to get to...

buckle.roger

I don't think the part of the deck where the spray hood pivot point is mounted is a particularly high stress area. However, this is a favorite spot to step on when rigging/de-rigging at the beginning and end of season, or even when taking sails down or closing sail cover. I think the spot was damag...

buckle.roger

[quote="tpaliwoda"]Rodger: The one good thing to remember about a fiberglass boat is that it is basically easy to repair. You have to identify what is causing the problem and why is it flexing. If your not comfortable doing your own fiberglass work, I am sure there is someone around your m...

buckle.roger

I have a small series of cracks around the base of the spray hood pivot on the starboard side of the cockpit, I asumed that this was just cracking in the gel but when sailing in just 15 kns of wind these cracks are opening and moveing, NOW I am worried if this area is a strss area then I could have...

buckle.roger

I have a small series of cracks around the base of the spray hood pivot on the starboard side of the cockpit, I asumed that this was just cracking in the gel but when sailing in just 15 kns of wind these cracks are opening and moveing, NOW I am worried if this area is a strss area then I could have ...

buckle.roger

Hi all The main reefing lines come up and out of the mast into a fixed block and on through the sail. My problem is the line is chafing badly were it comes out of the fixed block as the run of the line is not good and the reefing line rubs heavely on the outer edge of the fixed block stainless mount...

buckle.roger

I have a standard Quorning-supplied Honda 10 with factory-supplied prop. I don't know the size. I have no way to measure RPM. To cruise on engine, I turn the throttle to the max, then turn back about 1/4 turn. This gives me average speed of 6.2-6.5 kn over relatively flat water. At this speed, I bu...

buckle.roger

what was the size of your original prop? Hi The 10 x 6 1/2 is the only prop I have had, all the figure i gave are for this same prop, When testing with the rpm counter I asumed that I would need a new smaller prop, BUT the engine was not pined correctly hence the 5.5kns. The way my honda has been f...

buckle.roger

There have been severalquestions re the correct propeler with no answers. So i have done some testing. Conditions, a 920 with a honda 10 hp, just antifoulded and calm sea max wind 5 kns. speeds aveage of 2 runs on GpS. IMPORTANT engine on middle tilt pin, vertical in the water. with a 4 blade alloy ...

buckle.roger

Thanks very much for the quick replies Bo and for the great web site, keep up the good work

PS do YOU know the correct size of prop for a 920 with a 10 hp honda by any chance, I am getting nothing back from the engine thread

buckle.roger

Hi Bo thanks very much for the quick reply.

Just to be totaly clear on this. you are saying that it is Ok to have the boat supported by only the 4 hinge pivot points with nothing under the main hull?

buckle.roger

Hi My last boat was a Hunter 43ft with a 50hp engine and before strong winds I needed to give that a great deal of revs engine to stop, so with an outboard with exhaust through the prop the problem is worse. however if you have to orijinal prop it is allmost certain that it is over sized and will ca...

buckle.roger

I dont know how to start this rolling but would someone who is VERY experienced offer to run a traning sesion? I would willingly offer my 920 here in Costa Blanca Spain as a base ( sailng all year round) or would the factory offer to put something on, (even at a cost) Looking at the user forrum it i...

buckle.roger

I have just had a very unexpected phone call from Arnie, he has picked up on this thread re movment of the amas when sailing hard into a sea at speed, he is up at the factory latter this month and will try and sort out the answers from them whilst there, he will post the result here. I thank Arnie f...

buckle.roger

Hi Bo If you have the time could you please answer this before monday 13 Oct as I am lifting my 920 then I am going to antifoul my 920 but have no cradle or trailer. you say to put crade aft, just of the cernter board, is this strong enough to be placed on a flat timber support? Can I place a simila...

buckle.roger

Can some one please let me know what is the correct size of propeler for the 920 with honda 10 hp, the standard is totaly over sized

buckle.roger

What propeller do you have, mine was fitted with a standard 4 blade aluminium 9 1/4 * 8. A fast calculation, 5500 rpm, 10% slip gives 14.4 knots. The result has been that my engine never gets more that 3000 rps and a lot of cavitation on the propeller. I had a hard time to get out of Helsinki in 12...

buckle.roger

I realise your point re it being a trip wire but it is the only way I can see of being able to add stiffness when at sea if it get rough as the bow line would not be much fun to fit at sea, You would not fit the bow safety stay at sea. It should be fitted every time you unfold the boat, so you woul...

buckle.roger

I have to fold mt DF 920 every trip so a line to both bows and tensioned is a bit of a pain, Can anyone see any reason not to use a similar arrangement but from the outer end of the aft arm to the inner end of the forard arm, this could be rigged at sea easily if and when the sea/wind required it ?...

buckle.roger

I agree with Larry: in normal use, the beam should not hit back on the strut. It might happen in a heavy seaway (though I never noticed). No oval strutholes on my 10 years old DF920. Might it be that your swingwingline is of the stretching type? Manual suggests using Spectra. THanks gents. I would ...

buckle.roger

It seems to me that this is the forum for this subject to continue, it is funamental to all Df.s and i am suprised as a new Df owner that the issue is not clearly undersood by many people, So please once again can the factory please get involved and anwser the questions please, As a new owner please...

DRAGONFLY Trimarans User Forum

Search found 73 matches

Loose nuts on folding hinge

920 Keel postion

New Genoa

Re: Cracking at base of spray hood mounting

Re: Cracking at base of spray hood

Re: Cracking at base of spray hood mounting

Cracking at base of spray hood mounting

chafing on mainsail reefing lines

Correct propeler for a 920 with honda 10 Hp

A sail training event for dragonflys

prop size for a 920 wirg honda 10 hp

Re: Honda 10 propeller

Re: backup for folding lines

Re: backup for folding lines

Re: Aka hitting back on strut

Oval holes in saftey struts from heavey weather sailing