How the Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999 Performed Under Pressure
For years, I’ve been navigating the often-choppy waters of marine propulsion, from maintaining engines in my own workshop to troubleshooting on docksides where saltwater corrosion is a constant adversary. My recent encounter with the Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999 stemmed from a frustrating issue I’d been experiencing with a client’s older Nissan outboard: a persistent, almost unnerving prop hub chatter, particularly noticeable during gear engagement and low-speed maneuvering. It wasn’t just an annoyance; it suggested a potential for undue stress on the drivetrain.
The search for a reliable replacement led me to this particular Rubex hub kit from Solas, a brand I’ve come to trust for their propeller offerings. My primary goal was to eliminate that irritating vibration and ensure a solid, direct connection between the propeller and the engine shaft. The initial impression upon unpacking this hub kit was one of robust simplicity. It felt substantial in hand, a stark contrast to some flimsy plastic components I’ve encountered in similar aftermarket parts. I briefly considered a generic, unbranded hub, but the reputation of Solas and the specific design of the Rubex system swayed my decision. It felt like a step towards a more professional, durable solution, and a wave of quiet optimism washed over me.
Real-World Testing: Putting Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999 to the Test
First Use Experience
My testing ground for this hub kit was my own workshop and, more importantly, the local waterway where the Nissan 70 HP outboard is typically operated. The boat is a modest center console, frequently used for light fishing and general utility. The installation itself was straightforward, performed on my workbench with the propeller removed from the Nissan 70B outboard. The hub fit snugly into the propeller’s cavity, and the included hardware was precisely what was needed for a secure attachment.
During its initial use on the water, I immediately noticed a significant reduction, if not outright elimination, of the previous hub chatter. Shifting into forward and reverse felt cleaner, with less of that jarring metallic clatter that had become so familiar. At idle speeds, the engine felt more planted, the usual subtle vibration from the prop shaft not being absorbed as much by a worn or inadequate hub. There were no surprising quirks; the installation was precise, and the performance was immediately evident, a welcome change from some aftermarket parts that require a break-in period.
Extended Use & Reliability
After several weeks of consistent use, including a couple of longer excursions and numerous short runs, the Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999 has proven its mettle. The engine still transitions between gears smoothly, and that bothersome vibration has remained absent. I’ve intentionally put it through some more demanding scenarios, such as quickly accelerating from a standstill and maneuvering in tight spots where gear changes are frequent, and it has performed admirably.
There are no visible signs of wear and tear on the hub; no cracks, no excessive stiffness or degradation of the rubber compound, and certainly no slippage. Cleaning is as simple as wiping down the propeller assembly during routine maintenance. Compared to the original hub I replaced, which was clearly fatigued and contributing to the chatter, this Solas kit feels like it will offer significantly longer service life. It has certainly outperformed the generic rubber hubs I’ve used on other smaller engines, which tend to degrade and lose their resilience much faster.
Breaking Down the Features of Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999
Specifications
The Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999 is designed for specific Nissan/Tohatsu applications, notably fitting engines such as the 50 HP (50C only) from 1987-91, 55 HP (1981-88), 60A (1986-99), and 70A & 70B (1981-95) models. It features a 13-tooth spline count and is engineered for gearcases with a 3-1/4″ diameter. The core construction is a one-piece rubber compound that integrates anodized aluminum splines.
This combination of materials is crucial for its function. The anodized aluminum splines provide a durable, corrosion-resistant interface with the propeller shaft, ensuring a strong mechanical connection. The one-piece rubber construction is not just about flexibility; it’s engineered with 10 degrees of deflection. This deflection capability is key to absorbing shock, reducing banging when shifting gears or inadvertently striking submerged objects, and ultimately preventing the prop from spinning freely on the shaft under heavy load or impact. Unlike cheaper alternatives that might use plastic components prone to deterioration, this hub’s construction promises longevity and reliable performance.
Performance & Functionality
In terms of its primary job, the Solas RBX-112 Rubex Hub Kit excels. It fundamentally eliminates the dreaded hub chatter and vibration that plague many older outboard setups, offering a much smoother and quieter operation. The 10 degrees of deflection is not just a number; it translates to a tangible feeling of the propeller “giving” slightly under stress, preventing harsh jolts from reaching the drivetrain. This is particularly noticeable when engaging gears or when the propeller might encounter weed or light debris.
The hub’s ability to prevent spinning within the propeller is paramount for maintaining engine performance and preventing costly damage. This kit consistently maintained a solid connection, even when I pushed the engine harder than I normally would during typical use. It meets and exceeds expectations for its intended purpose, providing a noticeable upgrade in refinement and protection for the outboard.
Design & Ergonomics
The design of this Rubex hub kit is straightforward and practical. Its one-piece rubber construction with anodized aluminum splines is a testament to functional engineering. There are no complex parts to misalign or fail. The rubber compound feels robust and resilient, designed to withstand the harsh marine environment.
Ergonomically, there isn’t much to discuss in terms of “feel” for the user, as it’s a component hidden within the propeller. However, its ease of installation and the way it integrates seamlessly with the propeller and engine shaft speak volumes about its thoughtful design. The anodized aluminum splines are precisely machined to fit the propeller shaft, and the rubber’s shore hardness seems well-chosen to provide both flexibility and firm engagement without being overly rigid.
Durability & Maintenance
Based on my initial and extended testing, the durability of this hub kit appears to be excellent. The one-piece rubber construction and anodized aluminum splines are designed for longevity. Unlike many hub kits that use separate metal inserts or less durable rubber compounds, the Rubex system seems built to last.
Maintenance is virtually non-existent beyond standard propeller care. When I perform routine engine checks or propeller maintenance, I simply wipe down the exposed parts of the hub kit. There are no specific greasing points or complex cleaning procedures. The potential failure points, like cracking of the rubber or corrosion of the splines, seem to be minimized by the robust material choices and the protective anodization.
Accessories and Customization Options
The Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999 typically comes with all the necessary hardware for installation, usually including a thrust washer and a locking nut. The instructions provided are generally clear and concise, guiding the user through the simple replacement process.
Beyond the included hardware, there aren’t extensive customization options for the hub kit itself. Its design is specific to the application. However, its compatibility with Solas propellers and potentially other aftermarket propellers designed for this specific spline count and gearcase diameter is a significant factor. This interchangeability is a hallmark of the Rubex system, allowing for flexibility in propeller selection while maintaining the benefits of the hub.
Pros and Cons of Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999
Pros
- Eliminates Hub Chatter and Vibration: Provides a significantly smoother and quieter boating experience by effectively absorbing shock and preventing prop slippage.
- Robust One-Piece Rubber Construction: Utilizes a durable rubber compound that resists deterioration and offers excellent flexibility.
- Anodized Aluminum Splines: Ensures a corrosion-resistant and strong connection to the propeller shaft, preventing wear and slippage.
- 10 Degrees of Deflection: Designed to absorb impact from shifting gears or submerged objects, protecting the drivetrain.
- Reusable: If the propeller itself is damaged, the hub kit can typically be salvaged and reused on a new propeller.
- Designed for Specific Engines: Precise fitment for various Nissan/Tohatsu 50-70 HP models from the specified years.
Cons
- Application Specific: Strictly designed for certain Nissan/Tohatsu models; not a universal fit, requiring careful verification of engine compatibility.
- Price Point: While offering excellent value, it may be slightly more expensive than generic, lower-quality alternatives.
Who Should Buy Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999?
This Solas RBX-112 Rubex Hub Kit is an ideal purchase for owners of the specified Nissan and Tohatsu 50, 55, 60, and 70 HP outboard engines. If you’re experiencing any form of prop hub chatter, vibration during gear changes, or a general lack of crisp engagement from your propeller, this kit is a highly recommended solution. It’s perfect for boaters who value a refined engine operation and want to protect their drivetrain from unnecessary stress.
However, those who own engines outside the specified model years or horsepower range, or those with different spline counts or gearcase diameters, should look elsewhere. This is not a universal hub kit. For those with the correct engine, I would also suggest ensuring you have a good quality propeller that can take full advantage of the hub’s capabilities. A top-tier propeller paired with this Rubex hub kit will offer the best overall performance and protection.
Conclusion on Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999
The Solas RBX-112 Rubex Hub Kit For Nissan/Tohatsu 50 70, 1981 1999 is, in my experienced opinion, a standout component for its intended application. It directly addresses common issues associated with older outboard propellers, delivering a notably smoother, quieter, and more protected operation. The one-piece rubber construction paired with anodized aluminum splines and the 10 degrees of deflection are not mere marketing points; they translate into tangible improvements on the water.
Considering its performance, durability, and the peace of mind it offers regarding drivetrain protection, the price of $55.99 represents excellent value. It’s a small investment that yields significant returns in terms of user experience and equipment longevity. I would absolutely recommend this hub kit to any owner of a compatible Nissan or Tohatsu outboard who is looking to restore or enhance the performance and reliability of their propeller system. It’s a smart, practical upgrade that proves Solas has a keen understanding of what boaters need.