Analysing Engine Performance
Page 45
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THE Model B.70 Master Motor
analyser is a new product of Crypton Equipment, Ltd., Bridgwater, Somerset. This comprises four portable testing units, a combined coil and condenser tester, a tach-dwell-voltmeter. an exhaust-gas analyser suitable for petrol engines and those using butane or propane gas, and a 'combined ignition tester with auto-advance test circuit. It costs £191.
Also new is a compression tester, the Model EIX,35. This will not only measure cylinder compressions. but is supplied complete with special adaptors for measuring oil pressure . on engines fitted with an oil-pressure warning light in heti of a pressure gauge. Three extensions enable the device, which costs £5 5s., to be used for taking the compression of any type of engine.
A range of Crypton home chargers and lightweight chargers has been introduced. Three models of the home charger are available, the AE,1, AE.2, and AE.3, suitable for charging 6or 12-volt batteries. Capacities are 13amp., 2-23amp., and 5 amp., the cost being £3 19s. 6d., £5 12s. 6d., and £7 17s. '6dt respectively. Price of the AD,9 lightweight charger for charging 3-12 cells at 1-11 amp. is £12 10s.
Hardening Sprocket Teeth A NEW oxy-acetylene flame harden 11. machine, which provides surface hardening on sprocket teeth to prevent excessive wear, has been developed by Precision Heating, Ltd., Canbury Park Road, Kingston-on-Thames. Surrey. -Designed with the co-operation of British Oxygen Gases. Ltd., the machine is said to be capable of hardening single, duplex and triplex sprockets of up to about 6-in. diameter. A full set or burners with suitable jet sizes is provided.
The root of each tooth is hardened to just above the pitch circle diameter, the tips remaining soft. The teeth are heated to temperatures in the region of 820° C. and automatically quenched in
soluble MI on a time basis for each • tooth.
Injection Test Bench FULLER details have now been released concerning the Hartridge Junior fuel-injection pump test bench announced by The Commercial Motor on October 4. Produced by Leslie Hartridge, Ltd., 9 Victoria Street, London, S.W.1, the Junior is stated to be suitable for the majority .of the smaller popular distributor and base or flange-mounted in-line pumps for up to six cylinders, made by British, American and Continental manufacturers.
Floor-mounted, the new machine is
powered by a 14-h.p. three-phase A.C. motor, and all the main power shafts run in self-lubricating bearings. .A detachable drip tray permits clean working.
'the new Hartric3ge overflow calibration system is incorporated, and is claimed to ensure the extreme accuracy required in the measuring of small outputs'.necessary with the new C.A.V./ D.P.A. fuel pump.
Infinitely variable speed between 100 arid 2,000 r.p.m. is provided, whilst a 360° ring and pointer is prominently fitted and combined with a 3 to 1 reduction for ease and accuracy when spill phasing, A lever actuating the motor frame may be used to bring a pressure pump into circuit for pressure phasing and positive fuel supply. Rapid calibration is given by an instantaneous 100-shot trip
mechanism operated from either side of the machine. .
Spigoted pump mounting brackets and interchangeable drive coUplings are stated to ensure concentrieity. Various types are available for a wide range of standard pumps and also for the new distributor-type pump. Price of the new appliance is £198 10s., attachments being glassed as extras.
Multi-point Lubrication A'm roved version of the Centralube Multi minor is now available from Centralube, Ltd., Great Western Trading Estate, Park Royal Road, London, N.W.10. This is a small unit for centralized lubrication, designed for use with grease but said to be equally effective with oil, One downward movement of the side lever effects. lubrication of from one to eight points.
The main feature of the device is that the internal piston feeding each point— all of which are at different levels—in succession cannot feed lubricant 10 an outlet until discharge of lubricant to the previous outlet has taken place. This ensures that all points get the same amount of lubricant irrespective of differences in fit. A special screw is provided for de-aerating grease so that air locks can be avoided. There is also a locking bracket for the operating lever when not in use.
Cost of the latest Centralube Multiminor unit is £J0 10s. It will hold 9 oz. of grease or pt. of oil, and the output per point for each lever movement. is 0.4 grammes.
10-cwt. Floor Crane A HYDRAULIC floor crane with a .1-3. capacity of 10 cwt. has been introduced by Mann Egerton and CO., Ltd., 5 Prince of Wales Road; Norwich. The jib is extended by a hydraulic ram which take.; its power from a handoperated pump. Lowering of the jib is controlled by a readily accessible handle, and it can be poSitioned pOsie tively in-,any required position within its range of movement, which is 6 ft. at the hook, •
The base of the crane is constructed in 31 in. hy 2 in. channel-section steel, and rests on four wheels, the two under the column of 3/16-in, folded steel being castors, whilst the two at • the extensions of the legs are fixed. Provision is made in the &.lumn for the stowage of lifting chains.
Maximum height' of the hook is 8 ft. 6 in. and the minimum height ol the crane with the jib lowered is 6 ft. Maximum width of the crane at its base is 3 ft. and the overall length 5 ft. 3 in., whilst the width between the lees at the front is 2 ft. 6 in.
Duplex Compressor LATEST addrtion to the comprehenL-4 sive range of Bristol duplex twostage air-cooled air compressors produced by Bristol Pneumatic Tools Ltd., Causeway Works, Fishponds, Bristol, is the Model 307/1T.6. Compact in design, this machine has a capacity. of 6 c.f.m.