21. Inside all three models, the tone generators, drawbars , and keyboards were identical. 22. The passengers'complaints were dealt with by reducing the tension in the drawbar spring. 23. The power drawbar would grip the pull stud rather than screwing into the tool shank. 24. Jimmy Smith popularised the Hammond organ, and its technique of using drawbars and pedals. 25. The 730 was a 59 hp tractor at the belt and 54 at the drawbar . 26. The drawbar connection between the locomotive and tender was also strengthened at the same time. 27. The physical characteristics of sound that determine the perception of timbre include the spectrum, drawbars . 28. The 4020 has a six-cylinder engine tested at 84 drawbar and 96 PTO horsepower. 29. The bogies are of welded steel construction, with tractive forces transmitted by a low mounted drawbar . 30. The tower's entrance has a drawbar -slot, a murder-hole and stairs.