The New Zealand Railways Magazine, Volume 1, Issue 3 (July 24, 1926)
The Boiler Programme
The Boiler Programme.
In our May issue some particulars were given regarding thirty-one new boilers on order for locomotives. The following are the details:
Ten class Ab, Wab, Ws, and Q boilers have been ordered, six for renewal of boilers in “Q” class engines, and four as spares.
Ten class “A” boilers are being obtained, eight for renewal and two spares to facilitate repairs.
Two class “X” are also being obtained in order to avoid holding engines too long in the shops while the present boilers are being fitted with new combustion chambers, fireboxes, and super-heaters.
Two class U, Ua, and Uc boilers.
Three class B, Ba, Bb, and We. Two of these will be used for re-boilering class B locomotives and one is spare to facilitate boiler repairs.
Four class Ub (Baldwin) boilers.
This programme has been extended by the ordering of twenty additional boilers, viz, one Ub (Baldwin), two Wg, Ww, ten Wf, and seven Ab, Wab, Ws, Q. All these new boilers are superheated. Grouping of the classes has been made to indicate that the boilers are interchangeable in the classes grouped.
No provision has been made (in view of the intention to reduce the number of classes of engines in service on the railways) for future re-boilering—except to use one or two new boilers previously made and on hand-of the following classes of locomotives:-“D,” “F,” “Fa,” “J,” “K,” “L,” “La,” “M,” “N,” “Na,” “Nc,” “Oa,” “Ob,” “Oc,” “P,” “R,” “S,” “T,” “Ub,” (Brookes), Ud, V, W, Wa, Wb, Wd, Wh and Wj.