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Top of a tank and a wagon turntable


Fen End Pit

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First up, here is a picture of what I've done with the top of the water tank. in the absence of pictures or drawings I'm hoping I've got something which is plausible. I stuck some plastruct angle inside the tank and then tried to model some tie-bars to hold it all together. The water is clear acrylic with the bottom painted black.

 

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Next is a little experiment on one of those things which is just so much easier to make when you have something that cuts accurately! I drew up this wagon turntable and cut it as 2 layers of 1.5mm MDF stuck onto a base of 3mm MDF. The rails are just short lengths of phosphor bronze rail stuck in place. The fact that the slots are accurate means that it is easy just to get the gauge and alignment right.

 

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A wagon rolls on it and it turns very easily.

 

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I'm half wondering about cutting a few of these and seeing if anyone would like to buy them off me. I'd have to modify the drawing to go from 18.83 to EM or OO but that should be straight-forward. I'm thinking it will be quite easy to drive with a servo to make it turn, I've not made any attempt to power the rails as I don't think locos would have past over it.

 

David

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Hi David,

 

I could do with a 20ft version for the two turntables at the rear of Barrow Road. These gave access to the Workshop which was at right angles to the shed through road and was used for ex MR 4F, 3F and other locos with a wheel base less than 20ft. Locos were turned and moved into the Workshop using a pinch bar, whilst they were removed using a cable attached to a loco on the shed road which went via a capstan alongside the turntable.

 

Robin

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It's a bit too late for you, but the Black country Blues have picture of the inner strengthening in a steel water tower at post #145 in:-http://www.rmweb.co.uk/community/index.php?/topic/67294-black-country-blues-blackrat-does-a-water-tower/page-6#entry1005013

That is impressive. Obviously my tank was much smaller and constructed as a single welded unit rather out of lots of individual panels. I'm half wondering if the top should actually have some kind of boarding over most of it giving that I intend it to be sitting in front of a bank of trees.

David

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Hi David,

 

I've reently purchased a laser and I am still practicing what I can do and cut. I also use TurboCad and was wondering how you created your brick walls. The way I have done it seems extremely long winded by creating each brick course at a time. Is there an easier way as your brickwork looks very good.

 

Kevin

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Hi David,

 

I've recently purchased a laser and I am still practicing what I can do and cut. I also use TurboCad and was wondering how you created your brick walls. The way I have done it seems extremely long winded by creating each brick course at a time. Is there an easier way as your brickwork looks very good.

 

Kevin

 

Hi Kevin

yes, that is basically what I do, but it isn't all that long winded. I'm working in 4mm so I use 3mm for a stretcher and 1.5 mm for a header and 1mm for each course. Modify-Array is your friend here. You can draw a line for the horizontal joints and then use modify-array-linear x=0,y=1,sets=X to make X horizonal courses. Then you draw a 1mm line and use the same command to make a copy 3mm and then 1.5 mm away. Copy the resulting two items with the same command X=4.5, Y=0, sets=X to make a complete brick course. Do roughly the same thing for the next course, just gets the headers and stretches spaced correctly. The finally take both complete courses and use modify-array and use X=0,Y=2,sets=X to copy all the vertical lines up through the whole wall.

That just leaves you to sort the closures out around the doors/windows by usually moving a header by .75mm.

 

One word of warning, my laser cutter is too dim to spot that you have drawn two cut lines in the same place. This means if the drawing has two lines designed to just engrave a gap between a brick overlapped you can end up with it cutting through the material. It is sometimes difficult to catch where you have duplicated a line when copying.

 

Good luck!

 

David

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Hi

I like your turntables- since seeing fully operational ones together with motorised ventilated wagons on the "Leicester South" layout in Manchester recently, I was looking at having a go.

Could you quote for OO code 75 track?

If it is viable, maybe for 4 units?

regards

Neil

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