aus es ▁of ▁the ▁run away ▁ ▁In ade qu ate ▁application ▁of ▁bra kes ▁ ▁As ▁part ▁of ▁his ▁investig ations , ▁the ▁Board ▁of ▁Trade ▁inspect or ▁carried ▁out ▁calculations ▁which ▁established ▁that ▁a ▁train ▁similar ▁to ▁the ▁exc urs ion ▁train ▁could ▁be ▁ha u led ▁over ▁the ▁Arm agh ▁bank ▁at ▁about ▁ ▁by ▁the ▁exc urs ion ▁train ▁engine , ▁and ▁supported ▁this ▁by ▁a ▁practical ▁trial ; ▁however ▁he ▁did ▁critic ise ▁the ▁allocation ▁of ▁an ▁engine ▁with ▁only ▁just ▁enough ▁power ▁for ▁such ▁a ▁duty , ▁especially ▁with ▁a ▁driver ▁who ▁had ▁little ▁knowledge ▁of ▁the ▁route . ▁A ▁further ▁practical ▁trial ▁showed ▁that ▁a ▁single ▁bra ke ▁van ▁with ▁the ▁bra ke ▁correctly ▁working ▁and ▁correctly ▁applied ▁could ▁( without ▁the ▁aid ▁of ▁sc ot ch ing ) ▁hold ▁ 1 0 ▁carri ages ▁on ▁the ▁Arm agh ▁bank , ▁against ▁both ▁their ▁own ▁weight ▁and ▁a ▁n ud ge ▁similar ▁to ▁that ▁which ▁witness es ▁agreed ▁in ▁describing ▁as ▁having ▁been ▁caused ▁by ▁run - back ▁of ▁the ▁front ▁portion ▁of ▁the ▁divided ▁train . ▁Hence , ▁the ▁problem ▁was ▁not ▁the ▁in ade qu acy ▁of ▁the ▁bra ke . ▁ ▁The ▁immediate ▁cause ▁was ▁the ▁want ▁of ▁the ▁application ▁of ▁sufficient ▁bra ke ▁power ▁to ▁hold ▁the ▁rear ▁portion ▁of ▁the ▁exc urs ion ▁train ▁when ▁this ▁portion , ▁consisting ▁of ▁nine ▁coach es ▁and ▁a ▁bra ke ▁van ; ▁which ▁had ▁been ▁separated ▁from ▁the ▁front ▁of ▁the ▁train ▁by ▁direction