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| Worm Gear (left) and Worm (right) |
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GOVERNOR GEARS - WORM GEARS
Listed below are generic sized worm gears (drive gears) that fit in most cylinder boxes. Bear in mind that the original gears have been wearing familiar, comfortable patterns in one another for over 100 years! Because of this, a new worm or worm gear may not work with an old gear. You may find that you have to replace both gears in order to make them run properly.
All worm gears come mounted on a 10 leaf pinion gear. You may have to re-bush the governor plates to accommodate the pinion size of the new axle. There are times when you can remove the gear from its axle and press fit it to the axle of the original gear.
Count the number of teeth in your worn gear and measure an approximate diameter, then pick the closest match from the list below. (all sizes are in mm)
Stock# #Teeth Diam. Pivot Size Pitch
- WG601 28 10.5 1.0 1.10
- WG602 28 10.5 1.2 1.10
- WG603 30 11.3 1.0 1.10
- WG604 30 11.3 1.2 1.10
- WG605 26 12.5 1.2 1.40
- WG606 28 13.5 1.0 1.40
- WG607 28 13.5 1.2 1.40
- WG608 24 11.6 1.2 1.40
- WG609 36 13.7 1.2 1.10
All Worm Gears are $55.00 each - 4 or more = $50.00 ea.
GOVERNOR GEARS - WORMS (Endless Screws)
As stated above, some old gears may not mate successfully with new gears, so you may need to change both gears. Height of worm is measured from top tip of pivot to bottom tip of pivot.
Stock# Pitch(mm) Height
- W31 1.10 1.65"
- W32 1.10 1.81"
- W33 1.10 1.97"
- W41 1.40 1.65"
- W42 1.40 1.81"
- W43 1.40 1.97"
All Worms are $50.00 each - 4 or more = $45.00 each
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