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Search took 0.01 seconds. Search: Posts Made By: Dave9111
Forum: Construction, Maintenance & Refit 19-04-2024, 15:33
Replies: 31
Views: 1,883
Posted By Dave9111
Re: Which digital caliper to buy?

Exactly. I have one dial caliper and probably 6 digitals. The digitals are very nice. Batteries are really cheap. But a dozen or so and put a few in each case. My cases have spots for...
Forum: Monohull Sailboats 31-03-2024, 10:58
Replies: 61
Views: 5,416
Posted By Dave9111
Re: Dodger Quotation

Sailrite:
I agree. A very good company who is very customer focused. Years ago I met the family when they had a small shop in downtown Columbia City, IN. I was much younger then. They had a...
Forum: Monohull Sailboats 30-03-2024, 18:38
Replies: 61
Views: 5,416
Posted By Dave9111
Re: Dodger Quotation

I have a number of sewing machines, industrials and home machines. I also sew canvas for my own boats and I sew and sell some canvas cover products. But it is a side business at this point. I have...
Forum: Plumbing Systems and Fixtures 15-01-2024, 06:38
Replies: 39
Views: 3,143
Posted By Dave9111
Re: Best material for water tank

Stainless is easy to weld.
If you can get a clear shot at the crack, use a portable Tig welder with argon and reweld it in the boat. Harbor freight has a 165 amp DC tig welder on sale for $500. ...
Forum: Lithium Power Systems 22-12-2023, 14:05
Replies: 128
Views: 8,214
Posted By Dave9111
Re: LFP+BMS+Ultracapacitors? or (2)(LFP+BMS)?

I actually read most of it.

>One of the things I am trying to do is come up with a simple but reliable system that has some backups, and that is not too expensive or complicated. I don't believe...
Forum: Lithium Power Systems 22-12-2023, 13:44
Replies: 128
Views: 8,214
Posted By Dave9111
Re: LFP+BMS+Ultracapacitors? or (2)(LFP+BMS)?

What did you pay for your supercaps? They sound super expensive.
Forum: Lithium Power Systems 22-12-2023, 13:40
Replies: 128
Views: 8,214
Posted By Dave9111
Re: LFP+BMS+Ultracapacitors? or (2)(LFP+BMS)?

Ha ha....
I have no idea what you said to require an apology to the entire group, but I will accept it as well. :-)

Dave9111. It was an emergency and I got carried away!
Forum: Lithium Power Systems 22-12-2023, 13:34
Replies: 128
Views: 8,214
Posted By Dave9111
Re: LFP+BMS+Ultracapacitors? or (2)(LFP+BMS)?

I am amazed that you have been able to assemble your own batteries and get them past the insurance company. I not doubting what you say, I have just never heard of that before.

I'm not sure it is...
Forum: Lithium Power Systems 22-12-2023, 09:42
Replies: 128
Views: 8,214
Posted By Dave9111
Re: LFP+BMS+Ultracapacitors? or (2)(LFP+BMS)?

This thread has really gone off the rails.

One of the latest suggestions has so many components, its ridiculous. All just waiting to fail.

You guys should really think about what happens when...
Forum: Lithium Power Systems 15-12-2023, 09:57
Replies: 37
Views: 3,665
Posted By Dave9111
Re: BMS DIY

Good luck suing a battery manufacturer that is based in China or a BMS maker that is based in China. That will get you no where.

When you are rolling your own, creating battery packs from raw...
Forum: Lithium Power Systems 15-12-2023, 09:03
Replies: 37
Views: 3,665
Posted By Dave9111
Re: BMS DIY

I think that having a balancer in the BMS is a must. You might not need it right away with high quality cells, but they should be good for 3000+ cycles and eventually as they degrade they will need...
Forum: Lithium Power Systems 15-12-2023, 08:58
Replies: 37
Views: 3,665
Posted By Dave9111
Re: BMS DIY

That isn't a BMS. He doesn't release a lot of details on what that device is doing, but I'm guessing its mostly hype. For $380 I can buy two new 100AH LIFEPO4 batteries.

For a HYBRID system...
Forum: Electrical: Batteries, Generators & Solar 07-12-2023, 05:37
Replies: 34
Views: 5,396
Posted By Dave9111
Re: A cardinal sin???

Dont put lithium in parallel with lead acid. The batteries will fight each other.

You meed a battery isolator to combine la and li batteries.
I have such a setup.
Autohaus sells a $52 isolator...
Forum: Propellers & Drive Systems 02-12-2023, 05:33
Replies: 37
Views: 3,381
Posted By Dave9111
Re: Normal coupler bolts?

Other options:

Grinder
Grinder with a cutting disk.
Right angle die grinder with a 3 inch cutting disk.
Oscillating tool with a carbide cutter. It will take a while but its very controllable...
Forum: Propellers & Drive Systems 01-12-2023, 21:15
Replies: 37
Views: 3,381
Posted By Dave9111
Re: Normal coupler bolts?

You are trying to turn the wrong part. Turn the nut, and hold the allen head capscrew.
Forum: Multihull Sailboats 01-12-2023, 21:05
Replies: 61
Views: 7,824
Posted By Dave9111
Re: An extra-heavy-displacement 11ft long Atlantic Proa for circumnavigation

Might be able to buy a used Steel Buoy and do the same thing. Just add a rudder. Somehow rig a big spinaker to it to drag you through the water.
Just hope the wind is going in the direction you...
Forum: Multihull Sailboats 27-11-2023, 09:10
Replies: 47
Views: 7,078
Posted By Dave9111
Re: Catana 471 vendor hiding survey

Engineer here. Knowing a boats history of repair and use is vital to the value of the boat. The snootiness of some of the folks here shows some real ignorance. Tire kicker?? Come on. The guy was...
Forum: Multihull Sailboats 27-11-2023, 08:43
Replies: 47
Views: 7,078
Posted By Dave9111
Re: Catana 471 vendor hiding survey

Real estate appraiser? Does that make you a marine engineer as well. Nonsense. Surveys can be shown to anyone by the seller. The seller revealed he had two old surveys, offered to show them, then...
Forum: Lithium Power Systems 01-10-2023, 08:32
Replies: 51
Views: 5,997
Posted By Dave9111
Re: Remove the alternator - crazy idea?

Forget about blocking diodes, they can work for adding lead acid batteries to lead acid batteries but not for adding lithium to lead acid.

You need all the Alternator voltage you can get from a...
Forum: Lithium Power Systems 30-09-2023, 14:50
Replies: 51
Views: 5,997
Posted By Dave9111
Re: Remove the alternator - crazy idea?

I would not remove the alternator. As has been said, its a source of power that is already one the boat. Why remove it. Adapt!

LiFePo batteries have some quirks just like Lead Acid. The...
Forum: Construction, Maintenance & Refit 08-08-2023, 07:19
Replies: 63
Views: 6,212
Posted By Dave9111
Re: bottom paint

Originally Posted by sailorboy1:
>People who not have been in an area shouldn't give advise on if a bottom paint might work there. Florida water varies a lot and even a paint that works 1 area may...
Forum: Construction, Maintenance & Refit 04-08-2023, 13:10
Replies: 63
Views: 6,212
Posted By Dave9111
Re: bottom paint

Bluewater Marine 45 percent copper ablative. This is a solvent paint.

On Lake Erie with Zebra Mussels.

I dont paint the boat every year. Pressure wash, touchup the paint where its thin and...
Forum: Construction, Maintenance & Refit 21-07-2023, 07:21
Replies: 120
Views: 16,999
Posted By Dave9111
Re: Tools that changed your life

Oscillating multitool. Its a total no-brainer purchase if you need to actually make changes. I last used it to cut off two bronze through hulls that had to be replaced inside a closet on a 33 ft...
Forum: Our Community 05-06-2023, 09:20
Replies: 77
Views: 5,829
Posted By Dave9111
Re: Retirement - what does it mean to you?

Retirement to me is being able to do what I want to do and not have everything driven by money decisions. A financial advisor asked me recently how long I planned on "working" and I said 3-4 more...
Forum: Construction, Maintenance & Refit 05-06-2023, 08:41
Replies: 26
Views: 2,956
Posted By Dave9111
Re: Stanchion Fiberglass Repair

So this is both a suggestion and a question. Having never worked with Vinylester before.

If this was polyester/fiberglass and this break had recently occurred so the surfaces were relatively...
Showing results 1 to 25 of 257
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