Electrical system for boat

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fredrosse
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Re: Electrical system for boat

Post by fredrosse » Fri Aug 23, 2019 2:53 am

"Maybe it's time to head for Harbor Freight and buy a bore scope."

I bought the HF borescope, $69, not bad, it works OK, but only 240 pixels. My computer savvy daughter pointed out that one can get a 720 pixel borescope that is only 7mm in diameter, has a ring of LED lights around the camera, with user adjustment, and it plugs into a USB port, so you get the picture on a typical laptop computer, or even a phone. The cost, $12

I remember when borescopes came out years ago, cost thousands of USD
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DetroiTug
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Re: Electrical system for boat

Post by DetroiTug » Fri Aug 23, 2019 2:04 pm

It's important to know if corrosion is happening, but it is also important to know what effect it is having. An Ultrasound thickness tester which can be had for a little over a hundred dollars works well for this, they are very accurate to within .001" and will show if there is any thinning in areas of corrosion. A rusty area may or may not be an area of concern, but the ultrasound tester is the only way to know for sure. I checked my boiler all over in various spots and it measured .320 +/- .002". It will only measure the metal and it will do it accurately even if there is rust on the surface. Each material type has a specific frequency setting and if the material changes at some point in the cross section, it simply won't measure it and will only measure what it is set for.

A glycerin coupling agent is dabbed on a spot and then the probe is coupled to the surface and it reads the thickness right out in decimal digits.

-Ron
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Lopez Mike
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Re: Electrical system for boat

Post by Lopez Mike » Fri Aug 23, 2019 4:51 pm

I have a thickness tester. No problems anywhere I can reach on my boiler.

I'm more concerned with poor heat transfer. Probably I'll just wash it out with TSP and roll it around like a beer keg on the shop floor to make sure there isn't any serious buildup at the bottom of the water leg.
Last edited by Lopez Mike on Mon Aug 26, 2019 5:48 pm, edited 1 time in total.
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DetroiTug
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Re: Electrical system for boat

Post by DetroiTug » Mon Aug 26, 2019 1:12 pm

Quote: "To make boiler nipples removable, use neverseize."

I've had good service out of neverseize as well, what I swear by for sealing and non binding of threaded components is "Jomar Green Stuff" thread sealant. I've been using that for many years now and I have never had anything steam related that was too difficult to remove years later. I worked for a gas company about 30 years ago and that is all they would allow us to use. Apparently their engineers had tested various products and it was the best they could find.

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Lopez Mike
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Re: Electrical system for boat

Post by Lopez Mike » Mon Aug 26, 2019 10:17 pm

Ordered a can off of EBay. Thanks for the tip.
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