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They had 500-gallon booster tanks, as did Engine 51. In their outward appearance both E-51 and the LACoFD rigs were identical. All the County Ward rigs plus E-51 had Federal Q2B sirens and Grover Stutter-tone air horns. Because the engine did not meet LACoFD specs, the county would not accept the truck as a donation.
An air horn consists of a flaring metal or plastic horn or trumpet (called the "bell") attached to a small air chamber containing a metal reed or diaphragm in the throat of the horn. Compressed air flows from an inlet line through a narrow opening past the reed or diaphragm, causing it to vibrate, which creates sound waves .
front cover G1 1930. This is the Group G series List of the United States military vehicles by (Ordnance) supply catalog designation, – one of the alpha-numeric "standard nomenclature lists" (SNL) that were part of the overall list of the United States Army weapons by supply catalog designation, a supply catalog that was used by the United States Army Ordnance Department / Ordnance Corps as ...
A fire truck uses an air horn to alert cars of its presence. Air horn - These devices force compressed air from the vehicle's air brake system against a diaphragm, creating a loud noise. Air horns used on emergency vehicles usually have a distinctive tone so they can easily be distinguished from other large vehicles, commanding urgency.
The P-series did its job, and was easier to repair than the M-series [2] because each M-series bell had a separate diaphragm, while the P-series horns had the same diaphragm for each bell, a practice Leslie was already using. [3] M-series horns also needed more frequent maintenance. The P-series was Nathan Mfg. Co's equivalent to the Leslie ...
The "Squad 51" in the Los Angeles County Fire Museum is the last of three vehicles of that model used during the filming of Emergency!. The first was a 1972 D300 1 ton truck cab and chassis. This squad appeared in the first two seasons. An identical 1973 D300 appeared during the third season.
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