103/183 Magnetic Drive Propeller Meter

MainLine Meter Magnetic Drive

Model 103 Mainline Propeller Meters feature Sparling's "magnetic worm gear" which acts as a 3:1 worm gear but without mechanical wear and the extra load that a mechanically driven gear imposes on a shaft.

• Reduced load on the propeller shaft means longer wear for the propeller bearings and longer intervals between maintenance

• Unlike some magnetic propeller meters, Sparling's meter won't jam or "stutter" under rapid accelleration

• As with the direct drive meter, the magnetic worm gear propeller shafts are faced with tungsten carbide tips and carbide discs in the thrust screws for longer life and reduced friction for a longer life.

• A hex insert molded in place, incorporates machined groves to prevent movement and a Woodruff key ensures a positive, wear resistant drive.

Model 183 Mainline Propeller Meters feature Sparling's "magnetic coupling" which acts as a 2:1 worm gear but without mechanical wear and the extra load that a mechanically driven gear imposes on a shaft. Propeller movement is transmitted through six, pole radial Alnico magnets.

• Reduced load on the propeller shaft means longer wear for the propeller bearings and longer intervals between maintenance

• Unlike some magnetic propeller meters, Sparling's meter won't jam or "stutter" under rapid accelleration

• A hex insert molded in place, incorporates machined groves to prevent movement and a Woodruff key ensures a positive, wear resistant drive.

Propeller Facts

• Sparling's molded polyethylene propellers (left) are calibrated to your exact requirements. They have the same specific gravity as water so they virtually "float," eliminating any side loading of the bearings and resultant wear. A hex insert, molded in place, incorporates machined grooves to prevent movement. A Woodruff key ensures a positive, wear-resistant drive.

Don't use propellers containing an insert secured with a setscrew (right). They're at least 18% heavier than Sparling's. That extra weight will create side loads on the bearings, causing them to wear out quickly. Also, check the propeller drive for excessive play. Anything but a woodruff key drive can mean replacement after only a few short months.

For more detailed information, request literature or contact your local Sparling Representative