Harken 250 A Electric Horizontal 12V Flatwinder Powered Block
Shipping and Delivery
Enjoy free shipping on qualifying orders of $145 or more delivered within the 48 contiguous United States. Alaska, Hawaii, Puerto Rico, and other U.S. territories are excluded.
Delivery for qualifying free-shipping orders takes 8 to 10 business days.
Free shipping does not apply to:
- Orders containing only clearance items
- Customized special orders made to your detailed requirements
- Sails and boats
- Long tracks, spinnaker poles, whisker poles, and large tubes
- Oversized or heavy items, including items that require less-than-truckload (LTL) freight shipping
Standard Shipping
- UPS and FedEx Ground: Delivery usually takes 2 to 5 business days for in-stock orders.
- USPS: Allow an additional 3 business days beyond the standard shipping time.
- Saturday delivery: UPS and FedEx deliver on Saturdays only for overnight shipments sent on Friday. Additional charges may apply.
Oversized Items and Freight Shipping
Oversized items, such as whisker poles, spinnaker poles, and tracks longer than 8 feet, require freight shipping. The estimated shipping cost is $500, depending on the destination.
For freight deliveries, provide a commercial address, such as the marina, yacht club, or boatyard where your sailboat is located. The recipient must sign for the shipment upon delivery.
International Orders
International customers are responsible for all applicable import duties, fees, and taxes.
Harken 250 A Electric Horizontal 12V Flatwinder Powered Block
Harken 250 A Electric Horizontal 12V Flatwinder Powered Block
The Harken FlatWinder powered block is a self-contained, low-profile electrically-powered system for mainsheet traveler adjustment. This powerful block is easy to use and offers sailors huge benefits in mainsail control, giving them the means to quickly depower the rig, and delay reefing when the wind picks up. Like a compact captive winch for the traveler, the FlatWinder is completely self-contained. It operates in both directions, allowing the car to move anywhere on the track while also keeping the traveler line off the cockpit floor. Harken recommends installing two space-saving, dual-function Digital System Switches, one button to port, the other to starboard, for activation from both sides of the boat. The blocks wide-diameter drive sheave mounts on a sloped base, forming an angle with the sheave top to contain the line so it doesnt push against the block walls. This progressive grip exerts just the right amount of friction to keep wear on the line and components minimal. Plus, the FlatWinder eliminates the need for winches, making the deck cleaner and easier to navigate. The compact horizontal motor is housed neatly belowdeck and has a maximum working load of 250 kg (551 lb). When used with 10 mm line and a 4:1 purchase, this translates into around 1000 kg (2205 lb) of pull. Line speed with no load is 35m/min. A Harken Dual-Function Control Box is included. This integrated load controller and control box conserves space, and with half as many wires as separate systems, is easier to install. The FlatWinder fits monohulls 15 - 18 m (50 - 60'); catamarans 14 - 15 m (45 - 50'). It is available in 12V or 24V depending the boats electrical system. Switches and circuit breakers are not included.
Technical Description
| Weight (kg) | 12.5 kg |
| Weight (lb) | 27.5 oz |
| Line entry height (mm) | 29 mm |
| Line entry height (in) | 1 1/8 in |
| Line (mm) | 10 mm |
| Line (in) | 3/8 in |
| Fastener circle (mm) | 125 mm |
| Fastener circle (in) | 4 15/16 in |
| Fastener (mm) | M6 SH mm |
| Maximum working load (kg) | 250 kg |
| Maximum working load (lb) | 550 lb |
| Line speed (no load) (m/min) | 35 m/min |
| Line speed (no load) (ft/min) | 115 ft/min |
| A (mm) | 192 mm |
| A (in) | 7 9/16 in |
| B (mm) | 226 mm |
| B (in) | 8 7/8 in |
| C (mm) | 130 mm |
| C (in) | 5 1/8 in |
| D (mm) | 45 mm |
| D (in) | 1 13/16 in |
| E (mm) | 43 mm |
| E (in) | 1 3/4 in |
| F (mm) | 155 mm |
| F (in) | 6 1/8 in |
| G (mm) | 227 mm |
| G (in) | 8 15/16 in |
| H (mm) | 332 mm |
| H (in) | 12 11/16 in |
| Number of fasteners | 6 |
Harken 250 A Electric Horizontal 12V Flatwinder Powered Block
The Harken FlatWinder powered block is a self-contained, low-profile electrically-powered system for mainsheet traveler adjustment. This powerful block is easy to use and offers sailors huge benefits in mainsail control, giving them the means to quickly depower the rig, and delay reefing when the wind picks up. Like a compact captive winch for the traveler, the FlatWinder is completely self-contained. It operates in both directions, allowing the car to move anywhere on the track while also keeping the traveler line off the cockpit floor. Harken recommends installing two space-saving, dual-function Digital System Switches, one button to port, the other to starboard, for activation from both sides of the boat. The blocks wide-diameter drive sheave mounts on a sloped base, forming an angle with the sheave top to contain the line so it doesnt push against the block walls. This progressive grip exerts just the right amount of friction to keep wear on the line and components minimal. Plus, the FlatWinder eliminates the need for winches, making the deck cleaner and easier to navigate. The compact horizontal motor is housed neatly belowdeck and has a maximum working load of 250 kg (551 lb). When used with 10 mm line and a 4:1 purchase, this translates into around 1000 kg (2205 lb) of pull. Line speed with no load is 35m/min. A Harken Dual-Function Control Box is included. This integrated load controller and control box conserves space, and with half as many wires as separate systems, is easier to install. The FlatWinder fits monohulls 15 - 18 m (50 - 60'); catamarans 14 - 15 m (45 - 50'). It is available in 12V or 24V depending the boats electrical system. Switches and circuit breakers are not included.
Technical Description
| Weight (kg) | 12.5 kg |
| Weight (lb) | 27.5 oz |
| Line entry height (mm) | 29 mm |
| Line entry height (in) | 1 1/8 in |
| Line (mm) | 10 mm |
| Line (in) | 3/8 in |
| Fastener circle (mm) | 125 mm |
| Fastener circle (in) | 4 15/16 in |
| Fastener (mm) | M6 SH mm |
| Maximum working load (kg) | 250 kg |
| Maximum working load (lb) | 550 lb |
| Line speed (no load) (m/min) | 35 m/min |
| Line speed (no load) (ft/min) | 115 ft/min |
| A (mm) | 192 mm |
| A (in) | 7 9/16 in |
| B (mm) | 226 mm |
| B (in) | 8 7/8 in |
| C (mm) | 130 mm |
| C (in) | 5 1/8 in |
| D (mm) | 45 mm |
| D (in) | 1 13/16 in |
| E (mm) | 43 mm |
| E (in) | 1 3/4 in |
| F (mm) | 155 mm |
| F (in) | 6 1/8 in |
| G (mm) | 227 mm |
| G (in) | 8 15/16 in |
| H (mm) | 332 mm |
| H (in) | 12 11/16 in |
| Number of fasteners | 6 |
