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Kenworth or Peterbilt- who makes the better locomotive?

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Posted by retvpeng on Monday, August 31, 2015 6:09 PM

The older Detroits were 2 cycle engines (as opposite to their current 4 stroke) that would run in either direction...sometime much to the chagrin of a truck driver. Exhaust smoke would then eminate from the externally mounted air cleaner while combustion air was drawn in through the exhaust pipe.. More than one driver has stalled out at slow speed only to find the engine running backwards.

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Posted by tree68 on Monday, August 31, 2015 7:08 PM

Seems like I've read/heard that some marine Diesels (U-boats?) ran in either direction.  Probably saves the hassle (and potential point of failure) of a reversing box.

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Posted by vbeach on Monday, August 31, 2015 7:52 PM

My first car was a 68 Buick Special with a 250cu straight six and three speed manual transmission and that was the first year for smog control.  Sometimes, when I would turn it off, it would start dieseling and to get it to stop, I would let the clutch out in first gear with the switch off, funny thing was that it would then back up in first until it stalled.

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Posted by M636C on Monday, August 31, 2015 8:52 PM
tree68 wrote the following post 1 hours ago:

Seems like I've read/heard that some marine Diesels (U-boats?) ran in either direction.  Probably saves the hassle (and potential point of failure) of a reversing box.

Most of the large two stroke marine diesel engines, which run at speeds between 100 and 200 rpm are reversible.
 
They are designed for this, and often have a sliding camshaft that has to be moved between forward and reverse directions.
 
The engine is stopped, the camshaft moved and the engine is restatred in the opposite direction.
 
Moving the cam adjusts the timing so that the inlet and exhaust continue to operate in the correct sequence. As two strokes, they often have inlet ports rather than valves, but the inlet remains the inlet and the exhaust remains the exhaust in either direction.
 
Fortunately, large container ships and similar do not change power setting or direction very often and usually dock with tug assistance.
 
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Posted by Big Bill on Monday, August 31, 2015 9:03 PM

Not that I am doubting the veracity of anything you say, but speaking as a mechanic: how, exactly, does this work?

Without somehow changing one set of cams for another, running the engine backwards would send the exhause out the intake; quite the trick, even for a diesel.

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Posted by droughtquake on Monday, August 31, 2015 10:40 PM

rvos1979
Reverser box installed behind the main transmission, can then go just as fast in reverse..........

Last I heard, Western Star, owned by Freightliner, now builds their trucks in North Carolina. Peterbilt, a Paccar brand, is the other one I have seen Brandt use. Cummins seems to be the favorite engine used in either..........
 

And Daimler (Mercedes-Benz & Smart Car) owns Freightliner. They kept Freightliner when they got rid of Chrysler. Daimler also bought Ford's heavy truck division and renamed it Sterling. Sterling was discontinued in 2009.

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Posted by tree68 on Tuesday, September 1, 2015 12:30 AM

Big Bill
Without somehow changing one set of cams for another,

Based on this site, that's essentially what happens:  http://www.brighthubengineering.com/marine-engines-machinery/60584-reversing-of-marine-engines/

 

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Posted by M636C on Tuesday, September 1, 2015 12:42 AM
Big Bill wrote the following post 3 hours ago:

Not that I am doubting the veracity of anything you say, but speaking as a mechanic: how, exactly, does this work?

Without somehow changing one set of cams for another, running the engine backwards would send the exhause out the intake; quite the trick, even for a diesel.

I should have said that there were two sets of cams on the camshaft, one for each direction, and sliding the camshaft along its axis brings the correct set of cams into place.

I knew what I was trying to say, but didn't give the full picture: sorry...

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Posted by trains577 on Tuesday, September 1, 2015 4:00 AM

I guess most of you don't know but both Kenworth and Peterbilt are own by the same group Paccar so both are the same but for a few changes to the body, I know I have driven both and own a Peterbilt and have over 4 million miles driving

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Posted by Wizlish on Tuesday, September 1, 2015 4:56 AM

trains577
I guess most of you don't know but both Kenworth and Peterbilt are own by the same group Paccar so both are the same but for a few changes to the body, I know I have driven both and own a Peterbilt and have over 4 million miles driving

Midget said this back on the 26th and it was discussed then.

Freightliner 'builds the better locomotive'.  (Just as they build the better Class VIII, but I digress...)

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Posted by Robert Holman on Tuesday, September 1, 2015 10:49 AM
Western Star, once built in British Columbia, is now wholly owned by Daimler Chrysler Corp., who owns Freightliner Corp..... the WS is built in Portland Oregon in the old Freightliner shops. Freightliner is now built in Mexico....
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Posted by loco6625 on Tuesday, September 1, 2015 2:29 PM

Brandt did build build a track mobile early on with a rotating boom to load or off load ties into open gondolas. The new kid in the block is the Trackmobile Titan. Pictures and specks are in the October,2015 Trains Magazine, page 18. It is now strictley used for in yard switching. It has many options. Cummins QSB6. turbocharged is the main power. Goodyear tires for in yard road travel, and are mated hydraulic with 27-inch AAR standard rail wheels that have gear-like extensions of the rail wheels. Proprietary, fully compatible couplers and angle cocks controlled by operator from the cab. Max. No of freight cars hauled -60. Typical No -25.

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Posted by mikeyuhas on Wednesday, September 2, 2015 2:30 PM

A friend refers to Brandt Power Units as "choo choo trucks."

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Posted by carnej1 on Thursday, September 3, 2015 11:38 AM

466lex

 

 
Paul of Covington

   I'm curious: is traction supplied by the rubber tires on the rails or through steel wheels?

 

 

 

Through the tires.  Descriptive video:  https://player.vimeo.com/video/75325768

 

 

 Power via the rubber tires contacting the railhead is common in North America but in other parts of the world powered rail wheels are also used on hi-rail vehicles:

http://www.windhoff.de/e/index_ft.htm

 One class of vehicles we see in N.A that often (but not always) use powered rail wheels are rail car movers like Trackmobiles...

 But to address the O.P's question: While I'm not in the trucking business I note that Kenworth seems to have the greater market share in heavy duty applications like construction , logging, oilfield service ect.. so that may explain why they are a preferred manufacturer (along with Western Star)for the Brandt conversions. O.C, Peterbilt is a sister company under the same ownership so I'm sure they have some product overlap but they seem to focus more on longhaul OTR trucks..

"I Often Dream of Trains"-From the Album of the Same Name by Robyn Hitchcock

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Posted by Wizlish on Friday, September 4, 2015 2:16 PM

Just seen over on RyPN:

http://teespring.com/thats-cute-norfolksouthern?i=PPEemployers#pid=2&cid=2397&sid=front

I only wish I had the standing to wear one of these.

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Posted by tdmidget on Friday, September 4, 2015 10:51 PM

carnej1

You still don't seem to understand that a kenworth and a peterbuilt differ only in ornamentation. Traditionally the real work truck was a Mack, now just a warmed over Volvo. Since the aquisition of Mack by Volvo there are no manufacturers of clas 7 and 8 trucks in the USA, only assemblers using engines, gearboxes, suspensions and final drives from a very few manufacturers. Different badges, front caps, and trim do not a different truck make.

 

 
466lex

 

 
Paul of Covington

   I'm curious: is traction supplied by the rubber tires on the rails or through steel wheels?

 

 

 

Through the tires.  Descriptive video:  https://player.vimeo.com/video/75325768

 

 

 

 

 Power via the rubber tires contacting the railhead is common in North America but in other parts of the world powered rail wheels are also used on hi-rail vehicles:

http://www.windhoff.de/e/index_ft.htm

 One class of vehicles we see in N.A that often (but not always) use powered rail wheels are rail car movers like Trackmobiles...

 But to address the O.P's question: While I'm not in the trucking business I note that Kenworth seems to have the greater market share in heavy duty applications like construction , logging, oilfield service ect.. so that may explain why they are a preferred manufacturer (along with Western Star)for the Brandt conversions. O.C, Peterbilt is a sister company under the same ownership so I'm sure they have some product overlap but they seem to focus more on longhaul OTR trucks..

 

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Posted by droughtquake on Saturday, September 5, 2015 12:01 AM

tdmidget
carnej1 You still don't seem to understand that a kenworth and a peterbuilt differ only in ornamentation. Traditionally the real work truck was a Mack, now just a warmed over Volvo. Since the aquisition of Mack by Volvo there are no manufacturers of clas 7 and 8 trucks in the USA, only assemblers using engines, gearboxes, suspensions and final drives from a very few manufacturers. Different badges, front caps, and trim do not a different truck make.

Volvo-White-GMC-Mack?  ;-)

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Posted by carnej1 on Tuesday, September 8, 2015 11:34 AM

tdmidget

 

 
carnej1

You still don't seem to understand that a kenworth and a peterbuilt differ only in ornamentation. Traditionally the real work truck was a Mack, now just a warmed over Volvo. Since the aquisition of Mack by Volvo there are no manufacturers of clas 7 and 8 trucks in the USA, only assemblers using engines, gearboxes, suspensions and final drives from a very few manufacturers. Different badges, front caps, and trim do not a different truck make.

 

 
466lex

 

 
Paul of Covington

   I'm curious: is traction supplied by the rubber tires on the rails or through steel wheels?

 

 

 

Through the tires.  Descriptive video:  https://player.vimeo.com/video/75325768

 

 

 

 

 Power via the rubber tires contacting the railhead is common in North America but in other parts of the world powered rail wheels are also used on hi-rail vehicles:

http://www.windhoff.de/e/index_ft.htm

 One class of vehicles we see in N.A that often (but not always) use powered rail wheels are rail car movers like Trackmobiles...

 But to address the O.P's question: While I'm not in the trucking business I note that Kenworth seems to have the greater market share in heavy duty applications like construction , logging, oilfield service ect.. so that may explain why they are a preferred manufacturer (along with Western Star)for the Brandt conversions. O.C, Peterbilt is a sister company under the same ownership so I'm sure they have some product overlap but they seem to focus more on longhaul OTR trucks..

 

 

 

 

 Correct, because I am not employed in the trucking industry and this is not a trucking forum..

 My statement about Kenworths being common vocational trucks is accurate, confirmed by passing on my commute the 12 wheeler dumptrucks common in New England (which used to be dominated by Mack and Autocar,back when they only needed 10 wheels (3 axles)) and looking at logging videos from the Northwest.

 My impression is thatPacar seems to promote the Kenworth line over Peterbilt for construction,logging, oilfield type vocational service..

Brandt, as pointed out by other posters, is using Freightliner chassis (basically identical to Western Star, correct?) now anyway...

 

"I Often Dream of Trains"-From the Album of the Same Name by Robyn Hitchcock

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