Wheel Dia
Feet - M

Size Code

Weight
Gear Box Only
Lbs - Kg

Weight
Complete
Lbs - Kg

Stroke
Long & Short
Inches

Maximum
Strokes
Per Min

Rated
Wind
Speed
(MPH)

Gear Ratio*

Maximum
RPM

Working
Pump Rod
Load (aprox)
Lbs - Kg

4 - 1.2

Z

29 - 13

57 - 26

4 & 2-3/8

36

15 - 18

4:1

185

50 - 23

8 - 2.4

A

175 - 79

325 - 147

8 & 6

32

15 - 18

3.3:1

105

200 - 91

12 - 3.6

D

540 - 245

1030 - 467

12 & 9

21

18 - 20

3.5:1

74

450 - 204

16 - 4.8

F

1220 - 553

2360 - 1070

16 & 12

16

18 - 20

3.3:1

53

1000 - 454

20 - 6

L

1865 - 845

4900 - 1769

20 & 15

15

18 - 20

3.3:1

49

1500 - 680

* Iron Man windmills are geared to allow extremely low wind speed operation, increased ability to pump from greater depths and to higher elevations and to be able to operate higher capacity pumps and are preferred over direct drive windmills.

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