6V and 12V buzzers and horns for the Li family of Lambrettas and their attachment
In view of the 14 years of construction of the Li family - starting with the TV 175 Series 1 in September 1957 and ending with the dl / GP 200 in April 1971 - the variation in horns and buzzers and their attachment to the Lambretta frame is not that confusing.
First of all, it should be mentioned that there is either buzzing (for AC systems with alternating voltage) or horns (for DC systems with direct current to be recognized by the battery). All Lambrettas were originally delivered with 6 V on-board electronics.
When converting to 12 V systems, the original buzzers and horns continue to work without any problems, even with the 12 volts that are now available. But humiliations should be avoided, otherwise they will quit the service sooner or later.
Series 1 and early Series 2 models to July 1960
On all Series 1 and Series 2 models through July 1960 the horn mount is welded directly to the frame and looks like this:
The right horn:
Horn -GPM 12V DC
Lambretta LI 150 (Series 1), LI 150 (Series 2), TV 175 (Series 1), TV 175 (Series 2)
is screwed directly to the frame and decoupled from the frame with two rectangular anti-vibration rubbers.
Series 2 from 07/1960 and Series 3 up to the end of 1967
During the construction of the Series 2, the attachment of the horn was changed. The welded bracket with two bolts is replaced with a rectangular block with an M8 stud. A retaining plate, often called a Y-bracket, is attached to this. And the original looks like this:
This special retaining plate was not available as a repro for a long time, Timo from TD Customs took care of it and supplies us with it:
Bracket Horn -TD-Customs
Lambretta LI (Series 2), TV (Series 2) -> 07/1960
We already know the corresponding horn:
Horn -GPM 12V DC
Lambretta LI 150 (Series 1), LI 150 (Series 2), TV 175 (Series 1), TV 175 (Series 2)
Since the mounting of the late Series 2 is known to be identical to the Series 3, the Series 3 retaining plate can also be used with the corresponding horn. The retaining plate in the series comes much closer to the name Y-Bracket:
Find here:
and using this part:
fastened to the frame with M8 nut and corrugated washer on the stud.
Horns (or buzzers) suitable for the holder are available in 6 V and 12 V:
Horn (buzzer) CASA LAMBRETTA 6V/12V AC
Lambretta LI, LIS, SX, TV (Series 2-3)
Zinc
Series 3 from 1968 and dl / GP
At the end of 1967, i.e. in 1968, the attachment was simplified and the Y-bracket was replaced by a bracket welded to the frame.
In order to decouple the horn from vibrations, the holes in the retaining plate on the horn are enlarged and special Allen screws and vibration rubbers and washers are used.
Here the horn with the anti-vibration rubbers:
Found for alternating current (AC) and direct current (DC) electrical systems:
And this is what it looks like installed on a preserved dl 200:
The background probably doesn't seem unfamiliar to the inclined Lambretta connoisseur.
Many thanks to Markus for the image rights.
And now something about big horns. Originally, the real horns (i.e. the DC things) had a larger diameter. Namely 85mm. Occasionally we also get those from Casa Lambretta:
