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Formsprag Model FSO-500 Overrunning Clutch for Water Plume Ride

A popular theme park located in Ohio needed a replacement overrunning clutch for use on one of its water plume rides

The attraction features a series of 16 ft. long boats carrying 20 passengers each up a 35 ft. lift before rapidly plunging into a splash pool below.

Positioned on the boat lift conveyor drive train at the base of the climb, the clutch prevents potentially dangerous reverse rotation of the conveyor in case of a power outage. The problem was that the existing clutch was failing due to seal problems within the water environment.

Formsprag's Overrunning Clutch Solution

In response, Formsprag provided an upgraded replacement FSO-500 clutch. The new clutch featured nickel plating to fight corrosion due to chemicals in the water. Also, a food-grade grease was substituted to eliminate any oil lubrication from being introduced to the water that splashes onto the riders.

The 4.75” diameter grease-lubricated FSO-500 clutch has a 1,175 lb.ft. (1,598 Nm) torque capacity. All FSO automatic backstopping clutches feature a high torque density and require no adjustments or controls.

Formsprag Modified FSO Clutch


  • Nickel-plated for enhanced corrosion resistance
  • Food-grade grease lubrication
  • 1,175 lb.ft. (1,598 Nm) torque capacity
  • Requires no adjustments or controls

Contact Information

Formsprag Clutch
23601 Hoover Rd.
Warren, MI 48089 - USA
Toll Free: 1-800-348-0881 (Press #1)
Phone: 586-758-5000
Fax: 586-758-5204

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