Hi Phil,

The wording of your question suggests that you have not seen the ME building articles, which I believe were in 1963. As I recall, the rear hornblocks were modified by an angled top edge milled out for ashpan clearance, The sheet metal cover was to keep ash away from the trailing axle/axlebox/hornblock.

Try to get hold of relevant MEs and read up. Join a club that has them in their Library or buy them. Could always flog em on after engine built. A number of preserved railways have this type so you could visit Bluebell Rly., Kent & East Sussex Rly. or maybe others like the Isle of Wight Rly and compare full size with your model.

Good luck in your build, put up some piccies for us all to see and keep us posted on progress.

John

hi phil,

looking at a fullsize Terrier wont help you as in fullsize and on Don Young's 7.25"g Terrier 'Newport' the boiler finishes just ahead of the horncheek sides on the front of the rear horncheeks.

across the top of the horncheeks in fullsize is a frame stretcher to which the reverser and drawbar are also fixed.

martin evans extended the length of the firebox and also gave it a non-prototypical sloping bottom for a sloping grate.

ignore the trailing axlebox cover at the moment. it wont fit. you want to fit a cover later on that just covers the gap between the inner sides of the horncheeks, and just covering the axleboxes, not the whole horncheek casting. this is something to be done when you have the boiler made and doing a trial fit and also have the oil pipes to the axleboxes sorted out. the cover needs to be much smaller than drawn as otherwise the ashpan wont fit or be removable.

cheers,

julian