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Bob(3) Construction Sets

Bob(3) was a construction system using rods and plates and was made in Switzerland. Very similar systems were also made in France (Bob(2)) and the UK (Bob(1)), with each country having a slightly different system It was produced in Switzerland from around 1942 to 1952.


Manufacturer / Distributor

Fraba, Geneva, Switzerland
From later 1950s: Papyria, Zurich, Switzerland


Info from the Metal Constructional Systems Database for BOB [3]

Maker
 
System Type
Mainly Rods/Tubes
Country
Switzerland
Dates
1943 to early 1950 (see comment *1)
Material
Aluminium (Alloy)
Thread
M3
Boss Type
single-tapped
Boss Thread
M3
Diametrical Pitch of Gears
--
No. of Parts in System
43
Hole Pitch (Spacing) (mm)
20.0 (multiples of value shown, including half.)
Diameter of holes in Strips(mm)
3.1
Diameter of the Bore in Bosses(mm)
3.1
Diameter of Axle Rods(mm)
3.0
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: cheese (slotted)
Material/Finish of Nuts and Bolts
Steel with a Dull plated finish
Size of the Nuts across Flats (mm)
6.0
Bolt diameter (mm)
5.0

Comments
Alloy Rods in sets. Joints marked BOB. Plates are different to BOB2 which in turn differ from BOB1. Outfits included theme sets for small Vehicles & Aircraft. *1 50l also reported.

The MCS document for this system is shown below. It can also be downloaded to your computer if desired here

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The report can be zoomed into, made full screen or downloaded as a pdf document by using the controls provided


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


A leaflet for Bob (in German)
(Added 25/10/2018)

The manual for Bob set 3 (in German)
(Added 25/10/2018)

A leaflet for Bob vehicle sets (in German)
(Added 25/10/2018)

The manual for Bob vehicle sets (in German)
(Added 25/10/2018)

Various photos of the Bob construction system
(Added 25/10/2018)