rrinkerOh come now, Detroits don;t sound that bad. Back when I was in my teens, I helped my neighbor ovr the summer with his trucking business.
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Two stroke Detroit Diesels in trucks were almost always turbocharged, which changed the engine noise quite a bit. Most people also never hear a truck engine operate under full load in the open, unless you run the vehicle on a dynomometer. Over the road truck cabs are pretty well insulated for driver comfort compared to industrial equipment.
In industrial applications these engines were almost always naturally aspirated, and industrial engines also have a duty cycle that is under full load nearly all the time. Most trucks only peak at full rated output during accelleration or hard grade pulls.
The term "naturally aspirated" is confusing for Detroit Diesels because in "naturally aspirated" configuration they still required a roots type blower to supply air pressure to the air box in the block.
Without the turbocharger dampening the intake and exhaust tone caused by the gear driven blower, they make a screaming noise under load that sounds like a million plates of glass breaking at once.
United States Sugar in Clewiston ran hundreds of M.R.S. tractors with 4-71 naturally asprirated engines into the 1990s. When several of these would run by towing "3 up" loaded cane bins, you would get a headache that would last for days.
Yes, they did sound that bad, and that Model 40 was one of the worst!
-Kevin
Living the dream.
Oh come now, Detroits don;t sound that bad. Back when I was in my teens, I helped my neighbor ovr the summer with his trucking business. He bought an old Freightliner cabover that had a Detroit in it, I remember when we first got intot he motor to clean everything up, the rather odd arrangment of valves threw him, but it was actually through my railroad hobby I knew it was a 2 stroke motor and how it worked. All the other trucks in his fleet has Cummins engines.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
NVSRRI had read a few years ago that there was one in florida still in use.
I don't know if it is the same one you are referring to, but there was a Model 40 running in a phosphate mine north of Ocala, FL as late as 1989.
I worked for General Engine & Equipment Co. at the time, the Industrial Distributor for 2 cycle Detroit Diesels on the West Coast of Florida. This was just before Penske bought Detroit Diesel, and I went to work for Cummins.
Anyway, that little locomotive was a special kind of miserable. The noise that 2 naturally apsirated 6-71 diesels make is something very few people will ever be exposed to again. One of the benefits of going to work at Cummins was the fact I would never need to see that thing again. No recording of a 6-71 (or worse, a 6V-53) will ever sound as aggravating as being there in person.
I don't know how they ever kept an employee to operate it.
There is a dormant model 40 at the Martindale Feed Mill in Valley View, TX, visible off I-45 (exit 487). Its at the far south end of the spur. You can even see it on the Google satellite view.
Map
Dave H. Painted side goes up. My website : wnbranch.com
I had read a few years ago that there was one in florida still in use. Might not be the case now.
Wolfie
A pessimist sees a dark tunnel
An optimist sees the light at the end of the tunnel
A realist sees a frieght train
An engineer sees three idiots standing on the tracks stairing blankly in space
That actually answers my questions. Thank you for your assistance.
Check this out:
https://en.wikipedia.org/wiki/EMD_Model_40
It's a place to start.
Dave, hon30critter, could probably tell you all about them.
Mike.
My You Tube
Yet another one for the forums: When were the EMD Model 40s first released? A wild hare struck me about buying one and just curious if it would be used in the era I model. As usual Thank you for any assistance that can be provided.