Search found 263 matches

by steamboatjack
Sat Jun 27, 2020 8:23 am
Forum: Sales and Trade
Topic: Elliott Bay Triple expansion castings
Replies: 0
Views: 66

Elliott Bay Triple expansion castings

FOR SALE Set of largely unmachined castings to make an Elliott Bay triple expansion engine. This consists of approximately 80% of the full set as supplied by Elliott bay and includes a FULLY MACHINED cylinder block including fitted piston valve liners. The bed plate (unmachined) is the six bearing t...
by steamboatjack
Sat Jun 20, 2020 7:38 am
Forum: General Steamboat stuff
Topic: Flying a (steaming) kite
Replies: 25
Views: 856

Re: Flying a (steaming) kite

Please note these drawings are the copyright and property of SBA Services ltd.
Jack
(Director SBA Services ltd)
by steamboatjack
Wed Apr 15, 2020 7:20 am
Forum: General Steamboat stuff
Topic: Carrying a steam ship across Africa
Replies: 7
Views: 1388

Re: Carrying a steam ship across Africa

The African Queen story was inspired by a real life incident when two Thornycroft motor launches called "mimi & "toutou" were hauled to Lake Tanganyika to defeat the German craft on the lake during the first world war.
Regards
Jack
by steamboatjack
Fri Mar 13, 2020 8:48 am
Forum: Technical - Engines and Boilers
Topic: Quad versus twin compound
Replies: 12
Views: 4373

Re: Quad versus twin compound

Falcon's fan blows straight into the back of the ash pan, it is driven by a vee belt from the free end of the engine, I have no idea if there is any shut off arrangement when firing? I suspect not. I did suggest that the quad could be repaired/rebuilt even with a cracked casting, but they were not i...
by steamboatjack
Fri Dec 13, 2019 8:32 am
Forum: Technical - Engines and Boilers
Topic: Compound engine cylinder proportion
Replies: 17
Views: 2941

Re: Compound engine cylinder proportion

As noted above, there are many other parameters to consider. Firstly is the steam pressure used? second is if you are condensing or exhausting to atmosphere? also important factors are the point of cut off of the cylinders particularly the H.P. Marine engines were usually designed to allow approxima...
by steamboatjack
Sat Apr 06, 2019 8:20 am
Forum: Technical - Engines and Boilers
Topic: Desuperheater question
Replies: 15
Views: 2542

Re: Desuperheater question

I agree with TT, an economiser would be better than a superheater.
Regards
Jack
by steamboatjack
Sun Jan 20, 2019 8:27 am
Forum: Technical - Engines and Boilers
Topic: Con-rods and length
Replies: 31
Views: 7217

Re: Con-rods and length

If you are designing an engine from scratch as I do, then 2.5:1 is a minimum, my current engine build has 2.67:1
Regards Jack
by steamboatjack
Sun Dec 02, 2018 10:21 am
Forum: Sales and Trade
Topic: leak engine bargain
Replies: 0
Views: 2712

leak engine bargain

by steamboatjack
Wed Nov 14, 2018 8:28 am
Forum: Sales and Trade
Topic: Source of Pipe Elbows
Replies: 9
Views: 3142

Re: Source of Pipe Elbows

These are made in the UK by Pegler Yorkshire and are called Yorkshire GHD (general high duty). they have silver solder in and are expensive. I am not sure of a stockist but Pegler should tell you, please let us know!
regards Jack
by steamboatjack
Wed Oct 31, 2018 4:54 pm
Forum: Welcome
Topic: Gordon Cheape Compound
Replies: 61
Views: 16479

Re: Gordon Cheape Compound

The different laps are probably to arrange an earlier cut off on the H.P cylinder, as there are no eccentrics and assuming all the links are of the same size then this would make sense? Marine engines of more than one cylinder were always considered as separate engines. With Stephenson gear it was n...