Search found 73 matches

by SL Ethel
Tue Apr 09, 2019 2:45 pm
Forum: Technical - Engines and Boilers
Topic: Desuperheater question
Replies: 15
Views: 490

Re: Desuperheater question

Thanks for the input, Fred. I think the conclusion, then, is that I'm likely just going to burn up an oversized superheater. This boat is supposed to be a relaxed cruising boat, so I don't want to set it up such that it needs constant fiddling just to not self-destruct. I think it makes sense just t...
by SL Ethel
Mon Apr 08, 2019 3:09 pm
Forum: Technical - Engines and Boilers
Topic: Desuperheater question
Replies: 15
Views: 490

Re: Desuperheater question

Thanks for the input. The reason I was thinking about a superheater rather than a feed water heater in the firebox is for efficiency's sake - I wanted to preserve the counter-flow heat exchange of having the hottest heat transfer surface (the superheater element) next to the fire, followed by the ge...
by SL Ethel
Fri Apr 05, 2019 6:25 pm
Forum: Technical - Engines and Boilers
Topic: Desuperheater question
Replies: 15
Views: 490

Desuperheater question

I am putting together a wood-fired ofeldt boiler, using a round firebox with castable refractory lining I already have. The only downside to this firebox in its last incarnation was that the refractory stored a LOT of heat. This was very noticeable even with the 18" diameter firebox under a pressure...
by SL Ethel
Wed Mar 13, 2019 6:40 pm
Forum: Technical - Engines and Boilers
Topic: Favourite cylinder lubrication
Replies: 14
Views: 927

Re: Favourite cylinder lubrication

Long story short, it works great!... if you can find something to suspend it in that won't evaporate too quickly Well, there goes my graphite-dissolved-in-acetone plan! In seriousness, than you for the feedback on the graphite. Based on your description, I think I will definitely give it a try. It ...
by SL Ethel
Thu Mar 07, 2019 6:14 pm
Forum: Technical - Engines and Boilers
Topic: Favourite cylinder lubrication
Replies: 14
Views: 927

Re: Favourite cylinder lubrication

If I may circle back to the first post in the thread... what prompts the decision to start using oil instead of graphite? I was considering doing just the opposite switch as I convert to a condensing system. How did you introduce the graphite, and why was it not satisfactory? Thanks in advance, Scott
by SL Ethel
Mon Apr 30, 2018 4:24 pm
Forum: Technical - non Engines and Boilers
Topic: Jay R. Benford 25ft Fantail Launch
Replies: 19
Views: 1810

Re: Jay R. Benford 25ft Fantail Launch

I've never sailed one, but I believe I do have sketches with small scale lines for his 34' and 38' fantails. They were published in a book of his designs that I purchased 20 years ago in Vancouver. I could scan and email that if anyone needs. They certainly looked like lovely little boats. Cheers, S...
by SL Ethel
Tue Feb 20, 2018 3:16 pm
Forum: Technical - Engines and Boilers
Topic: Steam Thruster?
Replies: 61
Views: 8526

Re: Steam Thruster?

I second the trolling motor idea. You can still use steam for the battery charging, and so be a 100% steam powered vessel (after all, the Normandie had a steam electric propulsion system, so you are in very good historical company there). My thought is that even on a small boat, if a thruster is to ...
by SL Ethel
Thu Feb 15, 2018 6:46 pm
Forum: Anoraks Corner
Topic: Seeking Advice on Milling Machine
Replies: 14
Views: 3509

Re: Seeking Advice on Milling Machine

Mike, thanks for the reminder to check the thread form. 1/4-20 threaded rod felt right threading into the machine, but I don't know if whitworth might also fit. I'll double check. I have most of the original gib screws, so I should be able to be sure fairly easily.

Thanks!

Scott
by SL Ethel
Wed Feb 14, 2018 7:10 pm
Forum: Anoraks Corner
Topic: Seeking Advice on Milling Machine
Replies: 14
Views: 3509

Re: Seeking Advice on Milling Machine

Quote: "And these screws are M6-1.25." 1.25 pitch lead equals .0492" 20 threads per inch equals .050" pitch lead. 6mm equals .236" 1/4" equals .250" I think you have 1/4-20 there. Try a 1/4-20 bottoming tap in the hole. -Ron If there was an egg-on-my-face emogi, I think I'd have to use it now. Ron,...
by SL Ethel
Wed Feb 14, 2018 5:18 pm
Forum: Anoraks Corner
Topic: Seeking Advice on Milling Machine
Replies: 14
Views: 3509

Re: Seeking Advice on Milling Machine

I'll double check the threads today. Everything else on the machine is metric, so I didn't think to try 1/4-20. I checked one of the original gib screws against M6 bolts (seemed to match for diameter) and M8-1.25 bolts (matched for pitch) at the hardware store, though not with a micrometer. This mac...