Search found 1750 matches

by Lopez Mike
Sun Jan 12, 2020 3:02 pm
Forum: General Steamboat stuff
Topic: Steamboat SOLD
Replies: 1
Views: 246

Re: Steamboat SOLD

Ah, yes. That works out to less than $100/inch! Very good.

On a less facetious note, there is still a 32 foot hull with a new boiler and a very nice engine sitting in Olympia, WA. It's been parked on its shipping pallet for over a year. I suspect that the first 10K would walk away with it.
by Lopez Mike
Sat Jan 11, 2020 1:32 am
Forum: Technical - Engines and Boilers
Topic: Re-using oil
Replies: 4
Views: 554

Re: Re-using oil

O.K., Wes. Tell Kelly how big the engine is.
by Lopez Mike
Fri Jan 10, 2020 12:10 pm
Forum: Technical - Engines and Boilers
Topic: Re-using oil
Replies: 4
Views: 554

Re: Re-using oil

Unless there is some bearing failure in progress, the only thing getting mixed into your used oil should be water. And I can't think of any reason that some water mixed in with the oil would be a problem. If you really want to reuse your oil then just letting it settle ought to do the trick. And may...
by Lopez Mike
Mon Jan 06, 2020 4:17 pm
Forum: Technical - Engines and Boilers
Topic: VFT tube leak
Replies: 54
Views: 1942

Re: VFT tube leak

Just to make it more difficult here, I live on an island and all three of the launching locations have the associated dock far away enough from the ramp that I have to have steam up before launching. Ridiculous!!
by Lopez Mike
Sun Jan 05, 2020 5:48 am
Forum: Technical - Engines and Boilers
Topic: VFT tube leak
Replies: 54
Views: 1942

Re: VFT tube leak

Ah! Now maybe I understand why my VFT pressure rise is so non-linear. I sort of understood why there was a delay when the water temperature reached 100C. I forget the terms but I know it takes a lot of energy pumped in the water to get past the atmospheric pressure point. What I didn't understand wa...
by Lopez Mike
Sun Jan 05, 2020 12:00 am
Forum: Technical - Engines and Boilers
Topic: VFT tube leak
Replies: 54
Views: 1942

Re: VFT tube leak

Interesting diagram. No gradients in the bulk of the fluids? Hmm. I wonder if they meant for both sides to be actual fluids or was it a generic term which includes gasses? It occurs to me that the 'film' thicknesses and conductivities would be different for gasses and liquids and both film thickness...
by Lopez Mike
Sat Jan 04, 2020 3:27 pm
Forum: Technical - Engines and Boilers
Topic: VFT tube leak
Replies: 54
Views: 1942

Re: VFT tube leak

I'm amazed. Unlike many situations where the loads build up exponentially as with a beam, a tube sheet on a VFT only has local loads that are resolved in tension of the tubes. Just a bunch of hollow stay bolts in effect. Unless the rolling and welding cannot stand loads of a couple of hundred pounds...
by Lopez Mike
Sat Jan 04, 2020 12:26 am
Forum: Technical - non Engines and Boilers
Topic: Electrical system for boat
Replies: 35
Views: 3662

Re: Electrical system for boat

I would consider carefully exactly why you are going down this path. As Fred says, electrical lights are a good thing but with modern L.E.D.s it's hard to justify an electrical system. Plain old alkaline batteries are available everywhere. You can go crazy with search lights, nav lights and area ill...
by Lopez Mike
Fri Jan 03, 2020 3:41 pm
Forum: Technical - non Engines and Boilers
Topic: Electrical system for boat
Replies: 35
Views: 3662

Re: Electrical system for boat

Consider a radio controlled vehicle servo. They are relatively inexpensive, available in a wide range of sizes and torque ratings and easily interfaced with a small dedicated micro controller. This has already been done and is mostly a 'turnkey' solution. I've done so with a little controller called...
by Lopez Mike
Thu Jan 02, 2020 3:17 pm
Forum: Rally Reports
Topic: Steam Launches at Beaulieu 1974
Replies: 2
Views: 669

Re: Steam Launches at Beaulieu 1974

A wonderful break for me on a cold Winter morning.

Thanks