Search found 881 matches

by barts
Tue Oct 22, 2019 1:53 am
Forum: Technical - non Engines and Boilers
Topic: Depth Sounders?
Replies: 7
Views: 640

Re: Depth Sounders?

I wouldn't get too worried. Otter's prop has been 'hanging low' w/o even a preceding skeg for the almost 30 years she's been steaming. Yes, I've grounded the prop on a rock a time or two, but nothing really bad that a bit of light filing didn't clean up. I do stand and slow down when steaming in sha...
by barts
Sun Oct 13, 2019 4:17 pm
Forum: Technical - Engines and Boilers
Topic: Lune Valley Burner
Replies: 1
Views: 181

Re: Lune Valley Burner

I think that valve mechanism is designed to control fuel flow while maintaining a relatively constant jet velocity, and providing a needle type orifice that can be cleared by cycling the valve. The construction isn't clear, but I'd guess the vertical needle has a slot that is engaged by a fork threa...
by barts
Wed Aug 21, 2019 5:51 am
Forum: Technical - non Engines and Boilers
Topic: Electrical system for boat
Replies: 24
Views: 1847

Re: Electrical system for boat

To make boiler nipples removable, use neverseize. There's one w/ PFTE specifically called out for steam piping. Teflon tape works as well, but the goop is better. RectorSeal #5 is similar - I've had no troubles removing boiler nipples after 10 years. To prevent corrosion, paint fittings with moistur...
by barts
Tue Aug 20, 2019 6:45 am
Forum: Technical - non Engines and Boilers
Topic: Electrical system for boat
Replies: 24
Views: 1847

Re: Electrical system for boat

If you're interested in more of a period piece, there are various articles on the net about making slow speed generators for wind turbine use. These could support direct drive from our steam engines; some skill w/ electronics would be needed to properly regulate the output, but this could look very ...
by barts
Sun Aug 18, 2019 1:54 am
Forum: Technical - non Engines and Boilers
Topic: Electrical system for boat
Replies: 24
Views: 1847

Re: Electrical system for boat

If you have a rigid canopy, solar panels make a lot of sense if your climate isn't too sunless. A couple of 100w panels and you're set. Large boats fit alternators, but I've seen those only on 35-40 footers. Most small boats just pack enough battery to last a weekend. Rainbow, our 26' ex-Navy whaleb...
by barts
Thu Jun 27, 2019 5:49 am
Forum: Technical - Engines and Boilers
Topic: Burning corn as fuel?
Replies: 8
Views: 692

Re: Burning corn as fuel?

It's certainly possible, of course. However, the cost of the fuel (unless you've got a pretty big boat) is a tiny part of the expenses of maintaining a boat, and it's not trivial getting pellet fuels to burn at the desired rate, esp. w/o forced draft. Rats would pose a problem - a ship's cat might b...
by barts
Wed Jun 26, 2019 1:55 am
Forum: Technical - Engines and Boilers
Topic: Gas-fired LaMont boiler
Replies: 12
Views: 1115

Re: Gas-fired LaMont boiler

When I wound the 1/2" (~13 mm) tubing for Otter's boiler, I filled the tubes w/ sand. For very small tubes, you might want to consider Cerro bend or other very low melting point (below 100 C) metal alloys to prevent tube collapse.

- Bart
by barts
Sun Jun 23, 2019 10:02 pm
Forum: Technical - Engines and Boilers
Topic: Oil burner consumption
Replies: 30
Views: 2036

Re: Oil burner consumption

If you know how many lbs/hour of wood your plant consumes, you can easily calculate estimated oil consumption. https://mha-net.org/docs/v8n2/docs/WDBASICS.pdf Assuming about 7000 btu/lb of air dried wood and 140k btu/gallon of diesel and 7 lbs of diesel/gallon, Estimated burn of 40 lbs of wood/hour ...
by barts
Sun Jun 23, 2019 9:49 pm
Forum: Technical - Engines and Boilers
Topic: Cladding Problem - Need Advice
Replies: 6
Views: 685

Re: Cladding Problem - Need Advice

The exhaust steam temperature is going to be determined by the number of expansions of the steam. If your engine was running at 100% cut-off, the exhaust steam would be at a temperature determined by the constant-heat expansion (same as a throttling valve) of the input steam. 150 psi saturated steam...
by barts
Tue Jun 18, 2019 1:43 pm
Forum: Technical - Engines and Boilers
Topic: Best (Easiest) method to check dissolved oxygen levels in make up water.
Replies: 2
Views: 337

Re: Best (Easiest) method to check dissolved oxygen levels in make up water.

Hi Captain Mack - I've never seen anyone do this on our small steamboat boilers, but you've got one larger than most and it's used more than most. I'd probably go with an meter, but there are regents as well that one can use to do a visual color comparison, as well as a traditional titration procedu...