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A0 1920 (A) - LOW Running Plate - FUD

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Product Description
General A0 range overview.  Product descriptions below this...

The A0 is a 'what if' 4-6-2 Pacific locomotive design that was as far as we know drawn by Sir Nigel Gresley in 1915 and a couple of known redrafts afterwards.  A0 is not a real designation but for identification I coined it years ago when helping with the formation of two essays on the A0 and the possible development of it into other rebuild combinations.  I personally believe along with others that it may also form the basis of certain Railway Series characters.

For an in depth explanation of what the A0 is with photographs please check out the following link...
https://www.scalefour.org/forum/viewtopic.php?f=20&t=5583
... and please also check out the aforementioned essay links WITHIN the link for a full understanding.

The wheelbase of the A0 1915 drawing is...
6'3" + 5' 3" + 7' 0" + 7' 0" + 8' 0" - However the Gresley A1 is...
6'3" + 5' 6" + 7' 3" + 7' 3" + 9' 6"

For this reason the SCC A0 range has been designed instead to fit the A1 wheelbase so they can still fit  RTR and kit chassis.'

The SCC A0's have been designed around three different Hornby Gresley A1's (bodies & chassis) to ensure as much compatability as possible between them.

What is offered is full locomotive body shells and also as another option the shells split down into kit components so you can combine them into various combinations yourself, even more combinations than the full shell options will be possible this way. 

For the kit route the parts will be easier to prepare and clean the surfaces for painting, also if you order just a running plate for example then you could use your own A1 body and cut out the relavant bits to fit the plates, used this way the items can be used for kit bashing purposes.

Certain configurations will require you changing cylinders and valve gear, or at least modifying them in various ways but the items in question will point you to the suggested changes in the product descriptions.

Product Description...

This is the  A0 1920 Running Plate (A).  One of Gresley's redrafts removed the originally proposed parallel boiler and replaced it with the Gresley tapered boiler like on the A1's, further more this drawing also showed angular cylinder covers at the front of the running plate.  This is the original version of the 1920's running plate labelled (A).   Evidence of this came to light later down the line that there was published more than one depiction so there will be another version of the 1920 running plate in due course that looks quite a bit different.  It may be integrated into a full body shell due to the geometry that might not combine with the existing range easily, but we'll see.  For now however...  

With this running plate you may combine it with the other SCC A0 items in the range to make any of these combinations (or others), or you can fit the running plate (complete or in part - your choice) to an existing Gresley A1 in your model collection for a similar affect.   If you need to cut the splashers off then it is advised you cut them off a Hornby model rather than off the SCC running plates, if using an SCC A0 or A1 boiler and firebox then they will fit from the off as the cut outs are already modelled in and were designed together as a cohesive modular system.

These have been designed to make life easier for you to do these conversions as you won't have to scratch build the replacement parts.  

The rear of the running plate as a section sprued on.  If building the A0 1915 or A0 H1 (as they are slightly shorter) then this needs to be removed and unless you want to swap and change the locomotive's period or look you can discard it.  For ANY other version this needs to be de-sprued and glued in place.

Buffers are sprued inbetween the chassis and the various cylinder covers are joined together.  Carefully cut them out and clean the edges and they can then be glued in place for a strong join, or you could provide them temporary to change the look.  The reverser lever is in position under the runnin gplate, however ideally you need to extend it with brass or plastic section to go through the plate into the firebox, for printing toleranc risks it has been omitted here.

Under the running plate you will have to locate where the screw goes to fix the chassis if using a Hornby A1, just position the chassis and mark it then drill a thin hole, the material whether WSF or FUD will self tap. Originally the holes were designed in yet the positions of the various Hornby versions moved slightly making it too difficult to ensure they will work with every version. 

The running plate has a main height set at a LOW position.  This is important when considering what cylinders and valve gear changes may be needed, see below.

If using Gresley A1 cylinders and valve gear (as suggested for these particular versions) then the area above the Radius Rod and Expansion Link will need remodelling slightly to account for the fact the running plate in this area is lower than on a standard Gresley A1.  The best way to explain the modification is thus:  If you imagine looking at the locomotive head on, then for Hornby valve gear, from the edge of the chassis block the bracket usually comes out roughly 1cm and then goes down to the valve gear; you need to tweak it so that it goes down immidiately from the chassis block edge and then goes out to the valve gear instead, being careful not to foul the wheels.  If you need a picture please email me and I'll do what I can!
 
Details
What's in the box:
A0 1920 - LOW Running Plate - FUD
Dimensions:
17.23 x 3.64 x 2.46 cm
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6.78 x 1.43 x 0.97 inches
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Rating:
Mature audiences only.
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