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BTAC/IRTE try six of the best
Page 20
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• Six back-to-back comparisons were made at the Institute of Road Transport Engineers/Brewery Transport Advisory Committee trials held last week at MIRA. Instead of the larger field of vehicles seen before this year there were fewer vehicles involved, mainly from brewery fleets.
The only non-operator supplied vehicles were 17-tonners, supplied by Leyland Daf and Steyr in the 17-tonner comparative trials.
The Cummins E365-powered Strap was operated on a fuel comparison involving standard fuel and Shell Advanced Diesel. This fuel is said to offer fuel economy benefits, but the test showed that the Strato returned 40.5lit/100km (6.91inpg) on the standard fuel, rather better than the 41.2lit/100km (6.85mpg) with the Shell Advanced Diesel. The Cummins LTA10-290-powered Foden was run against a similar Eoden, but with a Caterpillar 3306B ATAAC engine. In this comparison, the Cummins used fuel at the rate of 40.76lit/ 100km (6.9mpg), 1.72% better than the Caterpillar's 41.4fiti 100km (6.8mpg). The Bass Volvo FL10 was run, loaded to 38 tonnes, with an air deflector. The deflector was then removed and the trial repeated without the aerodynamic aid. No conclusive results were achieved; fuel consumption was for all practical purposes identical. Wind direction remained constant, though strength increased during the trial.
Stevr did extremely well in the 17-tonne fuel comparisons. The 134kW (180hp) 17S18 was the most economical at 23.71iti 100km (11.9mpg), narrowly beating the second-placed ERE ES6's 24. 2liti100km (11.6mpg). The 156kW (21011p) Steyr 17S21 took third spot at 21.6litilOOkm (11.4mpg).
The twin versus singles comparison involved two identical Royal Mall Parcels Cargo 3828 units towing similar trailers. One of the trailers was running on eight 11R22.5 tyres. the other with four big singles, but the results were inconclusive. Two Whitbread fleet vehicles were used for the drop frame tests. The Car go 1615 eventually proved to be 4.89% more economical than the Volvo FL616. The fuel consumptions achieved were 22.9lit1100km (12.3mpg) and 24. Ilit./100km (11. 7mpg) respectively. A Volvo FL611 provided the basis of the oil comparison trials. It first completed the fuel test cycle with mineral oil. After all the oil in the driveline was replaced with Mobil synthetic, it ran the test again. The synthetic oil run showed a fuel economy benefit of just over 3%, with a fuel consumption figure of 21.01iti 100km (13.4mpg) against the 21.71itilOOkm (13.0mpg) achieved with the mineralbased oil.
ERF tightlipped
• ERF says there are no plans yet to build the ES6 17-tonne truck with a dropframe body, though it admits there have been "one or two enquiries" about such a vehicle from prospective purchase's.
Cary cleans up
• French company Cory Onyx has responded to the problem of waste collection in busy Paris streets by fitting refuse collection and compaction bodies on Renault Master and Iveco Daily chassis. The vehicles are used primarily for collecting rubbish at tourist spots.
Surrey takes five
IN Surrey Fire Brigade has taken delivery of five new Dennis fire appliances — the first to go into service in the UK fitted with the ZF Ecomat 5HP 500 automatic transmission.