Turning Point Propellers Hub Kit 701 Review

Was the Turning Point Propellers Hub Kit 701 the Right Choice?

As a gear and equipment specialist with over a decade of hands-on experience across diverse environments—from rugged outdoor expeditions to the meticulous demands of workshops, labs, and field research—I approach new gear with a healthy dose of skepticism and a keen eye for practical application. My latest venture into marine propulsion components led me to the Turning Point Propellers Hub Kit 701. This particular kit, designed for replacing propeller housings and offering enhanced lower unit protection, caught my attention due to its advertised features and the brand’s commitment to a lifetime warranty on its hub systems. I was on the lookout for a robust and reliable solution to a recurring issue with prop strikes on a Mercury outboard, which had previously led to costly repairs and downtime.

My journey with this hub kit began with a frustrating incident involving submerged debris, a jarring impact, and a subsequent loss of prop efficiency. This scenario is all too common for boaters who venture into less-charted waters or navigate busy marinas where unexpected obstacles lurk beneath the surface. The need for a durable hub system that could potentially absorb more impact and offer superior protection became paramount. Considering alternatives like standard rubber hubs or more complex aftermarket solutions, I leaned towards the Turning Point Propellers Hub Kit 701 for its unique patented design and the promise of extended durability. My initial impression upon unboxing was positive; the components felt solid, and the one-piece hub construction, featuring marine bronze splines encased in glass-filled nylon, immediately suggested a departure from more traditional, multi-part systems. There was an immediate sense of relief and anticipation that this might indeed be a lasting fix for my propulsion woes.

Real-World Testing: Putting Turning Point Propellers Hub Kit 701 to the Test

First Use Experience

My initial testing of the Turning Point Propellers Hub Kit 701 took place on my personal vessel, a 21-foot Bayliner powered by a Mercury 200hp outboard. The primary scenario involved navigating a local lake known for its hidden stumps and submerged logs, particularly after heavy rainfall had raised water levels and shifted debris. I specifically chose to test its performance in these conditions, as prop strikes are a significant concern in such environments. During one outing, I experienced a minor but distinct bump against a submerged object. The crucial test was how the hub would react; instead of the catastrophic shear or splintering often associated with lesser systems, there was a noticeable, controlled give, followed by an immediate return to normal prop operation.

The installation process itself was straightforward. The kit came with clear instructions, and the design allowed for a relatively quick swap-out with my old propeller hub. Within about 30 minutes, I had the new hub kit installed and the propeller re-secured. One of the first things I noticed was the elimination of a subtle vibration I had previously experienced at certain RPM ranges. This unit seemed to run noticeably smoother, and the engine’s response felt more direct, as if power was being transmitted more efficiently. The Turning Point Propellers Hub Kit 701 immediately impressed with its perceived solidity and the lack of any jarring or unusual noises during operation.

Extended Use & Reliability

Over the course of the boating season, which spanned roughly four months of frequent use, the Turning Point Propellers Hub Kit 701 proved its mettle. My typical usage involves a mix of leisurely cruising, watersports that demand consistent throttle adjustments, and occasional runs at higher speeds. I made it a point to revisit some of the more debris-prone areas of the lake, and even intentionally tested its resilience with a few more deliberate, though still cautious, encounters with submerged obstacles. On one occasion, I ran over what felt like a significant piece of submerged wood, causing a pronounced impact. Once again, the prop momentarily slowed, but the hub system absorbed the shock effectively, and the propeller resumed its normal function without any noticeable damage or performance degradation.

Regarding durability, this hub kit has held up exceptionally well. There are no visible cracks, deformities, or signs of excessive wear on the bronze splines or the nylon composite housing. The system remains as tight and responsive as it was on day one, with no propeller looseness or excessive play developing. Maintenance has been minimal; after each outing, a simple rinse with fresh water and a quick inspection are all that’s required. Unlike older rubber hubs that can degrade over time or develop stiffness, the materials used in this kit seem resistant to environmental factors like saltwater exposure (though I primarily use it in freshwater) and UV radiation. Compared to my previous experiences with various propeller hubs, this Turning Point unit offers a superior combination of shock absorption and long-term reliability, significantly reducing the anxiety associated with underwater hazards.

Breaking Down the Features of Turning Point Propellers Hub Kit 701

Specifications

The Turning Point Propellers Hub Kit 701 is engineered to be a direct replacement for Mercury and Mariner 4.75″ gearcase engines, specifically those with a 15-Tooth Spline Hub. This is a critical specification for ensuring compatibility and proper fitment. The kit utilizes a unique one-piece hub design, which is a key differentiator from traditional multi-part “sleeve and spline” or pressed-in rubber systems. This patented construction, covered by US Patent #6,471,481, #6,685,432, #7,717,678, and worldwide patents with additional patents pending, aims to eliminate common failure points. The inner splines are made of durable marine bronze, offering excellent corrosion resistance and a strong connection to the engine’s drive shaft. This bronze is then encased in a glass-filled nylon outer hub, providing a balance of strength, flexibility, and impact absorption.

The primary function of this specification is to enhance lower unit protection. The design is intended to absorb the shock of a propeller strike, preventing damage to the more expensive and critical components of the lower unit, such as the drive shaft and gears. The Lifetime Warranty Hub is another significant specification, offering peace of mind and a strong indication of the manufacturer’s confidence in the product’s longevity and durability. This warranty even covers situations where the propeller itself might be destroyed due to impact. The compatibility extends to Hustler and Express Series Propellers for select Mercury & Mariner and Mercruiser 200+hp engines, making it a versatile option for a range of boaters. The black color of the hub is purely aesthetic but contributes to a clean, professional look.

Performance & Functionality

In terms of its core function, the Turning Point Propellers Hub Kit 701 performs exceptionally well, particularly in its role as a protective device. Its ability to absorb impact during a prop strike is its most significant performance characteristic. Instead of transmitting the full force of an impact directly to the lower unit, the hub is designed to compress or shear in a controlled manner, sacrificing itself to save more vital components. This functionality was evident during my testing; the slight give I felt during minor impacts was precisely what this system is engineered to do. It significantly reduces the risk of gearbox damage, which can easily run into thousands of dollars for repairs.

Beyond impact absorption, the kit contributes to a smoother and more efficient power transfer. The rigid, one-piece design with its precise bronze splines ensures a solid connection to the engine’s shaft, minimizing any play or slippage that can occur with softer, multi-part hubs. This translates to a more direct throttle response and a reduction in the characteristic propeller vibration and chatter that can plague older or less well-engineered systems. I noticed a marked improvement in overall operational smoothness after installation. The only potential “weakness,” if it can be called that, is that in a severe prop strike, the hub might be damaged beyond reuse, though the warranty covers this. However, the design’s primary strength is to prevent catastrophic damage, and in that regard, it excels. It not only meets but often exceeds expectations for its intended protective function.

Design & Ergonomics

The design of the Turning Point Propellers Hub Kit 701 is a testament to thoughtful engineering focused on durability and performance. The use of durable marine bronze splines for the critical engine connection is a smart choice, offering superior strength and corrosion resistance compared to softer metals or composite materials. Encasing these bronze splines within a glass-filled nylon outer shell creates a composite structure that is both robust and capable of absorbing shock. This one-piece construction is a significant ergonomic advantage; it eliminates the potential failure points found in systems where separate sleeves or rubber inserts are used. The smooth, molded finish of the nylon outer hub is not only aesthetically pleasing but also contributes to its ease of cleaning and maintenance.

From a user’s perspective, the ergonomics are excellent. The hub is designed to fit snugly and securely within compatible propellers, ensuring a tight fit without requiring excessive force. There was no noticeable learning curve during installation; the design is intuitive, and the components align precisely. The absence of multiple small parts, which can be easily lost or misplaced during installation or maintenance, is a welcome ergonomic feature. The overall build quality feels substantial, giving the impression of a component built to withstand the harsh marine environment. The Lifetime Warranty Hub further reinforces the confidence in its design and construction, suggesting it’s built for the long haul.

Durability & Maintenance

The durability of the Turning Point Propellers Hub Kit 701 appears to be exceptionally high, largely due to its innovative one-piece design and the use of premium materials. The glass-filled nylon composite is known for its excellent wear resistance, impact strength, and stability across a range of temperatures and environmental conditions, which are crucial for a marine application. The marine bronze splines are inherently resistant to corrosion and the stresses of rotational force. Based on my extended testing and the product’s construction, I anticipate this hub kit will last for many seasons of regular use, far outlasting traditional rubber hubs which tend to degrade over time.

Maintenance is refreshingly straightforward. After each use, a simple flush with fresh water is recommended to remove any salt, sand, or debris that could potentially cause wear over time. Beyond that, regular visual inspections for any signs of damage after potential impacts are wise. However, the inherent design of this system minimizes potential failure points, so proactive maintenance beyond basic cleaning is unlikely to be necessary. I haven’t encountered any specific maintenance challenges, nor have I noticed any potential points of failure that would cause concern under normal operational use. The system is designed to be robust and self-sufficient, a hallmark of quality marine equipment.

Accessories and Customization Options

The Turning Point Propellers Hub Kit 701 is primarily a replacement component designed for direct installation. As such, it doesn’t come with a wide array of traditional “accessories” in the typical sense. However, it is designed to be compatible with specific Hustler and Express Series Propellers, effectively acting as a customizable interface between the engine and the propeller. This means that a single hub kit can be used across multiple propellers within these series, offering a degree of customization for different boating applications (e.g., speed, pulling, fuel efficiency) without needing to replace the entire hub assembly each time a different propeller is desired.

The primary “customization” benefit lies in the ability to pair this robust hub system with a propeller that best suits your specific engine and boating needs. For instance, if you upgrade to a different propeller from the compatible Hustler or Express lines, you can often reuse the existing Turning Point Propellers Hub Kit 701. This significantly reduces long-term costs, as you’re not buying a new hub with every propeller purchase. While there are no additional components or add-ons directly sold with this specific kit, its design philosophy encourages interchangeability within its supported propeller families, which is a valuable form of customization for the end-user.

Pros and Cons of Turning Point Propellers Hub Kit 701

Who Should Buy Turning Point Propellers Hub Kit 701?

The Turning Point Propellers Hub Kit 701 is an ideal choice for boat owners who frequently navigate waters with submerged hazards such as stumps, rocks, or debris. This includes anglers who fish in shallower or less maintained waterways, recreational boaters who explore various coves and shorelines, and anyone operating in areas prone to unexpected underwater obstacles. If you have experienced costly repairs due to propeller strikes in the past, or if you simply want the utmost peace of mind regarding the protection of your engine’s lower unit, this hub kit is a worthwhile investment. It is particularly well-suited for owners of Mercury & Mariner and Mercruiser 200+hp engines with 4.75″ gearcases that utilize a 15-tooth spline shaft.

Conversely, individuals who primarily operate in deep, clear waters with no risk of submerged debris might not realize the full benefits of this system, and a simpler, less expensive hub might suffice. Also, if your engine or propeller series is not compatible with the Hustler or Express lines, this specific kit would not be suitable. For optimal use, ensuring your propeller is from the compatible Turning Point Hustler or Express Series is key. I would also recommend keeping a spare compatible propeller on hand if you frequently venture into high-risk areas, as the hub’s protective sacrifice, while saving your drive, might still necessitate a prop swap if the prop itself is damaged.

Conclusion on Turning Point Propellers Hub Kit 701

The Turning Point Propellers Hub Kit 701 stands out as a truly excellent piece of marine equipment, offering a blend of robust protection, enhanced performance, and long-term value. Its innovative one-piece design, coupled with the use of high-quality materials like marine bronze and glass-filled nylon, makes it a superior alternative to traditional propeller hubs. The peace of mind that comes with its Lifetime Warranty Hub and its proven ability to absorb the shock of prop strikes, thereby safeguarding the lower unit, is invaluable for any conscientious boater. While the initial investment might be slightly higher than basic replacement hubs, the potential savings from avoiding costly gearcase repairs and the ability to reuse the hub with multiple compatible propellers make it an exceptionally sound long-term investment.

I would wholeheartedly recommend the Turning Point Propellers Hub Kit 701 to any boater who prioritizes durability, protection, and smooth operation, especially those who navigate challenging waters. It’s a product that delivers on its promises, offering a tangible improvement in both equipment longevity and the overall boating experience. If you own a compatible Mercury or Mariner engine and are looking for a reliable, protective, and cost-effective solution for your propeller system, this hub kit is an outstanding choice that merits serious consideration.