FLIBS 2017: ZF Marine debuts new propulsion concept for inboards

Author:
Publish date:

ZF Marine today introduced the “Project Disruption” concept at the Fort Lauderdale International Boat Show. The new propulsion package is the first contra-rotating system for inboards with traditional shaft-drive systems.

The concept lets inboard-boat builders take advantage of contra-rotating propellers; the most obvious advantage is improved efficiency. The concept takes a standard ZF Marine transmission and utilizes a strut-housed underwater gearbox to transmit power to the twin propellers. Initially, the concept was designed for water-sports towboats and ZF said it can be scaled to larger boats.

ZF Project Disruption1

The “Project Disruption” concept (above and below) lets inboard-boat builders take advantage of contra-rotating propellers.

ZF Project Disruption2

“For many years, there has been little innovation in inboard shaftline technology,” Keith Stanley, pleasure craft product line manager for ZF Marine, said in a statement. “ZF saw the opportunity to bring all the benefits of contra-rotating propellers to this most traditional of propulsion systems. We started with tow sports because it presented a unique opportunity to investigate the concept at full scale while subjecting it to a wide variation of loading conditions.”

In addition to increasing efficiency and acceleration, ZF said the concept will give boatbuilders the chance to consider a wider range of transmission ratios than what is possible with single-prop applications. It should give naval architects the ability to optimize the propeller-to-gear ratio.

Lastly, the contra-rotating propellers will address one of the biggest shortcomings of single-prop inboards — poor performance when backing up. They will eliminate the propeller torque, which basically only lets a boat back up in one direction.

Related

Tommy’s Slalom Shop Adds Dealer

Boulder Boats has locations in Nevada, Arizona and California.

Trade Only Today Returns Tuesday

The daily e-newsletter will not publish Monday, Jan. 18, in observance of Martin Luther King Day.

Mercury and Crownline Make Supply Pact

Under the agreement, Mercury will be the exclusive outboard and sterndrive supplier for the boatbuilder.

Sea Tow Makes Executive Appointment

Thomas Spina, who has more than 25 years of maritime experience in a variety of roles, was named vice president of franchise operations.

Quick Hits: January 15, 2021

IBEX seeks proposals for session topics; Sensible Yacht Cordage changes hands

Godfrey Marine to Host Virtual Showcase

The event is to take place Jan. 23 and will include Godfrey pontoons and Hurricane deckboats.

Boat Shows Throttling Up

2021 is bringing a new paradigm to the winter boat show season.

Correct Craft Plans Expansions

The moves will allow additional growth for Nautique, Supreme, Ingenity and Watershed Innovation.