Birken Vogt
Charter Member
Old fire tech instructor was once ranting about "kids these days" not wanting to pump at a high enough pressure for hose lines.
When a fire truck is pumping, the fan clutch gets locked on, the transmission gets put in direct drive and the full output of the main drive shaft goes into the pump.
This makes an awful lot of noise when you are standing 2 feet away from a truck motor that may be going half to nearly full RPM and power along with turbo boost, fan noise and wind, gears whining, etc. It is like standing next to a truck on a dyno test.
The old man said they were afraid of all the noise because nobody rides down the freeway at 60 mph with their car windows open next to a semi any more, and knows how loud it is.
When a fire truck is pumping, the fan clutch gets locked on, the transmission gets put in direct drive and the full output of the main drive shaft goes into the pump.
This makes an awful lot of noise when you are standing 2 feet away from a truck motor that may be going half to nearly full RPM and power along with turbo boost, fan noise and wind, gears whining, etc. It is like standing next to a truck on a dyno test.
The old man said they were afraid of all the noise because nobody rides down the freeway at 60 mph with their car windows open next to a semi any more, and knows how loud it is.