Classic Lightweights UK
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Ganna (Cambio Vittoria) - 1933

Owned by: David Rapley

Ganna R B 1

1933 Ganna Cambio Vittoria; frame size 22" seat tube, 22" top tube. With chain oiler in the seat tube. Chain stays are unusual  plaintapered tubes.
Ganna hubs, wood rims  36 spoke and tubular tyres (we, in Australia,  call them singles).
Chainset Ganna 6¾" cranks unusual in that the chain wheel screws into the crank with a large central thread.
Pedals Sheffield Sprint, REG Special Clips with Binda straps
Gears Cambio Vittoria three speed with 1/8 chain. The system is really only a chain tensioner the change effected by slacking the chain, pedalingbackwards and directing the chain with the fingers !
Brakes Universal pre-WWII steel callipers
Stem/Bars Nanni Torino stem and bars. Head set Ganna
Saddle Italia
Extra details I think the bike is correct apart from the brakes which may be as late as 1939. There is no evidence of the later Vittoria mechanical 'chain mover'having been fitted.

Ganna RB 2
Lower seat tube tube with in-tube oiler on down position to allow oil to drip onto chain,
the oiler is tilted to the vertical to cut off supply
Cambio Vittoria gear, Ganna chainset and Sheffield Sprint pedals

Ganna R B 3
Another view of the gear showing 3 x 1/8" freewheel and oiler in the up -'off' position

ganna R B 4 stem
Nanni Torino stem and Ganna headset