Girl with patreon account goes sailing in hot place

OPAL

Member
271
243
I’m struggling with that now, thinking through solar panels.

And then I think of Jeanne Socrates, who made several epic solo nonstop RTW attempts (before finally succeeding a few years ago) - just look at her boat! That arch! I thought she had no solar panels on board - that they were onboard in earlier pics, but removed for the Southern Ocean voyages...but apparently not.

View attachment 539875
Things where a bit battered around the arch area when Jeanne came in the last time round.

Jeanne Socrates.JPG
 

thedooger

New member
Beautiful boat. I trust you know about the NBJS youtube channel - Erik Aanderaa's got a Contessa 35 and does great work with it.
I do - I have connected with him a few times and he willingly shares good info on the boat. His is a wheel setup which was interesting as most ive seen are tiller driven
 

vibroman

Super Anarchist
Dyneema goes slack at low temps
Really?? is it dyneema elongating or Aluminum shrinking?
Can't be arsed to figure out if their mast is aluminum or how tall but I just spitballed some numbers and a 60' al mast will shrink approx 0.4" going from 80 F to 30 F. If dyneema does not shrink that much (like most carbon) that may be their problem. Expansion rates for SS is around 3/4 that of aluminum so difference not as apparent with steel.
 

jvodan

New member
19
10
Sydney
Dyneema lengthens in the cold, thru some chemical magic. According to video
Really?? is it dyneema elongating or Aluminum shrinking?
Can't be arsed to figure out if their mast is aluminum or how tall but I just spitballed some numbers and a 60' al mast will shrink approx 0.4" going from 80 F to 30 F. If dyneema does not shrink that much (like most carbon) that may be their problem. Expansion rates for SS is around 3/4 that of aluminum so difference not as apparent with steel.

According to http://dynamicarope.com/wp-content/uploads/2015/04/Physical-Properties-of-Dyneema-Fibre.pdf
-.0121 mm per K (C')

Aluminium (6063) is +0.0234mm per K (C') (differs for different alloys but not substaintially)

So it's a double hit in the cold the mast gets shorter and the rigging gets longer. In hot weather the opposite happens, the mast gets longer and the rigging contracts.

At a wild guess I would save Van der Waals forces diminish with temperature, resulting in the polymer strands being less bound to each other
 

Israel Hands

Super Anarchist
3,196
1,883
coastal NC
The most profound point that I remember our thermodynamics professor making- If the solid state of water was, as most other things, more dense than its liquid form, then none of us would be here. Because if ice sank, the oceans would have frozen solid and stayed frozen.
 

Voiled

Anarchist
509
376
Threads like these should get more popular now:

 

Diarmuid

Super Anarchist
3,757
1,827
Laramie, WY, USA
Experience. UHMWPE has an inverse coefficient of expansion
Yeah -- the guy is a pro rigger. Many rubber/kevlar V belts also shorten as they heat up. Strange, but true. And usually counteracted by tensile forces.

ETA: For a basic demonstration of the weird properties of some polymers, just think about heat shrink tubing. Apply heat, it reduces size by 80%.

I've watched quite a few of that couple's videos, such as their discussion of feathering/furling propellers. There's usually good information in them, tho the production quality is casual and they don't glam up the lifestyle. It rains in the tropics -- check. A line can chafe without it being "OMG!! We almost DIED!"
 
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low bum

Member
325
236
Tennessee
I know he's supposedly a rigger, what do I know. He's also a dentist. But his rig looks like absolute shit. I've followed his rigging videos for a while now and I'm just shocked at the garbage he sails. Open thimbles nearly falling out of spliced eyes, thimbles point-loaded on turnbuckle pins, etc. etc.

Yes, dyneema gets slack in cold. But his turnbuckles are already screwed in as short as they'll go. He should take them loose about half way, then re-tension, so that he can adjust in/out for temperature changes. As it is he lost a sailing day because of what you see there. He uses dead eyes (in thimbles, natch) so they can be tightened relatively easily. Lots of places are cold at night but hot in the daytime.

This video chilled me on dyneema for my rerig. I'm going with stainless.
 

Israel Hands

Super Anarchist
3,196
1,883
coastal NC
This couple from Quebec are trying to get subscribers the old-fashioned way



Reminder of the old "Je m'apelle Guy" line
I believe that Club Super-Sex is an appropriate place for my wife and me to celebrate our anniversaire/
What the hell, she goes on at ten anyway
 

Jud - s/v Sputnik

Super Anarchist
6,565
1,909
Canada
I know he's supposedly a rigger, what do I know. He's also a dentist. But his rig looks like absolute shit. I've followed his rigging videos for a while now and I'm just shocked at the garbage he sails. Open thimbles nearly falling out of spliced eyes, thimbles point-loaded on turnbuckle pins, etc. etc.

Yes, dyneema gets slack in cold. But his turnbuckles are already screwed in as short as they'll go. He should take them loose about half way, then re-tension, so that he can adjust in/out for temperature changes. As it is he lost a sailing day because of what you see there. He uses dead eyes (in thimbles, natch) so they can be tightened relatively easily. Lots of places are cold at night but hot in the daytime.

This video chilled me on dyneema for my rerig. I'm going with stainless.
@estarzinger (where is he these days, anyway?) earlier pointed out what might possibly be called a “fatal flaw” in one of his Dyneema splicing vids, which I had a look at when I was starting to learn a bit about it. (And it’s for eye splices for my jacklines, where something done wrong could in fact be fatal.) I think it’s in the “Dyneema School” thread. Using a lock splice for making an eye vs. a bury splice. His (dentist/rigger) video gave bad information, especially as it relates to strength, as EStatzinger pointed out - which, as a “public service” (especially for a novice!) he felt compelled to point out. (And I’ve since bought Samson’s official guide to splicing their ropes, which they have accompanying vids for too.).

So - based on that, I might view his rigging vids with more skepticism...
 

chester

Super Anarchist
6,650
1,606
This couple from Quebec are trying to get subscribers the old-fashioned way



Reminder of the old "Je m'apelle Guy" line
I believe that Club Super-Sex is an appropriate place for my wife and me to celebrate our anniversaire/
What the hell, she goes on at ten anyway

she certainly has the assets to make this happen.
that's the french flag flying not fleur de lys, did they say they were from ka'bec?
 


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