Petter VJ1
Object ID2916
Works No30197
Accession NoIF:2009:15
StatusOn Display
Category Engine
Collection IDPetter Collection
Made ByPetters Ltd
Made InYeovil, England
DescriptionSingle cylinder vertical semi-diesel engine.

LocationInstalled in Hall 1




First public run at the 2013 End of Season Crankup


From the old Petter factory collection.

# 30197 was despatched on 22/08/1913 to the order of Christy & Co. of Chelmsford - Electrical Engineers.

Sent by rail to Electricity works Portishead. Sent with:
special extended crankshaft in Siemens-martin acid steel, special starting compressor
4' x 16" face pulley, and special silencer and exhaust piping.

Numbered 1 on installation, 2 engines supplied.

Built 17/12/1912 and noted as built for Christy. Also noted is a new cylinder in May 1914

Tested on 13/01/1913 for 48 hours; (Full) 50bhp @ 250 rpm and (max) 66.67 @ 240 rpm. on Crude oil (spec equivalent to diesel with slightly higher SG). Fuel consumption at Full load 24.5 pints per hour! Note full load required water injection. Max load without water 43bhp.Oil consumption 0.18 pints per hour. Test completed 20/01/1913.

Overhauled 29/03/1914. Decoke of piston, adjust governors, fit new lubricator (make not noted) and retest.

The records contain another reference to a replacement cylinder on 28/04/1916. The same refers to 30197 as engine No.2 ?

New cylinder and rings supplied under GO 10245 on 18/1/1937 but not noted to whom. Also supplied were governor pinions.

Some history of Portishead electricty works here

Conservation/ Maintenance History

Engine completely stripped after 40 years static. A puller was required to extract the piston but once out appeared to be in excellent condition.

Return To Service

The engine was rebuilt during September 2013 and first ran on the 8th of October. New main bearings in SAE660 white metal lined. Work carried out by Coleherne in Manchester

New outrigger bearing in SAE660 produced in the museum workshop.
Governor completely rebuilt by Roland Craven
New sprayer made by Roland Craven.
Fuel pump overhauled.
New reed valves produced in reinforced rubber - may need to be replaced by original leather (re-manufactured)
Original crank sealing leather used but new garter springs required.
Sprayer cooling tube replaced.

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