• A new truck transmission announced in the USA by
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the Borg Warner Corporation is a four speed automatic unit, said to be the firs: to cover a full range of trucks in the 5.3 to 12 torts g.v.w. cateuory, and some tractive units for grt,w, up TO 22.3 torts. Retail once is expected to be less than that for competitive untts in the over-5-ton range.
The transmission will provide for the follow ing gear ratios: 1st, 3.57 to 1; 2nd, 2.76 to 1; 3rd. 1.46 to 1; and 4th, 1 to ". The reverse ratio will be 4.61 to 1.
A manual control ieVel with seven post. tions, P. R, N, D. 3, 2, I, will permit the driver to select any desired rung() manually, while operation in I'D" is automatic through all four speeds. The sueed-uhLtngt: su;eolturi a ..-ariod according to the veh:cle speed and the .1' iii, te opening. With the lever in -3the amomatic gear-changing is lustre:rod to the first three specds only, and simian,'in -2TrTrh -1no shifting to higher ratios Man those selected wal occur The unIt has a Torque rut,nTt of 4001b31 when used with peuct engines. whie the let input when .wed with d esel engines is
350Ib.ft engine braking is provided in all ratios.
The hydraulic control system comprises a single valve body mounted beneath the trans
mission nd tins n m ttc
dis ehteng axImurn aessi a bility. It is covered only bY a sump pan. while the hydraulic governor he
odtout shafa of mu unit. Full-flow oil filtering IS pruviLTcd The weight of the transmission, including the nydraulic converter and its housing, is 33515. w.th an 111n. diameter converter or 3501b. with a '2in unit.
Borg Warner is also to enter the brakeequiornent market and has introduced in • America an anti-skid system for passenger cars, The company has announced that, in addition it will develop, manufacture and sell urioer licence for US markets five other vehicle brake-con t= oi devices frOITI Alltornotive Products. Clayton Dewandre and Fiat.