▁days ▁the ▁‘ train ’ ▁aver aged ▁ 3 0 ▁tri ps ▁per ▁day ▁between ▁Ap ia ▁and ▁to ▁V ae a ▁Camp , ▁where ▁the ▁Railway ▁Corps ▁was ▁enc amp ed . ▁The ▁engine ▁was ▁quickly ▁re brand ed ▁N . Z . R . ▁and ▁christ ened ▁A 1 , ▁but ▁the ▁men ▁missed ▁the ▁om ission ▁of ▁the ▁custom ary ▁wh ist le ▁of ▁an ▁‘ A ’ ▁class ▁engine . ▁Two ▁eng in emen ▁were ▁thus ▁requested ▁to ▁ar range ▁to ▁have ▁a ▁wh ist le ▁aff ixed ▁to ▁the ▁engine . ▁ ▁It ▁was ▁difficult ▁to ▁re - comm ission ▁the ▁wireless ▁station ▁because ▁essential ▁parts ▁had ▁been ▁removed ▁by ▁the ▁Germ ans . ▁The ▁pet role um ▁engine ▁of ▁the ▁Ap ia ▁master ▁but cher ' s ▁ice ▁cre am ▁machine ▁was ▁conf isc ated ▁and ▁attempts ▁made ▁to ▁use ▁it ▁to ▁power ▁the ▁station . ▁It ▁turned ▁out ▁to ▁be ▁far ▁too ▁weak . ▁After ▁re install ing ▁the ▁reg ulator ▁parts ▁that ▁the ▁Germ ans ▁had ▁removed , ▁the ▁original ▁g low - head ▁dies el ▁engine ▁started ▁suddenly , ▁but ▁since ▁the ▁reg ulator ▁had ▁not ▁been ▁set ▁accur ately , ▁it ▁ran ▁at ▁much ▁too ▁high ▁revolution s ▁and ▁the ▁fly w heel ▁expl oded . ▁A ▁part ▁of ▁the ▁fly w heel ▁broke ▁through ▁the ▁roof , ▁reached ▁the ▁tower ▁at ▁a ▁height ▁of ▁ 7 5 ▁m , ▁bent ▁it , ▁fell ▁down ▁and ▁am put ated ▁the ▁leg ▁of ▁a