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Mozzy Sails

RS800 Video

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20 knot northeasters feel a little colder in the Northern Hemisphere... chilly day out on Chichester Harbour, but we had the place to ourselves. 

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@Daniel Holman we were actually sailing quite far up your way, it's best bit of water at half tide despite being a little shifty up near Peacock. Thankfully wasn't as windy on Sunday as the forecast. 15-20 knots, flat water, wind against tide, blue skies; was almost perfect except it being 1 degree! 

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Man, you Brits are hardcore. It's like 50 deg F in the morning, and even though I know it will warm up to 65 later in the day, that's just too cold for me and I just go back inside for "second breakfast" instead.

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Funny you should say that, at the moment pretty much the whole country is shut down for a few inches of snow. Certainly doesn't feel hardcore, although it was mighty cold on the water last Sunday. 

I remember when youth sailing chatting to other sailors from Sweden, Norway, Denmark and Finland and seeing pictures of them pushing boats out past the ice to find some sea to sail on; that's hardcore! 

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On 2/27/2018 at 9:30 AM, mozzy656 said:

@Daniel Holman we were actually sailing quite far up your way, it's best bit of water at half tide despite being a little shifty up near Peacock. Thankfully wasn't as windy on Sunday as the forecast. 15-20 knots, flat water, wind against tide, blue skies; was almost perfect except it being 1 degree! 

Ha I'm actually a southampton water person, but 14ing takes us to chi harbour a lot

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Another little video. Much less wind this week, struggling to build power most of the time, but not as cold thankfully!

Got a second camera too (Yi 4k Lite) which seems to have much better quality and higher frame rte for slow-mo. Old GoPro 960 is on the boom and new camera is on the rack an my head. 

 

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Made a little video of my race from work to get out for the first evening sail of 2018. It's well over a month until evening racing starts, but for me the first dusk sail of the year is a significant mark of spring; far ore so than the equinox or changing of the clocks.

Got me thinking, here it's impossible to sail in the winter evenings, going dark at 4-5pm? But maybe the lower latitudes can sail all year round in the evening? Does that happen anywhere?

 

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It's not all plain sailing. First time out in over 20 knots and finding it a little challenging. Unfortunately the jib tack snapped on the first upwind so we didn't get a chance to put in an decent manoeuvres. Practised decent t bit of body dragging though! 

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Nice one! Shame about the mechanical. What is it with going into windward on the corners in big wind. So much of it is psychology I think. Tried to go out on weds but main kept pulling out of track... the struggle was real. And sweary.

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Definitely all in the head, we're through the gybe and should be safe. The problem is I get in my head that I have to race across the boat, whereas in reality I should be taking it more chilled and focusing on matching steering to our movement. So paranoid about hitting the wire quickly that I forget to steer the boat up in to the breeze on the exit! 

Then we just pilled in to the first wave before getting in the straps, unfortunate timing!

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Not an 800 video, but hope you enjoy nonetheless. Third race of the day in a building breeze. Weather mast read 30 in the gust but more like low 20s most the time. Nice and warm finally! 

 

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A bit of evening sailing put on our own. Nationals start in 7 days time at Weymouth. Last sail before then will be a pursuit race at our home club before packing up. 

 

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Last race before the nationals was 'interesting'. We managed to stick the bow in to a wave in the pre-start whilst doing some practice gybes out in the wave of the infamous Winner Bank. Looking back it was pretty stupid to be fooling around there just a few days before the nationals, but fortunately we go the kite wrapped away quick and on to the board to stop the mast bouncing on the bottom in the shallow water and waves. 

The pursuit race was perfect for us. Plenty of deep spinnaker reaches and some fast two sail legs. The hardest part was the multiple gybes going dead downwind in to the Thorney channel and back up, just as we were catching the main bunch of the fleet. After that though it was back up to the open harbour and we took a comfortable win. 

Then we took that form in to the nationals!

 

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I've promised the class a few videos on how we took our 10 year old boat, sorted it's systems and got her championship winning standard. The aim of these videos is to inspire those thinking of trying out the class to get involved. Or those who have a boat but need a bit of guidance to get it sorted and out racing. 

As the videos are aimed to encourage other in to the class, then I guess it makes sense to post them here, for those outside the class racing who are interested in the boat. Maybe I should have started a new thread, as this is getting a bit stale, but I don't want to cram up the whole subforum and equally it seems a few people return to this thread to watch the videos. 

First video below is about what to look out for when buying a used RS800 and some of the first jobs you're likely to want to do. I'm going to follow up with a few videos on the control systems. These are quite specific to the RS800, but there might be stuff in there for other sailing boat too. 

 

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Another video, this time on setting up off-boom sheeting for the crew on the RS800. 

The class previously only allowed deck sheeting with a cleat, and the crew wasn't allowed to play the main. The aim was to keep the class competitive for those with smaller crews. But in 2017 the class allowed off-boom sheeting with the crew taking the sheet. With ever more youth sailors being used to this way of sailing from 29er and 49er it made sense to allow it. But to keep sheet loads low and keep the class accessible for smaller crews it was decided to make a 3:1 purchase mandatory in the system. 

The 3:1 system has quite a lot of sheet to move, and with open deck and no nets on the racks the sheet can easily was out the boat. Travelling at speed it becomes very difficult to pull the sheets back and an even play the sheets. 

This video shows how we set up our off-boom sheeting with elastic take up to make the long sheets manageable. The system should be transferable to most skiff type boats with the idea stolen from what the top 49er crews are using. 

The class doesn't allow split strops on the bridle, just to keep things simple, this video shows the single adjustable splice we use to change bridle height; the same used on most 29ers. 

I hope you enjoy :) 

 

 

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We got out yesterday despite the weather warnings. Forecast was coming down all the time in the second half of last week, so it looked do-able, but could get challenging if we got caught in the back end of the rain.  

We got an extra coffee at the club, as the wind had increased sharply from 15 to 20+ knots and we wondered if it would continue building on that trend. But after 30 minutes of discussing which forecast was correct the wind seemed to have stabilised to about 20 knots. Plus the rain had stopped, so we rigged to go out. Club racing was still on although only a couple of boats chose to go out. We didn't race, but just went for a sail up and down enjoying the near full tide in the harbour. 

It was wind against tide, which made the waters right near the launching beach the most difficult in the main channel. But once out and past that we tucked ourselves up near the windward shore where the water was flatter for bear aways. 

The boat handling was fairly ropy as I was trying a new gybing technique, plus we'd moved where my trapeze lines are routed to... probably not ideal to be changing things up in this weather, but it was our last sail before the inlands and I was keen to test it all out.   

Anyway, we got out and back with no capsizes or breakages, and a relatively controlled return to the leeward shore by dropping our main. Just as we were de-rigging it got really fresh and they 40 knots on the race box! Glad we missed that.

Short but sweet clip, enjoy! 

 

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This tips video is super simple, but massively effective. Get your downhaul working as intended! I think t would be pretty relevant to any dinghy using lots of cunningham and a bolt rope / mast track. 

Like many skiffs the downhaul / cunningham is critical in RS800s for anything over 15 knots and once above 20 knots you will want to be cranking it on as hard as you can. The difficulty is that the standard 2x2x2 (8:1) cascade struggles for range and friction in the bolt rope leaves many sailing downwind with tension still in the cunno, de-powering the main when max power is wanted.

This is the third in a series covering the simple improvements and renovations we made to RS800 1144 to make get her systems working smooth and reliable.

Comment if there is anything else you'd like to know.

 

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cool stuff. Keep'em coming!

Regarding purchases, I've always traded more cascades for less range (more cascades of single blocks, instead of using a lot of doubles/triples) trying to be very precise in the splices and in range setup, because it makes the system much more slippery :) But as you say It's alway a compromise. ANd I have no Rs experience, I'm talking from moth tuning prespective.

 

Not really RS specific, but I have instead zero competence in choosing the material of control lines and sheets (line cover in particular), so any indication /advice in that would be great. And, moreover, are good ratchet blocks all equal?

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I think the range would be just about workable if you did every splice as short as possible, the trouble is we have to change the position of our racks depending on crew righting moment. This means the spare line in the system can be lost as the control lines are lead out wider. The easy way to accommodate that is to put a longer strop in through the eye in the sail (the first purchase in the system). This system you can extend that strop by 4-6 inches and still have plenty of range. 

Plus, it's only one extra block too, so it doesn't add loads of friction. 

Finally, the issue with easing the downhaul is that its not until you have eased kicker and main and sailed for a seconds downwind that the bolt rope moves up the track and all tension has gone from the system. The problem we were having was we'd ease the downhaul before the mark, then have to ease it again after hoisting as the sail had moved up and was now under tension again. A well lubricated mast track helps but until you'd full eased the main it's not going to move up completely. A strong release elastic means you can let off a load of downhaul and the bungy will hold the block up proving slack for the sail to move further up as you bear away and hoist (sorry if that's awkwardly explained). 

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2 hours ago, 17mika said:

Not really RS specific, but I have instead zero competence in choosing the material of control lines and sheets (line cover in particular), so any indication /advice in that would be great. And, moreover, are good ratchet blocks all equal?

We're using Rooster EasySplice for the control lines, I think it's an english braids manufactured rope. It can be made continuous with no change in diameter. 

EasySplice Video

Sheets we're using Rooster AllSpec Pro, which again I think is an english braids rope called D-Racer 16. It tapers really nice, comes in nice colours and the dynema core is colour matched to the outer. 

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Longer video, with a bit of split view this week. 

Trialling out new trapeze elastic routing for myself, with the aim to have the wires a little further out to make them easier to grab as I launch myself over the side!

Also trying a new gybing technique when I got out on the handle rather than hooking in to the hoop then taking up the slack as I got out. When the wires are low it seems a lot easier to grab for the handle rather than reach down to the hoop. The downside is you have to wait for the crew to hook you on. 

Going to try lower trapeze handles in the coming weeks and hopefully a shorter length between handle and hoop will make hooking on possible by myself even at the back of the rack.

Anyway, I hope that's of some interest to you, well done if you made it all the way through to the end!

 

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Another longer video, this time getting lined up against another 800. Nice solid twin wiring conditions and very flat water in the harbour made for a nice autumn sail. 

We're pretty lucky to have some good competition at the club in the 800, just trying to get us all out at once it the difficulty!

Unfortunately, we got a little too close to the bank on our last lap and took a chunk out of the foil. A shame as it had been a fantastic sail up til then. 

 

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I found out you can sync GPS data to footage using Garmin's Virb Edit free software without having to have a Garmin Virb camera... so here's last Sunday's sail with some metrics overlaid. I think it's quite cool.  

I did a breakdown of a few a manoeuvres plus some other 'interesting' parts of what was quite a breezy sail. 

I'm quite happy with how the data came out. I know from cycling that using GPS for speed can lead to speeds jumping about a bit. But with this units GONLASS addition it seems pretty good for the purposes here. I was also surprised at how steady the bearings for heading are. Allowing for tide it should give a pretty good idea of shifts and mode changes (coupled with speed). 

I'm hoping in the future with the audio from a head camera, plus a second camera on the boom, plus an inserted overlay chart with the track on top it should give a pretty good insight to review races. Shifts and gusts, listening back to tactical discussions, seeing where we were on the course etc. 

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Totally forgot to start the GPS on our next sail, but I think the overlays are more interesting for racing anyway.

Here's a different style of video where I talk through our boat handling and a few of the things we've been working on in training. I hope you find the commentary useful. 

 

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Yeah, sorry, it's not very detailed in places and assumes decent knowledge of the boat and sailing style! Hopefully it was still interesting though. 

I'm planning a couple of videos going in to more details and taking things from a more basic starting point for those not familiar with the RS800, skiffs or trapeze boats.

After Christmas I was planning a video on trapeze hooking on and stepping out methods and a guide on when you might use each technique. Plus a RS800 boat 'tour' showing some of the systems and how the weight equalisation works to give people a better idea of the class.  

I'm not pretending to be the worlds expert on any of this, but when I got back in a trapeze boat last year I was surprised at how little there was online on technique. 

I've also got a couple of RS800 boat prep videos left to get out on the trapeze elastic systems and launch line, but they're very class specific. 

I'll record the pursuit race at the weekend and do a talk through of the performance, hopefully with the GPS overlay, looking at race decisions and how they impacted the result etc...

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I really enjoy your videos.  Thanks for posting them.  Especially liked the deadpanned shallow water speed analysis.

Too many sailing vids are just "look at me reach!".  I like how you include the maneuvers.  The overlay is cool too.

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Thanks @efrank! Glad they are of interest. 

Here's the latest from our Christmas race at Hayling: hopefully the overlay and commentary make it a bit easier to appreciate what's going on in the race!

 

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The video is fantastic. Watched it with my 9yo son -- he wants to sail 29ers -- and it had us hooked. You've put a ton of work on the boat, technique and on the video editing. It shows. Thank you!

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If you've watched the previous videos, you've probably seen most of this. But here's a reel of our winter training so far, trying to get a little bit better as the temperatures get lower. 

No analysis or commentary or any of that, but I hope you like in nonetheless. 

 

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On 9/16/2018 at 11:43 PM, Mozzy Sails said:

 

This video shows how we set up our off-boom sheeting with elastic take up to make the long sheets manageable. The system should be transferable to most skiff type boats with the idea stolen from what the top 49er crews are using. 

The class doesn't allow split strops on the bridle, just to keep things simple, this video shows the single adjustable splice we use to change bridle height; the same used on most 29ers. 

I hope you enjoy :) 

 

 

Have been looking at a smart solution to take up the tail end of the main sheet on the 29er, especially when soloing, but never found a set up with enough "range" in the shock cord take up. Obviously your set up seem to work for you, but seems at first counterintuitive: looks like the elastic will pull more when the pole is out, whereas I would need it more when going upwind (as the main is in and the tail end of the sheet is longer). Am I missing something? I would almost be inclined to try to rig it in the opposite way (run through a block on the bow and then reverse to the rear end of the pole).

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Upwind I'm holding the jib and crew is holding the main, so the sheet has to come out over the side twice. Downwind no one has a hold of the jib sheet, so that's where you need most take up. 

It's counter intuitive at first, as like you say, downwind you let the sails out and that should leave less tail. But it works perfect. And elastic is thin and weak enough you can still pull the jib out to yourself when needed. 

A top 49er sailor suggested it to me aftet a sail together. If the suggestion hadn't come from such a credible source I probably would have disregarded it. 

Of course, sailing solo may change this for you though. 

 

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