6/23/2004: Biggest truck - Page 2

lumberjim · 06-23-2004, 05:41 PM

Boy, this thread brought out the lurkers.

jaguar · 06-23-2004, 05:41 PM

Why the hell would you weigh it??
How?? Some kind of pneumatic pressue system? (random guess)

lumberjim · 06-23-2004, 05:46 PM

they measure it's gravitational pull, and extrapolate it.

jaguar · 06-23-2004, 05:49 PM

Is it me or does the guy standing next to it look a bit like that photo of bruce?

Must be what he uses to help move the doodad collection around.

zippyt · 06-23-2004, 06:21 PM

Jag said Why the hell would you weigh it??

To know how much product their is in the truck , most bulk product ( rock, steel scrap , etc,,,,) is bought and sold by the ton .

How??

Here is one way http://www.mt.com/mt/product_detail/...y=I3Mjg4NjM1MD

I installed the first one of these ever and walked it thru the government testing on site . Have you ever seen 400,000 lbs of known and un known weight ?? I have pics if you would like .

Some kind of pneumatic pressue system? (random guess)

No with strain guage load cells . Pnuematics wouldn't work because air expands and contracts to much , no to mention the water that would accumulate in the system .
How ever there are scales that use hydrostatic systems , great for explosive areas and for large weird applications out side were lighting resistance is a consideration .

Cyber Wolf · 06-23-2004, 09:05 PM

Okay, it's a good thing these things aren't road vehicles. I'd imagine they'd need a full runway to stop the bloody thing if it ever got up to its projected 40 mph.

BrianR · 06-23-2004, 10:47 PM

They DO make transmissions and driveshafts that big...and bigger.

These items are installed on all current Navy ships. The shafts are on the order of two feet in diameter and the MRG's (Main Reduction Gears) handle the output of one or two LM2500 gas turbine engines putting out up to 20,000 bhp each. AR AR AR!

Brian

xoxoxoBruce · 06-23-2004, 11:50 PM

This 109,000 Horsepower engine, also uses a single driveshaft, but only 102 RPM.

CzinZumerzet · 06-24-2004, 06:52 AM

I live alongside miles of beach and dunes and would really like one of these just for one day, just for fooling around. Oh yes.

Griff · 06-24-2004, 08:49 AM

Quote:

Originally posted by BrianR
They DO make transmissions and driveshafts that big...and bigger.

Yep. You've got to consider the sheer weight and expense of those components and the ease of running a cable to wheels instead of designing around shafts, wasting space.. It'd probably be a lot lighter and cheaper to go the electric motor direction.

Troubleshooter · 06-24-2004, 09:06 AM

The 688 class submarine I was on has TWO 30,000 hp high pressure steam turbines attached to a transmission the size of a storage shed.

The transmission turns one shaft with a 17' seven bladed screw.

chrisinhouston · 06-24-2004, 09:29 AM

Big loads for big trucks have there share of problems

linknoid · 06-24-2004, 10:03 AM

I think I must have passed a semi carrying tires for one of those trucks last month. They were sitting on a flatbed on their sides, and the tires took up a lane and a half. I wondered what they were for.

Clock Man · 06-24-2004, 10:35 AM

I lived in Indiana where they do a lot of coal mining. These trucks have been known to kill. YellowBolt, you can't see where the driver sits and he can't see where you sit.

tweek · 06-24-2004, 11:25 AM

Jackie Chan made good use of this vehicle in Mr Nice Guy (American release title).

06-23-2004, 05:41 PM	#16
lumberjim I can hear my ears Join Date: Oct 2003 Posts: 25,571	Boy, this thread brought out the lurkers. __________________ This body holding me reminds me of my own mortality Embrace this moment, remember We are eternal, all this pain is an illusion ~MJKeenan

06-23-2004, 05:41 PM	#17
jaguar whig Join Date: Apr 2001 Posts: 5,075	Why the hell would you weigh it?? How?? Some kind of pneumatic pressue system? (random guess) __________________ Good friends, good books and a sleepy conscience: this is the ideal life. - Twain

06-23-2004, 05:46 PM	#18
lumberjim I can hear my ears Join Date: Oct 2003 Posts: 25,571	they measure it's gravitational pull, and extrapolate it. __________________ This body holding me reminds me of my own mortality Embrace this moment, remember We are eternal, all this pain is an illusion ~MJKeenan

06-23-2004, 05:49 PM	#19
jaguar whig Join Date: Apr 2001 Posts: 5,075	Is it me or does the guy standing next to it look a bit like that photo of bruce? Must be what he uses to help move the doodad collection around. __________________ Good friends, good books and a sleepy conscience: this is the ideal life. - Twain

06-23-2004, 06:21 PM	#20
zippyt LONG LIVE KING ZIPPY! per Feetz Join Date: Mar 2003 Location: Arkansas Posts: 7,661	Jag said Why the hell would you weigh it?? To know how much product their is in the truck , most bulk product ( rock, steel scrap , etc,,,,) is bought and sold by the ton . How?? Here is one way http://www.mt.com/mt/product_detail/...y=I3Mjg4NjM1MD I installed the first one of these ever and walked it thru the government testing on site . Have you ever seen 400,000 lbs of known and un known weight ?? I have pics if you would like . Some kind of pneumatic pressue system? (random guess) No with strain guage load cells . Pnuematics wouldn't work because air expands and contracts to much , no to mention the water that would accumulate in the system . How ever there are scales that use hydrostatic systems , great for explosive areas and for large weird applications out side were lighting resistance is a consideration . __________________ "Success is getting what you want. Happiness is wanting what you get. " Brother Dave Gardner

06-23-2004, 09:05 PM	#21
Cyber Wolf As stable as a ring of PU-239 Join Date: Jun 2004 Location: On a huge rock covered in water, highly advanced moss and 7 billion parasites Posts: 1,264	Okay, it's a good thing these things aren't road vehicles. I'd imagine they'd need a full runway to stop the bloody thing if it ever got up to its projected 40 mph. __________________ "I don't see what's so triffic about creating people as people and then getting' upset 'cos they act like people." ~Adam Young, Good Omens "I don't see why it matters what is written. Not when it's about people. It can always be crossed out." ~Adam Young, Good Omens

06-23-2004, 10:47 PM	#22
BrianR Cleverly disguised as a responsible adult Join Date: Jan 2001 Location: Dallas, TX Posts: 3,338	They DO make transmissions and driveshafts that big...and bigger. These items are installed on all current Navy ships. The shafts are on the order of two feet in diameter and the MRG's (Main Reduction Gears) handle the output of one or two LM2500 gas turbine engines putting out up to 20,000 bhp each. AR AR AR! Brian __________________ Never be afraid to tell the world who you are. -- Anonymous

06-23-2004, 11:50 PM	#23
xoxoxoBruce The future is unwritten Join Date: Oct 2002 Posts: 71,105	This 109,000 Horsepower engine, also uses a single driveshaft, but only 102 RPM. __________________ The descent of man ~ Nixon, Friedman, Reagan, Trump.

06-24-2004, 06:52 AM	#24
CzinZumerzet .....short for Caz Join Date: Jan 2004 Location: The West Coast of England Posts: 358	I live alongside miles of beach and dunes and would really like one of these just for one day, just for fooling around. Oh yes. __________________ ..down by the zea zippin' zider

06-24-2004, 09:06 AM	#26
Troubleshooter The urban Jane Goodall Join Date: Jan 2004 Location: Florida Posts: 3,012	The 688 class submarine I was on has TWO 30,000 hp high pressure steam turbines attached to a transmission the size of a storage shed. The transmission turns one shaft with a 17' seven bladed screw. __________________ I have gained this from philosophy: that I do without being commanded what others do only from fear of the law. - Aristotle

06-24-2004, 09:29 AM	#27
chrisinhouston Professor Join Date: Sep 2001 Location: Houston TX Posts: 1,857	Big loads for big trucks have there share of problems Attached Images

06-24-2004, 10:03 AM	#28
linknoid Superior Inhabitant Join Date: Sep 2002 Posts: 74	I think I must have passed a semi carrying tires for one of those trucks last month. They were sitting on a flatbed on their sides, and the tires took up a lane and a half. I wondered what they were for.

06-24-2004, 10:35 AM	#29
Clock Man Rapscallion Join Date: Apr 2004 Posts: 5	I lived in Indiana where they do a lot of coal mining. These trucks have been known to kill. YellowBolt, you can't see where the driver sits and he can't see where you sit.

06-24-2004, 11:25 AM	#30
tweek Disorderly Disciplinarian Join Date: Jun 2002 Posts: 21	Jackie Chan Jackie Chan made good use of this vehicle in Mr Nice Guy (American release title).

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