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  3. RONSTAN RF1377

RONSTAN RF1377 Ap Block Slide Sheave On

Rf1377 Ronstan Ap Block On 1 Inch Slide 2 Sheave

( Brand: Ronstan ), ( Manufacturer Part Number: RF1377 ), ( Part Type: Block Slide ), ( Item Height: 1 In )

Review RONSTAN Ap Block On Inch Slide Sheave

The Ronstan RF1377 AP Block Slide Sheave is a high-performance sheave designed for use in sailing applications where a reliable and efficient block and tackle system is essential. This sheave, part of Ronstan's renowned AP Series, is characterized by its robust construction and superior load-bearing capacity.

The RF1377 sheave features a block slide design, which allows the block to move smoothly along the sheave while under load. This is particularly beneficial in sailing applications where the block may need to be adjusted frequently. The sheave is made from a strong and durable polymer material, ensuring long-lasting performance even in harsh marine environments.

One of the key advantages of the RF1377 sheave is its large diameter, which measures 137mm (5.4 inches). This large size enables the sheave to handle heavy loads efficiently, making it an ideal choice for larger sailboats or high-performance racing yachts. The sheave also has a rope capacity of up to 16mm (5/8 inch) in diameter, making it suitable for a wide range of applications.

The Ronstan RF1377 AP Block Slide Sheave is designed with a self-aligning bearing system, which ensures that the sheave remains correctly aligned even under heavy loads. This feature helps to reduce wear and tear on the sheave and the associated hardware, prolonging the life of the system and minimizing the need for maintenance.

The sheave comes with a built-in anti-friction coating, which reduces the amount of force required to move the block along the sheave. This not only makes the system easier to operate but also helps to reduce wear on the rope and the block itself. The coating is made from a high-quality PTFE material, which provides excellent resistance to abrasion and wear.

The RF1377 sheave is also designed with a large, easy-to-grip handle, which makes it simple to install and remove from the boat. The handle is securely attached to the sheave using stainless steel bolts, ensuring that it remains firmly in place even when under heavy load.

In summary, the Ronstan RF1377 AP Block Slide Sheave is a high-performance, durable and efficient sheave designed for use in sailing applications where a reliable and efficient block and tackle system is essential. Its large diameter, self-aligning bearing system, and anti-friction coating make it an ideal choice for handling heavy loads efficiently, while its easy-to-grip handle makes it simple to install and remove from the boat.

The Ronstan RF1377 AP Block Slide Sheave is a popular choice among sailors for its durability and performance. Here are some pros and cons to consider before making a purchase:

Pros:

1. High-performance: The Ronstan RF1377 AP Block Slide Sheave is designed to provide smooth and efficient sheeting, reducing friction and wear on the rope.

2. Durable: Made from high-quality materials, this sheave is built to withstand the harsh marine environment and heavy usage.

3. Versatile: The Ronstan RF1377 AP Block Slide Sheave can be used for various applications, including mainsheets, genoa sheets, and spinnaker sheets.

4. Corrosion-resistant: The sheave is coated with a protective powder finish to prevent corrosion and prolong its lifespan.

5. Easy to install: The sheave comes with a mounting bracket for easy installation.

Cons:

1. Price: The Ronstan RF1377 AP Block Slide Sheave is priced higher than some other sheaves on the market, which may be a deterrent for some buyers.

2. Weight: This sheave is heavier than some other options, which may be a consideration for sailors looking to reduce weight on their boat.

3. Limited size options: The Ronstan RF1377 AP Block Slide Sheave is only available in a few sizes, so it may not be suitable for all applications.

In conclusion, the Ronstan RF1377 AP Block Slide Sheave is a high-performance and durable option for sailors looking for a reliable sheave. Its smooth operation, versatility, and corrosion-resistant coating make it an excellent choice for sailing applications. However, its higher price point and limited size options may be a consideration for some buyers.

Recommendation:

If you are looking for a high-quality, durable, and efficient sheave for your sailing needs, the Ronstan RF1377 AP Block Slide Sheave is an excellent choice. Its smooth operation and corrosion-resistant coating make it an ideal option for heavy usage in the marine environment. While it may be pricier than some other options, its long lifespan and versatility make it a worthwhile investment for serious sailors.

Details:

With the trusted brand of Ronstan and specific manufacturer part number RF1377, this block is a reliable durable option for sailing gear. The Ronstan RF1377 AP Block on 1 Slide with a 2 Sheave is high-quality sailing hardware accessory designed for boats. Its convenient slide and sheave design allows for easy efficient operation, making it a valuable addition to any sailing vessel.

part #: rf1377 price

  • $35.00

specifications sailgrinch:

  • brand: Ronstan
  • mpn: Rf1377
  • part type: Block Slide
  • item height: 1 In

shipping sailgrinch:

  • class: Standard
  • type: Calculated
  • transit: 7-11 Days
  • cost: $8.95
  • service: USPS Ground Advantage
  • carrier: USPS

returns sailgrinch:

  • policy: No Returns

seller sailgrinch:

  • rating: 96.2%
  • # reviews: 468
  • city: North Dartmouth, Massachusetts

payments sailgrinch:

  • wallet: Google-pay
  • other
  • credit card: Visa

offer sailgrinch:

  • availability: In Stock
  • options: Ship-to-home
  • quantity: 2
  • sold: 0
  • started: May 1, 2026

general sailgrinch:

  • Boat Parts > Sailing Hardware Gear > Other Sailing Hardware Gear
  • condition: Used
part type: block slide, item height: 1 in,
category: boat parts > sailing hardware gear, sku: 4131679217532813,

Ronstan RF1377 Is Similar To:

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1 offer $35.00 USD
  • Offer #1: $35.00 price + $8.95 shipping estimate = $43.95* total. Its convenient slide and sheave design allows for easy and efficient operation, making it a valuable addition to any sailing vessel. The Ronstan AP Block on 1" Slide with a 2" Sheave is a high-quality sailing hardware accessory designed for boats.+$8.95 shipping

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