Search found 261 matches

by Maltelec
Tue Nov 15, 2016 11:32 pm
Forum: Technical - non Engines and Boilers
Topic: Expanding property of Compressed Air
Replies: 21
Views: 16030

Re: Expanding property of Compressed Air

Dry air is a pretty much ideal gas. Ignoring any heat change, which makes minimal difference, Volume / Pressure = Volume / Pressure. That is a 10 Litre tank at 100psi if expanded to 100 Litres will give you 10psi. Hence why air pressure is a useless energy transfer medium. The real power of steam is...
by Maltelec
Tue Nov 15, 2016 11:18 pm
Forum: Technical - Engines and Boilers
Topic: It's DONE!!
Replies: 12
Views: 9079

Re: It's DONE!!

Ultra Violet light can also help epoxy to set. Just leave it out in bright sunlight (even if it is cold).
by Maltelec
Tue Nov 15, 2016 11:16 pm
Forum: General Steamboat stuff
Topic: How can the forum be improved?
Replies: 31
Views: 38346

Re: How can the forum be improved?

Only the liquid ignited without an igntion source causes me concern. All the other items; 'coal' 'wood' 'electric' 'gasoil' 'car' 'train' 'computer' 'telephone' 'cell phone' 'hard drive' all require an ignition source to ignight and burn. In the case of some cell phones, the ignition source is built...
by Maltelec
Fri Oct 28, 2016 11:09 pm
Forum: General Steamboat stuff
Topic: Attn: Moderator!!!
Replies: 4
Views: 4386

Re: Attn: Moderator!!!

I must have deleted the user already as I can't find them on the system.
by Maltelec
Mon Mar 28, 2016 10:18 pm
Forum: Technical - non Engines and Boilers
Topic: Whistle dB reduction (Snubber)
Replies: 8
Views: 5303

Re: Whistle dB reduction (Snubber)

The volume of a whistle is related to the length of the flute.

I.e. a whistle with a flute 360 Degrees round would in theory be twice as loud as a whistle with the flute only on the front half.
by Maltelec
Tue Jan 05, 2016 10:54 pm
Forum: Technical - Engines and Boilers
Topic: Sea Lion engine
Replies: 13
Views: 14226

Re: Sea Lion engine

Since vacuum is critical for exhaust scavenging and keeping engine compression pressures reasonable, a steam-powered eductor will be used to purge the condenser and generate vacuum for starting. I had thought about this for my engine design. The boat Eplenor has an engine similar to your design, an...
by Maltelec
Mon Jan 04, 2016 11:23 pm
Forum: Technical - Engines and Boilers
Topic: Sea Lion engine
Replies: 13
Views: 14226

Re: Sea Lion engine

Hi Barts I have designed an engine a lot like this, but also quite different. I would highly recommend you look into using balanced poppet valves. They are not difficult to make and they will take a lot of stress out of the valve gear. Just think if you have 2 Square Inches of valve surface, and you...
by Maltelec
Mon Jan 04, 2016 11:04 pm
Forum: Welcome
Topic: View active topics - broken?
Replies: 2
Views: 6434

Re: View active topics - broken?

Apparently there is a bug in the system which disables the setting.

It is now enabled.
by Maltelec
Mon Jan 04, 2016 10:45 pm
Forum: General Steamboat stuff
Topic: How can the forum be improved?
Replies: 31
Views: 38346

Re: How can the forum be improved?

A Forum with a fixed header causes issues with different types of screen shapes and is generally not recommended.

I have given into peer pressure (must be getting as old as you lot) and have removed the Diesel word censoring. Just be warned that uses who use Diesel inappropriately will be banned.
by Maltelec
Mon Jan 04, 2016 10:41 pm
Forum: General Steamboat stuff
Topic: Merry Christmas
Replies: 25
Views: 23628

Re: Merry Christmas

Problem fixed.

Strangely enough the fault had been there for several years.