Harken 57mm Carbo Single Ratchamatic Block
The Carbo Ratchmatic is a load-sensing ratchet block that rolls freely in both directions under low loads, and automatically engages the ratchet as loads increase.
Shifting between ratchet and light air modes is seamless. Unloaded main and jib sheets run out freely during mark rounding's and asymmetrical spinnakers free instantly during jibes.
Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style.
The Ratchamatic cheek block mounts on either port or starboard.
Holding power of 57 mm is as high as 10:1. The 75 mm up to 15:1.
For the ultimate system, mount a Ratchamatic on the boom above a cockpit-mounted switchable ratchet to allow the mainsheet to run freely in light air, and ensure double holding power in heavy air.
Specifications
- SWL (lb) 500
- Breaking strength (lb) 2000
Safe working loads and breaking strengths for blocks based on cam strengths
CHRISTMAS ORDERS
Australia Post and our Commercial Couriers are expecting the festive season to be extra busy this year. Based on their advice, we cannot guarantee orders placed after the cut-off dates listed below will be delivered by Christmas.
To avoid disappointment place your Christmas orders as early as possible.
Overseas, offshore islands and distant mainland locations may take up to 3 or 4 weeks to deliver. Please contact your local Mail Order Department to discuss specific details relating to your situation.
SHIPPING
All orders are shipped from our Brookvale, Sydney order fulfilment centre. Orders are normally shipped within 5 business days - most quicker!
Shipping day estimates after your order leaves our fulfilment centre in Sydney are based on Australia Post domestic delivery times:
| State | Regular |
Express |
| ACT | 2 - 3 business days | 1 - 2 business days |
| NSW | 2 - 4 business days | 1 - 3 business days |
| NT | 4 - 13 business days | 3 - 5 business days |
| QLD | 3 -12 business days | 2 - 4 business days |
| SA | 3 - 5 business days | 2 - 4 business days |
| TAS | 4 - 8 business days | 2 - 4 business days |
| VIC | 3 - 5 business days | 2 - 3 business days |
| WA | 5 - 10 business days | 2 - 6 business days |
* These delivery times are an estimate and actual delivery times may vary based on peak periods and other external factors. Bulky orders may take longer.
Shipping rates are automatically calculated based on live quotes supplied by our shipping partners. The quote takes into consideration, the bulk of your cart, where you want it delivered and if you want express or standard shipping.
Get a shipping rate estimate by adding items to your online cart. Go to the cart by clicking on the shopping cart icon located at the top right of the page. Then enter your shipping destination information into the "Estimate Shipping and Tax" section of the shopping cart summary.
International Shipping
We are currently unable to deliver online orders outside of Australia.
If you are located outside of Australia and wish to place an order offline. Please contact our Mail Order department or send us an enquiry via the orange help bubble located at the bottom right of this page.
RETURNS
Online purchases can be returned/exchanged within 30 days. Some exclusions do apply.
Visit our Returns Policy page for details on how you can return an item.
