The Buckshot Racing #77 700W Electric Power Steering Kit provides adjustable steering assistance for compatible custom inboard and outboard race boats. Built around an EPS assist unit manufactured by JTEKT Corporation in Japan, the package combines an electric assist motor, steering ECU, adjustable controller, wiring, fuse protection, and U-joints.
Its application focus includes F1H2O-style tunnel hulls, F1 and SST-120 race boats, inboard Grand National boats, racing flatbottoms, and offshore builds. Outboard application discussions include the Mercury Racing 250 APX, 360 APX, S3000, and other performance engines.
Electric Power Steering for F1H2O Tunnel Hulls
For teams evaluating electric power steering for F1H2O boat racing, the complete steering arrangement matters as much as the assist unit. In a compatible cable-and-pulley system, an inline EPS assembly assists the steering shaft while the mechanical components continue to transmit the driver’s input.
The adjustable controller allows assistance to be tailored to the boat and driver. The goal is manageable steering effort with useful feedback and predictable response.
F1H2O, F1, and SST-120 references identify the intended application focus. They do not establish confirmed fitment, race use, or sanctioning-body approval.
Inboard GN Boats and Racing Flatbottoms
In Grand National inboard race boats and racing flatbottoms, steering suitability depends on the connection between the helm and rudder, the shaft layout, and the loads carried through the system.
The Buckshot Racing #77 EPS kit offers an assistance option for compatible custom builds. Rudder travel, linkage geometry, structural support, and mechanical integrity remain essential to the finished steering system.
Electric assistance reduces driver effort. It does not remove loads from steering cables, rudder linkage, couplings, or mounting structures.
Mercury Racing APX and S3000 Applications
Builders considering EPS for Mercury Racing 250 APX, 360 APX, and S3000-powered boats should evaluate the hull and steering system together.
Engine horsepower alone does not determine compatibility. Steering leverage, propeller characteristics, shaft configuration, available space, and electrical capacity all influence the application.
The same applies to larger outboard-powered offshore boats. Existing hydraulic steering and multi-engine configurations require separate evaluation; this kit is not a direct replacement for every helm.
Adjustable Assistance for Driver Preference
The controller offers adjustment from no electric assistance to maximum assistance, with intermediate settings between those limits.
This flexibility helps teams develop steering feel around their hull, steering geometry, and driver preference. Maximum assistance is not necessarily the best setting for every racing application.
The 700W rating identifies the system’s power class. It is not a steering-torque specification or an engine-horsepower compatibility limit.
Technical Specifications
| Feature | Specification |
|---|---|
| System rating | 700W |
| Electrical supply | 12-volt, negative ground |
| Core EPS manufacturer | JTEKT Corporation, Japan |
| Assistance control | Adjustable |
| Steering-wheel-side input | 3/4-inch, 36-spline |
| Steering-system-side output | 16.5 mm, 36-spline |
| Main fuse | 60 amps |
| Shaft connections | Input and output U-joints |
JTEKT manufactures the core assist unit. Buckshot Racing #77 supplies and brands the kit, with other components potentially sourced from separate manufacturers.
EPS Components for Custom Race Boat Rigging
The package includes the one (1) electric assist unit, two (2) ECUs (one extra), two (2) adjustable controllers (one extra), one (1) ten (10) foot power and control wiring harness, one (1) fuse and holder, two (2) U-joints, and one (1) set of supporting documentation.
Mounting and steering integration are specific to each boat.
For a compatible mechanically connected steering system, this approach adds electric assistance without introducing a hydraulic assist pump, reservoir, or fluid circuit.
Whether you are evaluating F1H2O tunnel boat steering, an inboard GN build, a racing flatbottom, or an offshore outboard application, start with the complete steering configuration.
Contact Mike Hill at +1-714-697-1716 for tech support.