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Hopper loads - On Members Workbenches. - More Practical Help - Your Model Railway Club
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 Posted: Mon Jan 16th, 2012 03:45 am
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Sol
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I have 19 of these to provide removable loads


(Yes I know, I did not use the macro mode !!)

Made up a basic balsa former - the brad is to allow a magnet to lift them out.




a bit of shaping & then using kitty litter and topped with large grey gravel - next one will be better ( I hope)



using cling wrap around the insides, PVA'd, thick & runny, this.



when it is dry ( tomorrow) , lift it out & see if it worked.



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 Posted: Mon Jan 16th, 2012 06:46 am
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ddolfelin
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Make sure the kitty doesn't get to it, Ron.



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 Posted: Mon Jan 16th, 2012 11:32 am
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Wayne Williams
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Ron, is the nail close enough to the surface for a magnet to work? It looks rather low, but you know how depth looks in these photos!

Wayne



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 Posted: Mon Jan 16th, 2012 11:46 am
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Sol
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Wayne, I will test in it about 7 hours after all the PVA is dry.



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 Posted: Mon Jan 16th, 2012 01:06 pm
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Petermac
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I've seen that idea before Sol - maybe even from you !!  It's a great idea and apparently works well.  I like the idea of the kitty litter :thumbs  It could be some kind of ore.

I'll look in the index but you also did a thread on wagon weights some time ago - things like so many ozs per inch of wagon I think ......  Do you remember where ?  I'll need to weight some of mine.



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 Posted: Mon Jan 16th, 2012 08:03 pm
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Sol
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Peter - wagon weights, use either the NMRA standard
http://www.nmra.org/standards/sandrp/rp-20_1.html
or from Australia which considers 4 wheelers more
http://www.amra.asn.au/massstandard.pdf



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 Posted: Tue Jan 17th, 2012 12:41 am
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Sol
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As I half expected, the first one is a bit of a flop. Using the grey gravel added too much weight for the magnet to access the small nail & lift it up so I have added a screw which can be painted & lightly dusted.




the reason I added the grey gravel was laziness on my part - I did not want to spend time in crushing the kitty liiter smaller - see the large lumps




I will just have  spend some time at the crushing plant & not be lazy.

Using the watery PVA - not sure on that.

now to start No 2 but I am not going outside now to do the thumping of the kitty litter, in the shade nearly 38C !



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 Posted: Tue Jan 17th, 2012 02:59 am
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Sol
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Version 2 - like a lift out tray, still some padding to be glued in before I use kitty litter - crushed of course!




 



be easier if I ran two sets of trains - one empty & one full but the hiccup is that the hopper gets loaded by the driver as he slowly backs the hoppers into the gravel loader !



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 Posted: Wed Jan 18th, 2012 06:17 am
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Sol
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I decided not to use Kitty litter but model gravel




glued in a thin layer over tape to give contours for the card layers of packing. Initially I had two metal screws but with the layer of gravel, NBG, so I tried a rare earth magnet 3mm x 3mm & it works a treat to lift them out.



 

So now to mass produce 18 more loads.



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 Posted: Wed Jan 18th, 2012 06:32 am
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ddolfelin
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A lot of work there, Ron.
I'm sure it will look fine.
Will you paint the loads?



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 Posted: Wed Jan 18th, 2012 06:45 am
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Iansa
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38 degrees in the shade!

 Thats easy, don't work in the shade. :roll:

 Ian



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 Posted: Wed Jan 18th, 2012 06:52 am
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MaxSouthOz
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Here are some I did, Sol.  You might be able to use some ideas.

http://yourmodelrailway.net/view_topic.php?id=8903&forum_id=52&highlight=coal+loads



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 Posted: Wed Jan 18th, 2012 07:02 am
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Sol
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ddolfelin wrote: Will you paint the loads?

No Peter, leave them white like our limestone train that did go  past my place daily ( when it gets running again hopefuly April)

http://farm7.static.flickr.com/6012/5974417294_cc779fb428.jpg

 

 

Max, I will give the MDF a try . 

   And Ian, I try not to work any time :roll:



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 Posted: Tue Jan 24th, 2012 12:23 am
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Sol
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A long 4 wheel open with a load and the basic base before I  coat it with PVA & press the stone into it. A squirt of matt varnish locks it all in. The lifting out screw is just hidden.




 



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 Posted: Tue Jan 24th, 2012 08:21 am
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ddolfelin
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If limestone there is a good weathering opportunity there.
Talcum powder?
I prefer Freesia myself.



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 Posted: Tue Jan 24th, 2012 11:54 am
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xdford
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At our club (Melton MRC in Australia) we use some foam that was meant for low density packing from around a fridge I think and painted it black to represent coal. It is an interference fit which means it bunches up slightly when patted into the gondola, then no two loads are alike. The weight addition is minimal but with four wheelers I take it that extra weight is a bonus for you?

There is an idea for removal that I will draw later!

Regards

Trevor

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 Posted: Tue Jan 24th, 2012 01:11 pm
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Sol
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The loads have to be easy to fit as the hoppers, etc  are planned to be loaded by the operator as he slowly drives the empty through the gravel loader. Unloading will be done by me after the operating session is finished.



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 Posted: Tue Jan 24th, 2012 08:16 pm
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xdford
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Apologies Ron, I didn't realise you intended to do "live loading" - The Melton situation is that the trains will be through in one direction full, empty in the other and we can change the loads between sessions if necessary.

Ultimately we intended to have different industries fitting corners with lift outs to change the theme on the layout ala Paul Hawden's layout shown on http://www.xdford.digitalzones.com/exhibitions02.htm

Very handy to have the variety...

Regards

Trevor

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 Posted: Tue Jan 24th, 2012 09:58 pm
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Sol
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Trevor, "Live loadings" are good but a PITA if the operator is a fumble fingered gent.

Weathering, that loader will need lots of it around on the ground as well as hoppers, etc



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 Posted: Tue Jan 24th, 2012 10:39 pm
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Sol
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A small stone/gravel train ready to leave the loading hopper at Watchit.





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