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THE ARTICLE "Struggle for World Power(CM, October 5) made interesting reading on a subject where such comment is long overdue. However, I think one fundamental point has to he made regarding 1S0 1585. Neither this standard, nor ECE 24, is acceptable for vehicle homologation regarding net installed power. The only homologatitm standards are BS/AU/141 (UK), DIN70020 (Germany) and EEC 80/1269 (EEC), the Conner two rapidly disappearing.
Standard EEC 80/1269 does not allow a clutched Can to be slipped, it roust be under load. While I agree that Mercedes, l)al and Scania use ISO 1585 (ECE24), they are careful to quote aiso the homologation power to EEC 80/1269.
Volvo does not and is therefore open to sonic just criticism, although it is worth noting that Volvo Germany spec sheets (Frankfurt 85) still religiously quote D1N70020.
So the confusion is not yet entirely over.
S. B. Hartshorne
Cummins Engine Company New Malden