Search found 281 matches

by steamboatjack
Tue Apr 03, 2018 10:01 am
Forum: Technical - Engines and Boilers
Topic: engine castings
Replies: 10
Views: 9482

Re: engine castings

b2017 castings.jpg
b2017 castings.jpg (87.61 KiB) Viewed 7707 times
by steamboatjack
Tue Apr 03, 2018 8:55 am
Forum: Technical - Engines and Boilers
Topic: Unusual Valve Timing?
Replies: 12
Views: 10292

Re: Unusual Valve Timing?

Gents, First let me recommend that the standard conventions are used to avoid confusion as there are a lot of people unfamiliar with marine engineering terms. “lead” should be considered as the amount the valve is open to steam at TDC/BDC and should be stated as such in inches or mm. NOT in degrees ...
by steamboatjack
Mon Apr 02, 2018 7:59 am
Forum: Technical - Engines and Boilers
Topic: engine castings
Replies: 10
Views: 9482

Re: engine castings

Image
by steamboatjack
Mon Apr 02, 2018 7:58 am
Forum: Technical - Engines and Boilers
Topic: engine castings
Replies: 10
Views: 9482

Re: engine castings

sorry forgot how to do pics 9again)
jack
by steamboatjack
Mon Apr 02, 2018 7:52 am
Forum: Technical - Engines and Boilers
Topic: engine castings
Replies: 10
Views: 9482

engine castings

A set of launch engine castings for about three engines was sold by cheffin's auctions (Cambridge UK) last year for peanuts.
Does anyone out there know where these are now???? see photo.
Regards Jack
http://i223.photobucket.com/albums/dd18 ... 1522569064
by steamboatjack
Tue Mar 27, 2018 6:15 am
Forum: Technical - Engines and Boilers
Topic: Resources/Information for Crank Lubrication?
Replies: 118
Views: 71547

Re: Resources/Information for Crank Lubrication?

The vast majority of marine steam engines (all sizes) were built with Stephenson gear, I believe this was because it was well known to the designers of the time and well understood by operators and was easy to produce. the various radial type gears were largely the product of locomotive design which...
by steamboatjack
Mon Mar 26, 2018 7:31 am
Forum: Technical - Engines and Boilers
Topic: Resources/Information for Crank Lubrication?
Replies: 118
Views: 71547

Re: Resources/Information for Crank Lubrication?

Mr gondoliers comments about the use of tail rods, to use the correct term, is strange. These items were/are fitted to guide the piston or guide rod rather than equalise the net force on the piston etc. There are many reasons why the up and down forces on the piston can never be totally even, many d...
by steamboatjack
Thu Mar 22, 2018 6:53 am
Forum: Technical - Engines and Boilers
Topic: Resources/Information for Crank Lubrication?
Replies: 118
Views: 71547

Re: Resources/Information for Crank Lubrication?

Its good to see that some one else agrees with what I have been preaching for many years.
Jack
by steamboatjack
Tue Mar 20, 2018 8:17 am
Forum: Technical - Engines and Boilers
Topic: Pressure and Vacuum guages
Replies: 16
Views: 12838

Re: Pressure and Vacuum guages

In the Uk there are;-

www.tjwilliams co.uk
and
www.pressuregauge.co.uk (S.M. gauge co)

Regards
Jack
p.s. "guage" is not a word! (yes I am an old pedant)
by steamboatjack
Wed Dec 13, 2017 8:43 am
Forum: Sales and Trade
Topic: 1889 French Engine - Very odd
Replies: 10
Views: 13246

Re: 1889 French Engine - Very odd

Don't forget the French pioneered the motor car as we know it today, and also made what was one of the best steam cars. French engineers were far better educated than brits in the nineteenth century.
Jack