The Model 2001-SRNB (Model 2001-SRN, Beltless) was the successor of the Model 2001-SRN, introduced in 2002. The Model 2001-SRNB is a 5th generation Model 2001-SRN with a new rotator. Rather than using the rectangular belt-driven rotator from the Thunderbolt like the Model 2001-SRN did, the Model 2001-SRNB introduced a new cube-shaped direct-drive rotator, eliminating the need for belts and making the siren more maintenance-free. The rotator runs at 2 RPM from factory, and is adjustable up to 6 RPM. The DC motor is directly coupled to the gear reducer, which then spins the rotator's main gear. The chopper motor was also upgraded from 6 hp to 6.5 hp, which increased the siren's sound output to 128 dB at 100 ft.
The Model 2001-SRNB also introduced the decals that every later Model 2001 would use. Early Model 2001-SRNBs used the smaller FS logo from the Model 2001-SRN, but this was updated to the larger logo in 2004. The Model 2001-SRNB had the shortest production run, only being produced for 4 years from 2002 until 2006. Despite this, it still proved to be popular and is still a common find.
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Specifications
General Characteristics
- Created On Windows
- Wingspan 3.7ft (1.1m)
- Length 4.5ft (1.4m)
- Height 38.1ft (11.6m)
- Empty Weight N/A
- Loaded Weight 692,901lbs (314,295kg)
Performance
- Wing Loading N/A
- Wing Area 0.0ft2 (0.0m2)
- Drag Points 4088
Parts
- Number of Parts 16
- Control Surfaces 0
- Performance Cost 66
it may be common in real life, but in simpleplanes it's almost impossible to find
A siren kiddie’s worst nightmare
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The federal signal 2001-SRNB is the pinnacle of siren company capitalism, and it only gets worse with the 2001-130.
Only designed to work for 20 years or so, then you need to buy a new one.
I own a Federal Electric model 2 from 1934, that ran almost every day (as a fire siren) until 1985, then it sat inactive until 15 years ago, when it came down. When we growl tested it, it hadn’t run in 40 years, and it worked perfectly.
And SOMEHOW graveyards are filling with 2001s
.
But like holy hell does its fast wail sound good
make thunderbolt 1003!
plz