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S&S Swan General - Swan 57: How to fly a Gennaker and fixing the problem with a proper Bow Roller?
10 January 2021 - 20:10
#1
Join Date: 22 May 2016
Posts: 8

Swan 57: How to fly a Gennaker and fixing the problem with a proper Bow Roller?

Dear Swan Mates,

Let me turn to you to find ideas and oppinions before we put the angle cutter in the stemhead and tear things off.

There are two issues. One that sounds simple to fix is that the bow roller is about Ø40mm and not rolling. Pulling the anchor up (all chain) is hard work for the Windlass and the temperure sensor sometimes shuts down.

The second issue is that without a bowsprit it is not possible to fly a Gennaker if you have a furling mechanism with a non tortional luff line and endless furling line. The pullpit obstructs the set up.

Also i'm very reluctant to complicating and cluttering the deck layout, i.e. not sympathetic to adding a bowsprit.

Since the genoa is roller furling, the pulpit is not used as in the old days, fidling with the genoa hooks, back to the waves. My thinking is to change pulpit (see "New Pulpit" below), cut the old support (facing forwards, see Pulpit cut 1a) and the sides of the Bow Roller support and weld on a new arrangement.

The new arrangement would have a 100mm roller, not as wide as the old one, protrude a bit further forwards so the roller can extend below the deck level. The arrangement would also have a fixing point fot the gennaker, probably about 100mm above the bow roller.

One priority is not to have to dismantle the stem head. It must be a gruesome task. Do you think it would be possible to weld on to the old stemhead, the new pieces without burning the GRP severely?

Another possibility may be that after cutting away the old anchor roller arrangement, so drill, tap an bolt on an new anchor roller arrangement. The forestay attachment would still be uncompromised and the only thing that could possibly malfunction would be the bow roller.

Any thoughts and ideas are most appreciated.

BRGDS
Mats @ Hermia II

New pulpit

Pulpit Cut 1a

Bow roller cut

11 January 2021 - 09:27
#2
Join Date: 29 January 2007
Posts: 838

Dear Mats,

could you please send me the images to my private mail and I will try to upload them from admin panel (maybe they were too big for our server)?

I am flying a gennaker and have no problem at all (I flyed it on 38/067 Only you and flying it now on 47/069 Vanessa), so, I think it's worth a trying before adding something on the steam head. I have a line which goes through the bow roller and up to the sail.

By the way if you need to modify it you should dismanthe it from the boat (which is a very good chance to check it properly) as welding would be to hot for the GRP hull.

Attached a couple of pics, sorry not detailed enough but hope they will give you an idea of my gennaker setup.

Fair winds!

matteo (47/069 Vanessa)


11 January 2021 - 12:29
#3
Join Date: 03 March 2007
Posts: 219

Hi Mads,

 

Take a look at this... I installed one on my 40.  I use it for my asym and my code zero-. 

Easy to install! and it does not take away from the beautiful lines of our boats. 

https://info.upffront.com/blog/looking-at-a-code-zero-you-need-a-trogear-bowsprit

 

So far so good. Happy with it but I remove it before anchoring and raise it before docking. 

Fair winds

 

Mike

 

 

11 January 2021 - 16:41
#4
Join Date: 22 May 2016
Posts: 8

Hi Mads,

 

Take a look at this... I installed one on my 40.  I use it for my asym and my code zero-. 

Easy to install! and it does not take away from the beautiful lines of our boats. 

https://info.upffront.com/blog/looking-at-a-code-zero-you-need-a-trogear-bowsprit

 

So far so good. Happy with it but I remove it before anchoring and raise it before docking. 

Fair winds

 

Mike

 

 

Thank you so much for the information. You do not feel that the rake of the stem is too close to the angle of the bobstay?

12 January 2021 - 13:40
#5
Join Date: 03 March 2007
Posts: 219

Hi Mads,

 

I discussed the installation with TROGEAR and they did not have any concerns. so far it has worked fine.. I suggest you contact them as your installation is a bit BIGGER.  Also Lars may have some thoughts on this.

 

If needed I can install it and take a few pictures.. The boat is in the hall at the moment.

 

Fair winds

 

Mike

 

12 January 2021 - 18:21
#6
Join Date: 02 January 2008
Posts: 1461

Mats and Mike

The Swan 57 gennaker halyard load is more than two times bigger than the load for Swan 40. Would be interesting to see what Trogear recommends
 
Mats
If you have a powered headsail furler it is important that you take a look at this Technical Paper: Headstay Chainplate Check before you set out on the ARC.
You can find it on the S&S Swan Association website
 
Kind regards
Lars

18 January 2021 - 18:02
#7
Join Date: 11 November 2010
Posts: 14

That's how we also fly the asymetric spinnaker on Snow Wolf (Swan48) and have never had any problems. Don't use it that often as we mainly use symetric spinnakers.

Snow Wolf on route to Las Palmas for the start of ARC 2010

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