31. Like the subsequent and 16DA, the Class 16C locomotives were all delivered with diameter coupled wheels . 32. In 1943 the decision was taken to alter the second and third coupled wheels to thin flanges. 33. This increase still did not allow sufficient clearance between the boiler barrel and the diameter coupled wheels . 34. For multiple coupled wheels on a rigid chassis a variety of systems for controlled side-play exist. 35. With its coupled wheels , it was very fast and one of them achieved during a test run. 36. Transmission was via a torque converter and a jackshaft final drive mounted ahead of the leading coupled wheels . 37. On the final batch of 1869 the springs were located underneath the axle boxes of the coupled wheels . 38. The leading coupled wheels , which had been flangeless, as built, were flanged during the retyring. 39. To see why, visualise two coupled wheels , near each other, on a common vertical axle. 40. Originally the 141 Class had leading wheels of diameter, coupled wheels of diameter, and cylinders measuring.
