When it comes to maximizing the performance of your big twin engines, choosing the right cam is crucial. Among the myriad of options available in the market, the S&S 585 cam has stood out as a top choice for many enthusiasts. In this article, we will delve deep into the specifications, features, and benefits of the S&S 585 cam to help you make an informed decision.
Introduction to S&S Cam Offerings
Since its inception, S&S has carved a distinctive niche in the motorcycle industry, cementing its reputation as a trusted and reliable name when it comes to high-quality camshafts. Dating back to 1999, S&S has continuously evolved, offering an expansive range of cam grinds tailored explicitly for big twin engines. Recognizing the diverse needs of motorcycle enthusiasts, S&S ensures versatility by providing both chain drive and gear drive versions of their cams. This strategic approach ensures they cater to the broad spectrum of performance requirements, from casual riders to racing aficionados. Their unwavering commitment to innovation and excellence has been instrumental in helping riders achieve optimal performance and making the most of their machines. Whether one is looking for torque enhancement, improved horsepower, or a balance of both, S&S cam offerings stand as a testament to the brand’s dedication to engineering prowess and passion for the world of motorcycles.
Detailed Specifications of the S&S 585 Cam
Designed specifically for engines ranging from 88 to 95 CID with compression ratios from 9.7:1 to 10.5:1, the S&S 585 cam is also compatible with 100 to 124 CID engines having a compression ratio between 9:1 to 10:1. Here are its specific cam specs:
- Intake Open/Close: 20/45
- Exhaust Open/Close: 60/20
- Lift: .585
- Intake Duration: 245
- Exhaust Duration: 260
- TDC Lift (Intake): .186
- TDC Lift (Exhaust): .179
Advantages of Chain Drive with Hydraulic Chain Tensioners
The progression and innovation in motorcycle mechanics have led to the development of advanced components, among which the chain drive with hydraulic chain tensioners stands out. Rooted in practicality and performance, this system offers several advantages that cater to a broad spectrum of motorcycle applications. Here are some of the key benefits:
- Optimized Performance: While ultra-high performance applications might demand specialized setups, the chain drive with hydraulic chain tensioners has proven to be efficient and reliable for most standard and performance-oriented scenarios.
- Cost-Effectiveness: One of the standout advantages of this system is its economic feasibility. When transitioning to the S&S chain drive cam, riders are not overhauling the entire system. Instead, they’re only updating the cams. This approach leverages the stock cam drive components, eliminating the need for a complete replacement and leading to substantial cost savings.
- Durability and Maintenance: Hydraulic chain tensioners are known for their durability, often requiring less frequent adjustments than their manual counterparts. This long-lasting nature translates to fewer maintenance intervals and reduced long-term expenses.
- Smooth Operation: The integration of hydraulic tensioners ensures consistent tension on the chain, resulting in smoother operation, reduced wear, and enhanced longevity of the entire cam drive system.
Easy Start Feature: Revolutionizing Big Twin Starts
The Easy Start feature is an innovative solution from S&S that simplifies the starting of late model big twins. This mechanism involves a centrifugally retracted, spring-loaded compression release lobe on each exhaust lobe. When the engine is cranking, this lobe slightly opens the exhaust valve, making the engine turn over effortlessly. Post ignition, when the engine speed reaches 800 RPM, the lobe moves out of the tappet roller path, ensuring normal running with full compression.
Alternatives to the S&S 585 Cam
The S&S 585 cam is a highly-regarded choice for motorcycle enthusiasts looking to optimize performance, but it’s essential to know there are alternatives available. Various brands, including HD® Screamin’ Eagle® and Andrews®, offer cams with similar specs and applications. For instance, the HD® Screamin’ Eagle® SE-211/251/257 cams and the Andrews® 31H/32H/50H/55H/67H cams are often compared to the S&S 585 in terms of their performance characteristics. Each cam has its unique features and benefits, making it imperative for riders to assess their engine’s requirements and their personal riding style before settling on the ideal camshaft. Exploring these alternatives can help motorcyclists find the perfect fit for their machine and riding expectations.
| S&S | H D® Screamin’ Eagle® | Andrews® | Most Fitting Application |
|---|---|---|---|
| 551 | SE-203/255 | 21H/26H | Touring Models |
| 570 | – | 54H | All Big Twin Models |
| 583 | SE-203/255 | 21H/26H | Softail®/Dyna® Models |
| 585 | SE-211/251/257 | 31H/32H/50H/55H/67H | All Big Twin Models |
| 625 | SE-258/260 | 60H | All Big Twin Models |
| 640 | SE-264 | 59H | All Big Twin Models |
| 675 | – | 64H | All Big Twin Models |
While the S&S 585 cam offers immense torque and horsepower increments starting from 3000rpm and holding till redline, it’s also useful to compare it with other popular cams:
- S&S 585 vs HD® Screamin’ Eagle®: The 585 is analogous to SE-211/251/257.
- S&S 585 vs Andrews®: Comparable to 31H/32H/50H/55H/67H cams.
This cam is versatile, providing peak performance for both 88″ – 103″ engines and larger engines.
Conclusion
The S&S 585 cam is a remarkable piece of engineering, providing a balanced blend of torque and horsepower for a wide range of big twin engines. Its compatibility, combined with the advantages of chain drive and the revolutionary Easy Start feature, makes it a preferred choice for many motorcycle enthusiasts. Whether you’re looking to upgrade or replace your current cam, the S&S 585 cam promises reliable performance and value for money.