Kipper
Hull
Open Launch.
Construction: GRP.
Built 2002 by Doug Sims at Whitby
LOA: 15' 3", LWL: 15' 0", Beam: 4' 6",
GRP hull based on the Ruswarp, nr Whitby, rowing boats, with fore and aft decks
Boiler
VFT Built by H. Holt at Hull
Fuel: Coal, Pressure: 150 psi, Grate area: 0.29 sqft, Heating area: 7 sqft, Output: 55 lbs/hr,
10" dia X 25" high Steel barrel. 36 X 3/4" dia Steel tubes. Welded steel ,expanded tubes construction,
non-condensing, hand pump, injector, whistle,
Operates in puffer mode, with a converging-diverging funnel with a 60mm throat, which aims to maximise the draught.
Engine
Double-acting single. 2 1/4" X 3 1/2"Built 2002 by Doug Sims at Whitby
Designed by: Doug Sims
Stephenson valve gear.
Overhung crank with timing belt drive from the crankshaft to the output shaft with a 2:1 speed increase. Needle roller bearings are used successfully (so far) for the big and little ends and for the valve eccentrics. Plummer blocks are used for the main bearings. A mechanical lubricator injects oil into the HP steam, and wick/capillary action lubrication for the cross head. Cruising at 150 rpm engine speed, with double this for the propeller.
Propeller
Stainless Steel, 3 blades, Left Hand, 17" X 22"
Shaft: 1" Stainless Steel
Fabricated
Last Modified: 2017.10.23.
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photo by Mark Smith, Windermere 2013
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