'Other' Construction and Allied Systems Downloads

Efel(3) Construction Sets

Efel(3) was an unusual construction system with slotted strips and plates. It was produced in France from around 1946 to 1948


Info from the Metal Constructional Systems Database

Maker
Gédé
System Type
Hole pitch <12.7mm
Country
France
Dates
1946* to known in 1948 (see comment *1)
Material
Aluminium (Alloy) (see comment *2)
Thread
M4
Boss Type
single-tapped
Boss Thread
 
Diametrical Pitch of Gears
--
No. of Parts in System
31
Hole Pitch (Spacing) (mm)
15.0 (see comment *3)
Diameter of holes in Strips(mm)
4.2
Diameter of the Bore in Bosses(mm)
4.1
Diameter of Axle Rods(mm)
3.9
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: cheese (slotted)
Material/Finish of Nuts and Bolts
Aluminium (Alloy) with a Aluminium (Alloy) finish
Size of the Nuts across Flats (mm)
7.1
Bolt diameter (mm)
6.0

Comments
Slotted parts. Most lids have 2 boys with models, but also models with head & shoulders of one. *1*2 1950s & 1960s have also been suggested. *3 Set with steel & coloured parts also exist. *4 10.0 & 20.0 crossways.

Below there are manuals/leafets and photos which can be downloaded by clicking on the appropriate image.


An Efel(3) manual
(Scans from Urs Flammer)

Various photos of the Efel(3) construction system
(Scans from Urs Flammer)