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Race Report - Open Series

Sunday saw the next round of the open series. Not much wind so needed to get the big cloth out.

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It was the first time I had someone on the foredeck for me, the hoist was OK but we lost a fair bit of time on the drop. All of the team needs a lot more practice running symmetric spinnakers - it's probably the hardest thing to do right. 

I'm gonna try draw some diagrams to show the challenges and to help me figure out how the ropes need to be arranged for this to go smoothly. 

The old style fabric this spinnaker is made from soaked up the rain like a sponge and it weighed a tonne trying to gather it up when dropping it.  

Anyways, the day was uneventful until the final leg to the finish. We were one boat length behind Synergy (who had the club captain and commodore on board, 2 sailors I respect). They tried to deploy another sail to give them enough speed to stay ahead of us and it all got tangled up. We cruised past. They got the sail flying right and the final run to the finish required some mildly clever manoeuvering to keep them behind. 

The racing rules say as the windward boat - we need to keep clear of them, can't shut the door F1 style. They can't point as close to the wind as us with their bigger sail up. So they can't go over the top of us. They could go below us but would get stuck in our wind shadow. 

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A very satisfying end to the day

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Posted
7 minutes ago, keltik said:

Race Report - Open Series

 

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A very satisfying end to the day

How does the placing work, why is Diversion at 5 points when that time is so much slower?

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Posted
8 minutes ago, Nominal said:

How does the placing work, why is Diversion at 5 points when that time is so much slower?

In this particular style of racing (mark foy), finishing order is what the points are based on.  The boats are given different starting times to account for differences in performance. 

Diversion gets a pretty early start as the boat and crew are not generally that quick.

In the summer racing with Tauranga club, everyone starts at the same time and a correction factor is added to your elapsed time as a handicap. 

Mark foy starts result in the whole fleet being relatively close to each other on the run to the finish and every boat you pass on the water counts for position. 

In regular racing, it's a lot harder to build a mental picture of your position during the race.

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Posted

One argument against Mark Foy racing is that there are only one or two other boats starting at the same time as you so you miss out on the tactical fight to get an advantageous position on the starting line. 

Also you might start the race at 12:00 with no wind and barely pass the start line. Your competitor starts at 12:30 as the wind picks up. Effectively negating your handicap.

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  • 2 weeks later...
Posted

Race report - Open series round 6

It was a strange day. We raced out to Karewa Island but the course didn't really allow for much spinnaker usage (suits me fine).  We climbed through the pack with really good boat speed and were headed for a podium finish - there was no catching Patiko. Then we all reached the harbor entrance....

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We took the red line to keep riding the swell into the entrance, La Vida followed. Synergy and Rimfire took the grey line. Could be more consistent wind out on the grey line? There's definitely an eddy over there in the tidal flow leaving the harbor.

Rascal Tom and Bondi Tram took the orange line to keep out of the current and caned past all of us until the wind dropped to nothing and we all sat there squiggling about.

The boats on the grey line kept a little momentum and made it into the harbor ahead of the pack.

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Not a pleasing finish tbh. The grey line is probably the most reliable way through that entrance on an outgoing tide. But there's a chance for glory on the orange line.

I think in future, the safer bet of the grey line should be standard procedure.

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Posted

Race report - Open series round 7

Shipping strikes again! As we were lining up for the start, a container ship was leaving port. We had run away from the start line a timed distance to make a run back for the start. The container ship passed us as we turned for the line and blocked the wind.  So we started 2 minutes late. 

Partly bad luck, mostly my fault for continuing to put the boat in stupid positions before the start. 

So we set off close hauled up the harbor and slowly made up some ground. 

On the return leg, we closed up on the fleet as we approached the West Otumoetai cardinal mark. Some carnage was going on in front. One race yacht was limping away with shredded sails, another had dropped sails to assist - and the new boat immediately in front of us ran aground (shown in purple).

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This new boat has a 2.9 meter draft so needs more water than us. Now I've rounded this mark many many times and know there's enough water for us even at low tide to sail around it with no worries. So we shot the gap between the aground boat and the mark. 

I saw a meter under the keel on the depth gauge and was chatting to the crew about how weird the whole situation was...WHUMP the boat almost stops. Before anyone's had time to process the situation, we're building speed again and continued on course with over a meter under the keel. 

At the bottom of the course, the whole fleet had compressed and we started tacking into the wind. The extra speed through the tacks and better performance with our harbor racing jib got us past Bondi Tram, then Rimfire, then Synergy, then a Spinnaker launch and we had La Vida in sight. The crew did a great job to keep the boat speed up.

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I haven't seen any pics of the finish but it was a banger. La Vida was chasing Howzat and having some Spinnaker trouble. We were running a gennaker which meant we could turn the boat more across the wind and power it right up. 

1km to the line, La Vida is still having trouble 200m ahead. We're fully powered up at 8.2kts and hit the finish line 2 seconds behind them!

Howzat and Nauti Monster had a time penalty added so we ended up in 2nd place. At the after race prize giving, someone mentioned that west Otumoetai mark has been moved which explains the drama there.

Had some mechanical issues on Thursday but that's going to be a separate post

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Posted

Mechanical issues.

I think it was the mayor Island race earlier in the year. One of the crew turned up late so we had the throttle pinned wide open to get to the start line on time. Only managed 20mins flat out before the overheat alarm sounded. 

So after ignoring the issue and avoiding full power for 6 months, I finally decided to pop the heat exchanger apart for a cleaning. 

First you remove the back water feed plate. Of course the very first bolt snaps. Back when the raw water pump was leaking, it dripped salt water onto this area for quite a while so everything is a bit sad looking.

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The end cap absolutely chocka with salt in the bottom half and the heat exchanger tubes looking pretty scabby.

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Posted

At this point, the service manual says just slide the tube nest out.  Well I reefed on that thing for hours and only got it to move a couple mm.  Seeing a losing battle, bolted it back together with 2 out of 3 bolts and the flanges no longer quite meeting up. 

It held water so did the job for the next race. We just used minimal amounts of engine and low power as a precaution.

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Next weekend, time to remove the whole heat exchanger from the engine to work on it at home. Pretty easy to remove once the alternator was out of the way. 

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Posted

Finally at home I could remove the front water cover plate. This revealed a bit more crud and explained why the core wouldn't budge. The manual doesn't really explain that the other end of the tube nest is sandwiched between 2 Orings which create a very tight fit once the end plate is bolted down and compresses the Orings.

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There's no way to remove this cap with the heat exchanger fitted as there's no clearance between it and the alternator mounting bracket.  With that plate removed and a little bit more prying, the tube nest is removed.

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Posted

Cleaning up corrosion. Cleaning salt deposits and scale. Drilling out the snapped bolt and finding the holes have a stainless thread insert from factory.

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Putting a new thread insert in there, filing off some of the damage done by prying against the alloy housing and reassemble with new paint and seals. 

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Posted

Race report - final 2 handed

Well it pissed down. 

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And it was fucking cold. 

And there wasn't much wind. In these conditions, weight is the deciding factor. So here's Howzat passing us.

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And us sneaking up on La Vida.

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Bondi Tram passed us, then ran aground, then passed us again. 

On the final leg to the finish, Nauti Monster at probably 1500kg took 1st. Howzat at I'm guessing 1800kg took 2nd. Then the race time expired with Bondi Tram (2200kg) and Extract Digit (4400kg) within ten minutes of the finish line. La Vida (5400kg) was a long way behind.

What does this mean for the series results? I don't know. If we managed a podium finish and beat La Vida - 1st place. But since only 2 boats finished, they receive points as normal and everyone else gets points effectively equal to last place. 

I'll have to wait until the prize giving, but my unofficial calculations say there must be 3 boats within 1 point of each other.

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Posted

Throttle cable repair went OK. I haven't worked selling boat parts for 12 years so I couldn't quite remember the right way to measure the cables. I took the old one in to the boat shop and said get me another one the same.

Here's the end that snapped off;

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And here's the new 9 inch shorter cable (guess boat shop person also didn't know how to measure them) fitted to the back of the throttle lever;

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You can kinda see the problem here. Red cable is for the gear shift and the black one is throttle. By the nature of the design, the throttle cable has to flex as you go from full ahead (as shown), rotating 180degrees clockwise to full astern...I guess eventually metal fatigue fucks it. The little brass end that connects the cable to the throttle lever was pretty flogged out so I replaced that too.

Found out the cooling water inlet has a strainer screen. 

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Yeah that needs a clean.

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Much better.

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Posted

Probably a year ago a good customer gave me a painting. So I finally put that up. 

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Got a nice frame made for it to match the rest of the wood. 

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And finally fitted a coolant overflow bottle. It never had one so would occasionally dribble some coolant out and I'd have to investigate if it came from the overflow or if something else was leaking.

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Posted

Had the radio going while I was working,  system voltage was at 12.4v when I started work, dropped to 12.2v after an hour then I glanced at the battery monitor half hour later and it was down to 10.0v

2x6v deep cycle batteries. One was at 6.3v with the other at 3.7v.

Both charged back up to 6.7v pretty quick. I need to decide if the dodgy one is sulphated and maybe recoverable or just plain fucked.

Flushed the toilet a couple times (the on board "sewage treatment" system draws about 25amp) to put some electrical load on the batteries and they behaved. So yeah, no idea. 

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  • 2 weeks later...
  • 2 weeks later...
Posted

Hauled out to replace the prop shaft seals. Jesus fucking Christ what an expensive endeavor that was. 

$450 for the lift out, transport over to a cradle, setting up the cradle, securing the boat, lifting it off the cradle and relaunch. That's reasonable. 

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$115 for the drain plug silicone Oring (91) is extortion. The 2x shaft seals (88) are just metric double lipped viton seals with I'm guessing a stainless tension spring...$195 each is a bit rough. 

The seals seal against a removable collar (93) instead of the shaft, clever design. Of course this collar has some 'uuuge wear grooves in it.

New collar is $600 plus another $125 for the 2 Orings inside it (95).

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So yeah, I just flipped the seals around and reassembled it. We'll see how that goes.

As luck would have it, the old man just replaced the deep cycle batteries in his campervan and one of them is still good. So will chuck that in the boat this weekend and think about the leaking poo pipe I discovered last weekend.

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