The Mercedes Scroll-Clutch

Browse pages
Current page

1

Current page

2

Current page

3

Current page

4

Current page

5

Current page

6

Current page

7

Current page

8

Current page

9

Current page

10

Current page

11

Current page

12

Current page

13

Current page

14

Current page

15

Current page

16

Current page

17

Current page

18

Current page

19

Current page

20

Current page

21

Current page

22

Current page

23

Current page

24

Current page

25

Current page

26

Current page

27

Current page

28

Current page

29

Current page

30

Current page

31

Current page

32

Current page

33

Current page

34

Current page

35

Current page

36

Current page

37

Current page

38

Current page

39

Current page

40

Current page

41

Current page

42

Current page

43

Current page

44

Current page

45

Current page

46

Current page

47

Current page

48

Current page

49

Current page

50

Current page

51

Current page

52

Current page

53

Current page

54

Current page

55

Current page

56

Current page

57

Current page

58

Current page

59

Current page

60

Current page

61

Current page

62

Current page

63

Current page

64

Current page

65

Current page

66

Current page

67

Current page

68

Current page

69

Current page

70

Current page

71

Current page

72

Current page

73

Current page

74

Current page

75

Current page

76

Current page

77

Current page

78

Current page

79

Current page

80

Current page

81

Current page

82

Current page

83

Current page

84

Current page

85

Current page

86

Current page

87

Current page

88

Current page

89

Current page

90

Current page

91

Current page

92

Current page

93

Current page

94

Current page

95

Current page

96

Current page

97

Current page

98

Current page

99

Current page

100

Sir,

In reply to Mr. Anthony Bird’s query regarding the term “scroll clutch” in his letter in the November issue of MOTOR SPORT. I came in contact with one of these devices at the start of my career in I think about 1928. My employers who had an engineering business in Great Portland Street bought a World War One Mercedes Daimler German staff car.

This was an open four-seater rather on the lines of the 3-litre Bentley with a right-hand gear change outside the body.

The engine used a double-sleeve valve and the clutch consisted of two flywheels in the same shaft the inner faces of which were conical. Interspaced between the flywheels were the two cone clutches, leather lined, and between the clutches was a large tapered scroll spring which engaged the clutches when the pedal was released.

It certainly took some force to depress the clutch in this model.

The double-sleeve-valve engine was wrongly timed when bought and we had to separate the crankcase (in two halves in this car) and lever them apart in order to get the timing gears apart. We also used a bent file tang after the junkhead was removed to establish valve opening position.

I won’t go into a long description of how we tried to compress the scroll spring to assemble the clutch. Suffice to say that the car and clutch worked splendidly after assembly.

I drove it in the pouring rain from Great Portland Street to somewhere in the Vauxhall Road area across the river with four young apprentices urging me on. I had had hardly any driving experience in those days so it was quite a ride.

All the best to your splendid magazine which I have read regularly for 25 or 30 years.

Hilton. JOHN SHERRARD.