Hi lads and thank you for the reply’s . The reason I added the weights was because of delrailment. The size of the wagons from buffer to buffer is 4”1/2 inches long. Or 11.5 cm. There the Hornby 2 axel tanker wagons , Esso,BP, Shell. There 5 ounce lead fishing weight on each wagon . Total weight included the wagons 105 ounce. The loco was bought from Hattons It the Hornby class 40 with TT Sound. .There a rake of 15 wagons . Cheers.