E-PROPS HI-TECH CARBON PROPELLERS


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EXTENDED HUBS - ISS

 

 

The Integrated Spacer System is a set of "carbon hub + spacer" strong, very light, simply to solide, très léger, simple to assemble and economic, which can equip the E-Props propellers, tractor configuration, for reduced engines.

This system replaces the usual aluminium spacers, expensive, heavy and difficult to assemble.

 

To order, please indicate only 1 measure

Se = spacer extension

 

integrated spacer and spinnermesure longueur espaceur

 

 

Se (spacer extension) from -5mm to +125mm, by increments of 5mm

Please note : the E-PROPS standard hub is placing the spinner at -5mm to the edge of the engine cover

 

 

montage moyeu prolongé e-props

 

A

6 Screws + 1 central nut (for the central screw of the hub)

B

7 Nord-Lock washers

C

1 Flange in anodized aluminium

D

1 upper Half Hub

E

1 lower extended Half Hub

F

Option : 5mm counterplate to adjust the length of the hub (only if necessary)

G
1 reducer flange (on reduced engines) or engine flange (direct drive engine)

H

6 drive lugs : threaded or smooth

I

Option : 6 smooth washers => only for the direct drive engines (smooth drive lugs)

J

 

 

 

Option : 6 nuts => only for the direct drive engines (smooth drive lugs)

In case of threaded drive lugs, the use of nuts is absolutely forbidden.

In case of direct drive engines, the use of threaded drive lugs is absolutely forbidden.

The tightening torque must be applied on the nut side.

 

 

ISS E-Props

hub with integrated spacer 120 mm (for Savannah, for example)

and on the right with a 250 mm spacer

 

 

WEIGHT GAIN

weight of the spacer (carbon extended hub) = 3.5 gram * Se in mm (including screws)
it means 3.5 gr/mm

To be compare with 20 gr/mm of a usual aluminium spacer (with screws)

 

Example for the spacer of a Savannah ultralight :

- weight of an E-PROPS extended carbon hub, length 120 mm (including screws) = 0,42 kg

- weight of an usual aluminium spacer, length 120 mm (including screws) = 2,4 kg

it means a gain of 2 kg !

 

 

 

COST SAVING

The E-PROPS extended carbon hub are at the same price as a standard hub. No need to buy a spacer !

 

 

 

 

EASY ASSEMBLY

3-blades propeller with ISS : 3 blades, 2 half hubs, 1 aluminium flange, 7 Nord-Lock washers, 6 screws, 1 nut
It means 20 parts

3-blades propeller with aluminium spacer : 3 blades, 2 half hubs, 1 aluminium flange, 7 washers, 6 screws, 1 nut , 1 aluminium spacer, 6 drive lugs for spacer, 6 washers, 6 nuts, 6 screws and 6 washers for spacer
It means 51 parts

The ISS allows to reduce of 61% the number of parts necessary for the propeller's assembly.

 

 

 

Integrated Spacer System :
- an important gain of weight : up to 2 kg only for the spacer !
- a reduced cost : the ISS option is offered

- less vibrations because of a direct centering of the propeller
- an easy and fast assembly : only 7 screws M8 to torque

- a reliable system

 

 

E-PROPS ISS on AIRCRAFT

extended hub on a ROTAX's reducer with a spinner

 

 

 

E-PROPS HI-TECH CARBON PROPELLERS