H4 Marine Limited innovation in technology

Contact Us | Customers
Lloyds Cert's | Data sheets | Photos
Fitting sheets | Images | Testimonials | Cutter types | Prices
CV joint | Thrust bearing | Schematic | Prices
subglobal5 link | subglobal5 link | subglobal5 link | subglobal5 link | subglobal5 link | subglobal5 link | subglobal5 link
subglobal6 link | subglobal6 link | subglobal6 link | subglobal6 link | subglobal6 link | subglobal6 link | subglobal6 link
subglobal7 link | subglobal7 link | subglobal7 link | subglobal7 link | subglobal7 link | subglobal7 link | subglobal7 link
subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link

QuicKutter™ shaft rope/line/debris cutter

 

 
 

 

The quicKutter™ rope cutter has now been in use for over 8 years on RNLI Tamar class offshore lifeboats.

Used by The RNLI (trent, Severn, Tamar), The Royal Navy, Fleming Yachts, Alicats workboats, Aqua Star, Christensen Yachts and Alnmaritec, in many of these cases they have replaced scissor cutters.

This new design of cutter is streamlined, robust and effective. No bearings, no shock loads, no vibration or noise, no effect on performance.

The quicKutter™ has exceeded the expectations of commercial fishermen who were familiar with and had previously fitted scissor or disc cutters.

How does it work?

Lets start with what happens when you snag a line, rope or net. It gets caught by a revolving prop blade. If any of the caught debris is on the boat side of the prop it will be wound onto the prop hub and shaft between the prop and the last bearing support .

With the grey composite spool attached to the prop hub the debris will wind onto the spool. As the debris winds forwards instead of meeting the bearing carrier it will come up against one of the angled blades of the quicKutter™, the debris is moving with the prop, turned by the hp of the engine. 

 

 

 

The pressure of the debris building up forces it into the cutter as can be seen in detail below.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fitting does require the removal of the prop and the spool is machined to suit each individual drive to a pre determined length and diameter. Once fitted to the prop the cutter is then adjusted to run close to the spool. Debris can not build up against the bearing carrier with the cutter in place and in only one case has a cutter been broken. This was as a result of catching chain. The vessel was the Halmatic built Falmouth pilot boat.

Christensen photo courtesy of Christensen yachts, Stephen Cridland

quicKutter™ shaft rope/line cutter

Maritex advanced composites

Marine couplings

 

 

 

 

Contact Us | 2009 H4 Marine Limited