Motobi 125: When Small Is Better

By Robert Smith
Published on July 29, 2013
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Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
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The 125cc engine is fed by a single 18mm Dell’Orto carburetor.
The 125cc engine is fed by a single 18mm Dell’Orto carburetor.
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Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
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Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
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The small “latch” arm that holds the fuel filler cap shut is pure art.
The small “latch” arm that holds the fuel filler cap shut is pure art.
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Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
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Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
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Light and fun to ride, the Motobi is an enjoyable cornering partner.
Light and fun to ride, the Motobi is an enjoyable cornering partner.
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Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.
Alberto Sisso's 1955 Motobi Catria Imperiale Sport 125cc.

1955 Motobi Catria Imperiale Sport 125cc
Engine:
125cc air-cooled OHV 4-stroke, 54mm  x 54mm bore and stroke, 6.5:1 compression ratio
Claimed power: 5.8hp @ 6,500rpm
Top speed: 75mph (est.)
Weight: 205lb (93kg)
Fuel capacity: 4gal (15ltr)

It’s an ill wind that blows no good, goes the old saw — though the good sometimes arrives in unexpected ways. When an outbreak of hoof-and-mouth disease caused the Isle of Man TT races to be canceled in 2001, Ducati maven Vicki Smith changed plans, diverted to Bologna instead, and hitched a ride in the Motogiro d’Italia. It was the beginning of a love affair that has lasted 12 years.

Riding the Motogiro

“Ducati sourced me a vintage bike” for the Motogiro, Vicki says. “I showed up at the Ducati factory and there was this Motobi. I had never ridden a vintage bike farther than around the block, and I’d never really kickstarted anything. I developed a passion for Ducati singles because of that Motobi. I think it had been dragged out of someone’s shed. It had cracked tires that were more than 20 years old. The bike was terrible. Honestly, I can’t possibly begin to describe how bad the bike was. And yet with simple tools that I carried in my tool roll and the help of those who were willing to stop and help me, I managed to be the first woman to ever start and complete a Motogiro. They put me in the Motogiro d’Italia hall of fame!”

That Giro experience turned Vicki on to small Italian singles in general, and Motobis in particular (though Ducati remains her first love). “The Motobi was uniquely suited for the Motogiro. What I liked about it was that it had a lot of power even though it’s a small, relatively slow bike. They’re very bulletproof, and they’re attractive — that ‘egg’ motor alone was remarkable. And what I like about the little bikes in particular is that they have made me a much better rider than I ever could have become on the big bikes,” Vicki says.

A Motobi of her own

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