OK then what's this

[grossohc]

3 wheeler ice cream sellers bike.

[mike wilson]

Nope, it ain't a lawnmower. It does have a "3 speed" gearbox. The rod that you spy is the clutch operating lever. Quaint ain't it?

 

It is Italian AND moved a bike about...........

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_It_ has a three speed gearbox, or it was attached to a bicycle with a three speed hub? Not a Ducati Cucciolino? (sp?)

[mike wilson]

_It_ has a three speed gearbox, or it was attached to a bicycle with a three speed hub?  Not a Ducati Cucciolino? (sp?)

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No, nowhere near ugly enough. I've just found a picture of one - wish I hadn't.

 

The only cyclemotor I can find that is anywhere near as whacky as this is the Bugatti. That is just bizarre.

[mike wilson]

No, nowhere near ugly enough.  I've just found a picture of one - wish I hadn't.

 

The only cyclemotor I can find that is anywhere near as whacky as this is the Bugatti.  That is just bizarre.

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OK. It is (at least partly) a Moto Guzzi Cardellino engine. All the ones I have found are two strokes but the crank/gear case is distinctive. Powers(ed) a moped. Designed by Antonio Micucci Originally called a Guzzino.

[Guest aironepony]

OK.  It is (at least partly) a Moto Guzzi Cardellino engine.  All the ones I have found are two strokes but the crank/gear case is distinctive.  Powers(ed) a moped. Designed by Antonio Micucci  Originally called a Guzzino.

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Good stuff, and good enough to win! Give the man a POINT!!

 

In 1948/49 the engineer and inventor Egidio Azzola, was responsible for developing a four-stroke conversion for the ubiquitous two-stroke “Guzzino” engine. His idea was based on the view that running the engine as a four stroke on petrol without the oil mixture could produce more useable power; a simple concept requiring a complex solution.

 

The engine was revised by the opening of oil ways within the crankcase to allow engine oil to circulate from and to a separate oil tank. A new casting was created replacing the clutch side case; this new case housed a drive that powered the cam and the oil pump. Push rods running inside a protective tube engaged with the cam and the rockers that operated the overhead valves in a completely new design of cylinder head. The cylinder was bored out to 73cc and fitted with a new piston.

 

All of these parts were made by, and could be bought from, the Bergamo factory of Giovanni and Giulio Lubrina at a cost of 25,000 Lira, for the enthusiast owners to carry out the modification themselves. Alternatively, the Bergamo factory would modify the engine for customers at a cost of 32,000 Lira.

 

The resultant increase in power took the measured output from 2.0 to 3.5 BHP!

 

The Moto Guzzi factory was not however interested in the four-stroke conversion idea, if you have a simple and reliable, easily serviced engine why change it for the complication of the four stroke OHV? The increased production cost would equally have taken the idea off Moto Guzzi’s drawing board.

 

Not too many four stroke examples survive, there is one in Angelo Tadini’s shop in Bergamo, and the only other examples that I have seen are as illustrations in books. I have one that I am building into a Guzzino "Special".

 

 

A display prototype

[mike wilson]

Thanks. That's fascinating stuff. At first I thought it was a ridiculous waste of time and effort. But, for a 75% increase in power, it's not bad at all.

 

Pity they didn't understand than that a few hours with a riffler file and some exhaust/induction work would probably net them even more power than the conversion! Although bolt on goodies were probably a safer bet for most owners. Some things don't change much, do they?

 

If you've got any better pictures, I would like to see them.

 

mike

[mike wilson]

The engine was revised by the opening of oil ways within the crankcase to allow engine oil to circulate from and to a separate oil tank. A new casting was created replacing the clutch side case; this new case housed a drive that powered the cam and the oil pump. Push rods running inside a protective tube engaged with the cam and the rockers that operated the overhead valves in a completely new design of cylinder head. The cylinder was bored out to 73cc and fitted with a new piston.

 

Surely it would have to have a new cylinder? The transfer and exhaust ports would create a terrible power loss [ 8-) ] and the inlet port would spray oil everywhere.

 

mike

[Admin Jaap]

Point to Mike

[Guest aironepony]

Surely it would have to have a new cylinder?  The transfer and exhaust ports would create a terrible power loss [ 8-) ] and the inlet port would spray oil everywhere.

 

mike

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Quite right. I believe that some had the iron 65cc barrel bored out and sleeved.

 

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