Microtromba, that’s the name of these beautiful compressed air fanfares that were already offered as accessories for Vespa and Lambretta in the 1960’s. As this is the original from Italy, the horns are made of chromed metal. In addition the cup is painted red. They are available in two versions. The classic version with a rubber bellows and the foot-operated version, which is very suitable for the scooter treadplate.
In both cases the compressed air is generated manually, so it is completely independent of the on-board power supply. The Microtromba is designed as a double fanfare and produces a harmonic dual sound which, depending on the pressure, can be heard for up to one kilometre. The different fanfare lengths cover a wide frequency spectrum, which further improves perception.
p>So the Microtomba is not only a contemporary accessory but also offers, compared to the standard ratchet of the scooters at that time (if it was available at all), a real safety plus. The version with hand bellows, on the other hand, can be positioned anywhere. The red connecting hose has a length of 1 meter. The dimensions of the horns are 19x12cm. On the side there is a metal bracket with a hole which is screwed to the horns with an M8 screw.
Rubber bladder:The rubber bellows is mounted like a classic bicycle bell. With a clamp suitable for pipes up to 20mm in diameter, it can be mounted on a crash bar, for example. The diameter of the rubber bladder is Ø70mm.
foot pump:For the plastic foot pump a hole with Ø 12mm is drilled into the tread plate. From below, the dismountable actuating pin is then pushed through and screwed from above with the nut supplied. Afterwards only pull the accordion rubber over the pin, finished. The foot pump itself is cylindrical and has a length of 15cm and a diameter of Ø 6cm.
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