Fuel and Water 147 



was the capacity of the turntables. Inciden- 

 tally, this led some railways to decide upon 

 water-troughs in order that they might 

 shorten the length of their tenders, and 

 thus save the reconstruction of turn- 

 tables. 



With the opening years of the present 

 century the adoption of water-troughs be- 

 came fairly general, though, as already 

 noted, the railways south of the Thames 

 were not able to use them, with the result 

 that tenders on these lines are still very 

 long and heavy. 



To secure stability for long tenders many 

 were fitted with eight wheels, either in the 

 shape of a couple of bogies, or with the 

 four sets of wheels arranged in pairs. 

 Strangely enough the latter system seems 

 to have been the better one, contrary to 

 what one might expect. 



It was found that the double bogies 

 imparted a distinct swaying motion to the 

 tenders, and that the wagon- wheeled type 

 of eight pairs of small wheels was a better 

 arrangement. 



