last update Aug 07, 2017

Electric constant speed MT-Propeller

2-blade electric constant speed propeller
Model No. max. Diameter max. Power max. RPM
MTV-1
(.pdf, 200k)
Refer to TCDS
MTV-17
(.pdf, 110k)
Refer to TCDS
MTV-20
(.pdf, 120k)
Refer to TCDS
MTV-30 110cm/43.3in 110HP 4000
3-blade electric constant speed propeller
Model No. max. Diameter max. Power max. RPM
MTV-7
(.pdf, 170k)
Refer to TCDS
MTV-18
(.pdf, 170k)
Refer to TCDS
MTV-23
(.pdf, 125k)
213cm/84in 350HP 2700
4-blade electric constant speed propeller
Model No. max. Diameter max. Power max. RPM
MTV-10
(.pdf, 130k)
Refer to TCDS

Electrically controlled constant speed propeller

The electric variable pitch propellers named ELCOPROP® are certified as 2-, 3- and 4-blade propeller models for engines producing up to 350 hp.

Feathering capability can be integrated optionally, reverse capability can be integrated for the use on airships, only.

ELCOPROP® is the only certified Electric Constant Speed Propeller available worldwide and is patented in the U.S. and Germany. Several STC's are available.

The single piece hub is made from forged or solid aerospace aluminum alloy. It is corrosion protected and the hub's outside can be additionally painted for sea applications.

The blade bearings are special design ball bearings, where the balls act as split retainers for holding the blades into the hub, which creates an increased safety factor against blade loss.

The propeller construction has a simple and light-weight design without any unnecessary part.

All weights required for static propeller balancing are installed on the front spinner bulkhead.

Presently most of our blades are built in natural composite design, by using high compressed thin layered laminated beech wood, which has a similar tensile strength as steel, in the root section and selected lightweight laminated spruce wood in the remaining part of the blade.
The wooden core is reinforced by layers of epoxy fiberglass, Kevlar® or carbon fiber and sealed by several coatings of acrylic-polyurethane paint.

An aluminum blade ferrule is attached to the blade root by using special design patented lag screws.
The pitch change of the blade is enabled by an excenter pin installed in the blade ferrule.
Counterweights can be installed at the blade ferrules for reducing the pitch change forces.

The critical section of the blade's leading edge is protected by a bonded on stainless steel erosion sheath.
The inboard section of the leading edge is protected by a self-adhesive PU-strip. All of the above makes the blade all weather operable.

The spinner dome is a single piece part made from fiber reinforced composite (Kevlar®).
It is extremely crack resistant as well as very light weighted.

Three different control units are available for these propellers:

P-120-M for manual pitch control.
P-120-A for automatic pitch control.
P-120-U combines both manual and automatic control.