Metric units


Obsidian

Status: Active use

Owner: Russell Clement

Area: UK-North


Hull

Launch. Construction: GRP with mahogany trim.
Hull model: Nell designed by Bossums/Russell Clement at Grange over Sands in 2015
Built 2017 by Bossums/Russell Clement at Oxford/Grange over Sands
Fit out 2016 by Russell Clement at Grange over Sands
LOA: 19' 5", Beam: 5' 6", Draft: 1' 9", Displacement: 2500 lbs.
The hull is grp based on a mould taken from an upper Thames river launch by Bossums of Oxford. Deck layout is for single handed operation and is the fit out is mainly in Utile, Sapele and Douglas fir encapsulated in a uv resistant resin . The deck seams are graphite filled epoxy.

Boiler

SBA VFT 102 Designed by David Beale,
Built 2007 by T.R.S. Boiler Makers at Melbourne, Derbyshire, UK
Fuel: Coal, Pressure: 150 psi,
20" dia Welded steel shell barrel. 0 Expanded steel tubes. Welded steel ,expanded tubes construction,
non-condensing, engine driven pump, hand pump, injector, Windermere kettle, whistle,
original owner stored the boiler unused and my purchase in 2015 was the first time it had been steamed/SBA certified since new. Last hydraulic test 2022.

Engine

Vertical double-acting twin.
Built 2015 by Russell Clement at Grange over Sands
Design: Twin hp by: Russell Clement
Slide valve. Stephenson valve gear.
Power: 3 HP
Own design similar to Taylor Twin but no castings used due to non avalibility and machined from solid. The connecting rods are in aircraft grade alloy. The engine is offset to allow easy access for maintenance and has a belt drive to the prop shaft.

Propeller

Bronze, 3 blades, Right Hand, 16" X 22"

Added to the register: 2017.11.26. Last Modified: 2024.08.05.


Almost complete!

Photos