"gregz" wrote in message
...
John-Del wrote:
On Jun 24, 4:06 pm, "(PeteCresswell)" wrote:



They're *really* loud.... as in you don't want tb within even
miles of the noise - especially, I'd think, on wide-open country
without a lot of trees/hills to mitigate it.



Well, they're not THAT loud. In hilly residential areas they frown
upon them. Around here, truckers also use them instead of the
standard brakes to scare the beejeezus out of people who cut in front
of them or otherwise drive like jerks. Drivers know a horn is
intentionally applied, but don't understand the horrible noise a truck
on the jake bearing down on them is making.

John

http://www.youtube.com/watch?v=qocMoTOVn6Q

Greg


OK. I guess that puts it in perspective. So, was the driver's foot off the
pedal all the way down that incline, after he'd switched on the Jake brake ?
Why did the sound drop right down at the bottom, before the switch was
disengaged ? Is it because the engine is no longer in over-run condition, or
because accelerator has been reapplied ?

Arfa