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Search took 0.07 seconds. Search: Posts Made By: Stumble
Forum: Atlantic & the Caribbean 16-11-2021, 15:43
Replies: 1
Views: 807
Posted By Stumble
Fuel availability in Cuba

I am planning a trip that is going to transit Cuba and am curious if anyone has a source for where on Cuba fuel is available?
Forum: Navigation 10-03-2018, 17:00
Replies: 8
Views: 2,782
Posted By Stumble
Re: Lake Ponchetrain from the Mississippi River

I would not come up the river unless you are absolutely positive you can't make it under the bridge. At a minimum you probably will have to wait a few months before it is even safe to do so. The...
Forum: Plumbing Systems and Fixtures 04-03-2018, 13:20
Replies: 68
Views: 7,871
Posted By Stumble
Re: Proposed human cycle powered watermaker

Fundamentally the problem with a pedal powered water maker is that it is a water maker. If you are going to have a pedal power anything you might as well just use it to charge the batteries, then...
Forum: General Sailing Forum 04-03-2018, 11:58
Replies: 4
Views: 1,099
Posted By Stumble
Re: Bimini frame blocks winch handle

Sadly it is all to common. Take a look at shorter winch handles. Generally you can find 8,10, and 12" versions. So it depends on what size is already there.
Forum: Monohull Sailboats 03-03-2018, 16:52
Replies: 13
Views: 1,375
Posted By Stumble
Re: Mixing Metals

I couldn't even begin to guess... I know the deck itself is made from an armored steel, and that they can't use aluminum because in the event of a jet fuel fire (~1000C) the aluminum could melt (at...
Forum: Monohull Sailboats 03-03-2018, 14:40
Replies: 13
Views: 1,375
Posted By Stumble
Re: Mixing Metals

This is pretty far outside my wheel house, but based on the tests I have read, explosion forming Al-Ti will galvanically corrode at the boundary. My guess is the US Navy simply doesn't care about the...
Forum: Plumbing Systems and Fixtures 03-03-2018, 14:31
Replies: 56
Views: 8,421
Posted By Stumble
Re: Using low-voltage water heating elements as a diversion load.

If you batteries are already full, which is the only time you need a diversion load, having more batteries would actually make the problem worse not better.

Note this is not an argument for...
Forum: General Sailing Forum 03-03-2018, 14:18
Replies: 228
Views: 73,983
Posted By Stumble
Re: Prepping?

They are not really effected.

All of the studies from credible sources on the effect of EPM's that I am aware of basically indicate that absolutely nothing will happen to cars. There is a...
Forum: Monohull Sailboats 03-03-2018, 13:47
Replies: 13
Views: 1,375
Posted By Stumble
Re: Mixing Metals

So long as they are electrically isolated there isn't much of an issue. And this is a pretty easy thing to check. Just take a multi-meter and check for continuity between the hull and the bridge in a...
Forum: Marine Electronics 02-03-2018, 19:48
Replies: 16
Views: 7,110
Posted By Stumble
Re: On no! The holes too big!

Yes I have used it quite a lot. It is fine in compression if the load is spread well but it has some real issues. First it cold flows, under fastener pressure it will flow away from clamping...
Forum: Marine Electronics 02-03-2018, 14:10
Replies: 16
Views: 7,110
Posted By Stumble
Re: On no! The holes too big!

FWIW I would recommend against starboard. In this application it will probably work, but over time it will start to sag and flex. It really doesn't have any structural strength and between the heat...
Forum: Deck hardware: Rigging, Sails & Hoisting 01-03-2018, 19:24
Replies: 2
Views: 911
Posted By Stumble
Re: Alpha Ropes

I love their stuff. It is hard to find in the US, but worth the time and price normally to do so. Absolutely a competitor with NER and Samson.
Forum: Seamanship & Boat Handling 23-02-2018, 15:39
Replies: 25
Views: 11,056
Posted By Stumble
Re: Poling out Code 0 for DDW?

The problem is no one sail will meet all of those goals. For upwind light air a CZ is ideal, it is after all what it was designed for. But trying to carry one DDW is just not going to be ideal, any...
Forum: Monohull Sailboats 23-02-2018, 15:31
Replies: 6
Views: 986
Posted By Stumble
Re: Surveyor in the Mobile, AL area

Lee is awesome, and if you need any work done Donnie Brennan in Mobile is the best boatwright in the US.
Forum: General Sailing Forum 21-02-2018, 15:35
Replies: 228
Views: 73,983
Posted By Stumble
Re: Prepping?

No one has access to a wide scale EMP other than nuclear powers because the only way we know how to make a large EMP is with nuclear weapons. Yes targeted EMP weapons exist, but they act on buildings...
Forum: General Sailing Forum 20-02-2018, 19:45
Replies: 228
Views: 73,983
Posted By Stumble
Re: Prepping?

EMP's aren't really that big a deal for anyone. Basically to be effected by one you have to be close by a space burst nuclear weapon, at which point wether your electronics are working seems to be...
Forum: General Sailing Forum 20-02-2018, 17:22
Replies: 228
Views: 73,983
Posted By Stumble
Re: Prepping?

So for those of you who are worried about EMP's... Are you aware that the only way we know to generate one is a space burst nuclear weapon? And that testing has been inconclusive, but best guess is...
Forum: Deck hardware: Rigging, Sails & Hoisting 18-02-2018, 21:47
Replies: 1
Views: 1,615
Posted By Stumble
Re: Main halyard - 2:1 & single vs double braid?

Double braid dyneema and single braid are not swappable in most applications. Unlike polyester lines where the cover carries a good bit of the load on double braid dyneema the cover is just there for...
Forum: Multihull Sailboats 15-02-2018, 14:25
Replies: 2,165
Views: 305,843
Posted By Stumble
Re: Oceanvolt Hybrid Motor

One major problem with fuel cells is that the catalyst is only good for some numbers hours. I can't remember specifically for the EFOY but if I remember it basically doubled the cost/kwh compared to...
Forum: Multihull Sailboats 14-02-2018, 20:15
Replies: 2,165
Views: 305,843
Posted By Stumble
Re: Oceanvolt Hybrid Motor

Paul,

Nice summary but you made one major mistake on energy density.

Diesel has a energy density of 48MJ/kg, rechargeable Lithium Ion batteries have a maximum energy density of about .5MJ/kg....
Forum: Multihull Sailboats 14-02-2018, 20:08
Replies: 313
Views: 40,568
Posted By Stumble
Re: Upwind performance of condomarans

Any one of thousands of islands. Just sail on the leeward side of it.
Forum: Multihull Sailboats 14-02-2018, 20:05
Replies: 313
Views: 40,568
Posted By Stumble
Re: Upwind performance of condomarans

Yes. Polars assume lightship weight, a clean bottom and running gear, and flat water, with no doodads added to the hull that would effect wind resistance. Now to hit the polars, or beat them, you...
Forum: Multihull Sailboats 14-02-2018, 15:44
Replies: 2,165
Views: 305,843
Posted By Stumble
Re: Oceanvolt Hybrid Motor

The problem is you are not comparing apples to apples but apples to airplanes. If you need 40kw at each prop then the electric motors must be twin 40kw motors, and the generator has to be rated at...
Forum: Deck hardware: Rigging, Sails & Hoisting 14-02-2018, 15:30
Replies: 31
Views: 15,540
Posted By Stumble
Re: carbon mast - experiences anybody?

Bilgewater,

A lightning strike is not always a death sentence to a carbon rig, but you absolutely do need a lightning conductor down the rig, particularly if you are using composite shrouds.
...
Forum: Product or Service Reviews & Evaluations 13-02-2018, 18:41
Replies: 5
Views: 7,939
Posted By Stumble
Re: Best Foul Weather Gear for the money

If money is no object I would go with Zhik. If you want to save a couple of bucks then there are some other options, but the Zhik stuff really is better. The downside is they are very proud of their...
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