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Craven 70T Breakdown Crane http://www.bdca.org.uk/forumtwo/viewtopic.php?f=9&t=203 |
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Author: | Jeff Mullier [ 10 Jul 2012, 01:40 ] |
Post subject: | Craven 70T Breakdown Crane |
Hello all. I am the archive office & deputy mechanical branch manager of the Richmond Vale Railway Museum in the Hunter Valley, New South Wales, Australia. This group has ex New South Wales Government Railways Craven Bros. 70T breakdown crane 1073 in its collection along with 2 Industrial Works built construction steam cranes ex BHP Newcastle Steelworks. I have special interest in the Craven crane 1073 & have been trying to track down some technical information on this crane (drawings, specifications, works photos etc). We do hold an extremely poor quality microfilm print (near illegible) of the general arrangement of this crane (& its twin 1072) Craven Bros drg No. 30022 "70 Ton Steam Breakdown Crane - Order No.12030 2 cranes". Unfortunately due to the breakup & corporatisation/ privatisation of the New South Wales Railways, access to any records that may have survived in N.S.W. is next to impossible. I was hoping that someone here could assist me if any records etc are possilbly available in the UK, either with Herbert Morris or an archive that the Craven Bros records may have been placed in. |
Author: | Chris Capewell [ 10 Jul 2012, 13:56 ] |
Post subject: | Re: Craven 70T Breakdown Crane |
Craven Bros Crane Archives - Leicester and Rutland Records Office have some Cravens material deposited by Morris. Ref 28D69 106 series, partic. 106/4 - 106/13* , 119*, 120* and etc. |
Author: | Jeff Mullier [ 11 Jul 2012, 22:32 ] |
Post subject: | Re: Craven 70T Breakdown Crane |
Thanks for that Chris. Here is a link to my Flikr set of some photos of 1073 especially the movement & reassembly of the crane. 1073 set Also here are some technical specs I have been able to piece together so far for the crane. Chassis Details Wheel Arrangement: T-T-D-D-T Length over fixed wheelbase: 11’-9 1/8” Length over radial trucks: 22’-9” Length over headstocks: 30’-7” Length over buffers: 33’-7” Brake gear: 2 x 13” dia vertical westinghouse air brake cylinders & WF3 triple valve Lifting Capacity of Crane Carriage blocked up 70 Tons at 21’0” radius 50 Tons at 25’0” radius 35 Tons at 30’0” radius Crane free on rails 12 Tons at 21’0” radius 6 Tons at 25’0” radius Ropes Aux hoist: 3¼” circumference 110/110 Tons tensile strength, hemp cored Main hoist: 5” circumference 110/110 Tons tensile strength, hemp cored Derricking rope: 3½” circumference 110/110 Tons tensile strength, hemp cored Maximum speeds (Steam powered) Hoisting: main block 70 Tons 10’0” per minute Hoisting: aux block 5 Tons 40’0” per minute Slewing: 1 revolution in 1½ minutes Travelling: crane light with match wagon on level about 4 miles per hour Weight in Steam Powered Form Total weight of crane complete in working order with coal and water: 116 Tons Total weight of crane in travelling order with coal and water with jib on match truck: 105 Tons 15 Cwts Water capacity: 255 gallons Coal capacity: 1000 lbs Steam Engine Details Cylinder Details: 10½” dia x 14” stroke Maximum Engine speed: 140 rpm Valve gear: Walschaerts Boiler Details Boiler type: No.18 Squat ‘Spencer Hopwood patent’ vertical multi tubular Boiler pressure: 120 psi No. of tubes: 60 x 2¼” dia Heating area: firebox - 64 sq. ft tubes - 112 sq. ft total - 176 sq. ft grate area: 15.8 sq. ft Diesel Engine & Transmission Details (Converted 1968) Diesel engine: GM 671 No of cylinders: 6 in line Type: 2 stroke, supercharged Bore & Stroke: 4¼” x 5” Reversing gearbox & torque convertor: Allison ‘Torqmatic’ model CRT-5631 Final drive: N.S.W. Department of Railways Design Fuel capacity: 108 gallons Water capacity: 17 gallons |
Author: | Jeff Mullier [ 16 Jul 2012, 07:24 ] |
Post subject: | Re: Craven 70T Breakdown Crane |
Found these rather nice closeups of 1073 whilst carrying out some lifting work during building extensions at Clyde Engineering in 1941 on the Powerhouse Museum's website. http://www.powerhousemuseum.com/collect ... es=&c=&s=1 http://www.powerhousemuseum.com/collect ... es=&c=&s=1 http://www.powerhousemuseum.com/collect ... es=&c=&s=1 http://www.powerhousemuseum.com/collect ... es=&c=&s=1 |
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