Skip to main content

Replies sorted oldest to newest

@RickO posted:

LOL! I didn't notice the handrail either , but yeah I was talking about tht capacity markings.

Also, there is probably marginally more dust shown on the top picture, so maybe it's been on the layout a little longer.

(All in good fun regarding "noticing things", not seriously critiquing the dust! I've got more than my share so I should never throw stones in that glass house!! )

-Dave

Hey guys, nice discussion. The makers were paying attention to detail that I would have missed.  BTY the lower "hand rail" is an attempt to create what we call where I come from the "cut lever" for uncoupling.  Although on most models like the ones in the picture  some of the connecting details to the coupler are missing due to the  the big auto couplers on most O guage engines.  Can't have it all ! 

I  like the "scale" dust....some folks pay a lot of money to get that kind of weathering. 

Thanks for sharing.

18,000 gallons of water weighs approx 87 tons and 14,000 weighs approx 67 tons if water weighs approx 9.71 lbs per gallon.

There are several weights for water listed out there, but all would overload the rated capacities with no thought given to the coal load.

I know nothing of which I speak, so just commenting on what I read.

Last edited by GVDobler
@GVDobler posted:

18,000 gallons of water weighs approx 87 tons and 14,000 weighs approx 67 tons if water weighs approx 9.71 lbs per gallon.

The weight per gallon of U.S. water is 8.34 pounds. You provided the weight of an "imperial gallon of water".

There are several weights for water listed out there,

Really? I have only seen one weight per gallon of water IN THE United States, i.e. 8.34 pounds.

but all would overload the rated capacities with no thought given to the coal load.

That is because you used the incorrect weight for a gallon of water in the U.S..

I know nothing of which I speak, so just commenting on what I read.

OK, we'll go with that.

 

@Hot Water posted:

 

but all would overload the rated capacities with no thought given to the coal load.

That is because you used the incorrect weight for a gallon of water in the U.S..

There needs to mathematically be a lot more more to it than that, if the assumption that the weight of gallons of water specified needs to fit within the number of tons specified (it may not, I'm just doing the math here for the assumption everyone else is making )  The error of 9.71 instead of 8.35 alone does not work out to make the situation nice and clean and perfect.

Using a calculator for gallons to pounds shows 18,000 gallons is 150,217 pounds.  Using the pounds to tons calculator (or just dividing by 2000 ) shows that is 75.1085 tons.  That's a lot more than the 46 tons as printed on the tender (all top picture numbers, of course).

{EDIT} Doing a little digging, it seems the premise is invalid and it's a ratio of coal to water shown.  This entry on a site I found claims that a common ratio was 14 tons of coal per 10,000 gallons of water.  But it then says many NYC tenders had higher coal to water ratios since they picked up water while moving from track pans.  So if we use the 18,000 gallons and multiply by 14 tons/10,000 gallons, we would have 25.2 tons.  If we understand that the ratio is actually something higher than 14tons /10,000 gallons, the math is starting to make sense.

-Dave

 

Last edited by Dave45681
@Dave45681 posted:

There needs to mathematically be a lot more more to it than that, if the assumption that the weight of gallons of water specified needs to fit within the number of tons specified (it may not, I'm just doing the math here for the assumption everyone else is making )  The error of 9.71 instead of 8.35 alone does not work out to make the situation nice and clean and perfect.

Using a calculator for gallons to pounds shows 18,000 gallons is 150,217 pounds.  Using the pounds to tons calculator (or just dividing by 2000 ) shows that is 75.1085 tons.  That's a lot more than the 46 tons as printed on the tender (all top picture numbers, of course).

Please note that that "46 tons" printed on the rear of the tender, (and any other tender of a coal burning steam locomotive) is for the COAL CAPACITY! It has NOTHING to do with the weight of the water.

-Dave

 

 

@Hot Water posted:

Except,,,,,,,,,,that is NOT a "handrail".

Gosh no - and I always heard it referred to as a "cut bar". (But then, if it's only a $1200 "toy", we shouldn't object even if you want to call it "that curly thingy". After all, nothing really matters.)

---------------

And, being a champion of "natural weathering" (my layout dust is just the beginning), if our model's materials and innards could take it, I would leave every loco and car I purchase outside in the weather for a year (while moving and/or rotating wheels every month) so they would look good when finally appearing on the layout. Of course, a cage would be used to keep the birds and squirrels from leaving most of their possible decorations on the piece....

Last edited by D500

According to the world atlas, I summit the following:

" The answer is simple; a gallon of water weighs about 8.3 pounds. The imperial gallon of water is defined as 10.02 pounds at its maximum density while the weight of US dry gallon of water is defined as 9.71 pounds. However, the answer comes with a caveat. The weight per gallon of water fluctuates with temperature."

I was using the US dry gallon weight. Seems odd they would list the coal capacity of the tender and ignore something as heavy as water. Not to be confused with "heavy" water.

PS: I'm used to airplanes and gross weight figures mean airplane, gas, people, bags etc., all lumped together.

 

Last edited by GVDobler
@D500 posted:

Gosh no - and I always heard it referred to as a "cut bar". (But then, if it's only a $1200 "toy", we shouldn't object even if you want to call it "that curly thingy". After all, nothing really matters.)

---------------

Correction made, Pete. Its is "somewhat" deceptive as the connecting details are missing as mentioned by Earl.

On a side note. The 5426 tender is from the legacy ESE with the standard tender offering a few years back. The 5433 is from well... you know. Its probably no surprise that the cut bar is correctly installed on it and it doesn't even move.

I had to bend the cut bar on the 5426 to get both ends to sit flush as well as reposition it, go figure.

@third rail posted:

Amazing.  The ton rating only refers to the amount of coal a tender can carry. It has nothing to do with the weight of water.

Right. For example, the fully loaded NYC PT design tender held over 121 tons of supplies, i.e. 18,000 gals of water plus 46 tons of coal. That doesn't include the empty weight of that massive tender, which when fully loaded weighed more than the 4-6-4 Hudson ahead of it. The point was, having to stop for fuel, i.e. coal only once (Cleveland, OH) between Harmon, NY and Chicago, since water could, and was, taken at track speed enroute from the between-the-rails track pans.

Look at some real tenders and you will see.

Right again.

The manufacturer put any rating on the tenders without regard to being prototypical. 

 

I learned water weighed 8.34 pounds per gallon in my advanced high school industrial chemistry class way back in 1959. I also scored well on the Comprehensive Chemistry Regents Exam to get a diploma from Brooklyn Technical High School. Having been on renal hemodialysis for the last fifteen years, I have successfully calculated my fluid gain between treatments using the 8.34 pounds per gallon standard. Nuff said!

Last edited by Tinplate Art

Add Reply

Post
×
×
×
×
Link copied to your clipboard.
×
×