Reappearance of double-reduction gear after interval of nearly 40 years, in form of separate gear unit, W-N drive, which permits very high speed; high-speed motor troubles; obtaining good commutation; high-speed motor equipment offers substantial reduction in weight over standard single-reduction equipment.
Advantages of high-speed railway motors
Elec. Ry. Jl
Electric Railway Journal ; 71 , n 6
1928
Article (Journal)
English
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