(click/space) 5p or 5f the 5 is the power rating and the the F/P is freight or passenger some might just have one or the other. (some might have MT which is just mixed traffic) Class 18xx 8-c : A tank engine that was made in 1900 to work inter city trains and work on small branch lines with push-pull equipment. Top speed:60mph Power/tractive effort rating:2p1f Fuel capacity: 6,100 L water 2.29 tons coal Class 10xx 12-D : Made in 1896 after the fire as one of Ailge's final design before he died the, locomotive is built for heavy shunting at large station or goods yards but have been seen on small branch lines. Top speed:45-50mph Power/tractive effort rating:3p3f Fuel capacity: 6,050 L water 2 tons coal Class 11xx/11-2xx 12-D : Being the 4th tender loco design (I am not making the other 3) of IACO in 1898 meant for short goods work and slow goods and have been one of the most numerous seen as it is very versatile in other works as well. With then some getting a bigger boiler to try get more power out of it. Top speed:50mph Power/tractive effort rating:4MT-5MT Fuel capacity: 9,000 L water 5 tons coal Class 24xx 16-E : Being the one of latest design of the IACO in 1911 and one of the largest yet it is designed for large slow trains or mineral and the some fast goods. Top speed: Yet to be determined Power/tractive effort rating:7f Fuel capacity: 15,000 L water 6.6 tons coal Class 21xx 12-D : Being the largest and latest loco built in 1913 it is designed for large passenger trains and some times express trains with soon bigger ones to come, they can still be used on some standard goods trains but mainly passenger especially for now. Top speed:70-80mph Power/tractive effort rating: 6MT Fuel capacity: 15,000 L water 6.6 tons coal AUX Tender is just for carrying extra water for locomotive that may be working in desert environments or just have to go over a much further distance which may not have to much water towers. All tender and Aux tender will be fitted with a scoop built in to pick water up and into the tender as you will maybe find out why soon. Last thing everybody can use these as these have been made within mind that people have already bought them but also use the assists in it to make your own loco if you wish.