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| Building a 31/2" Gauge Locomotive Engine |
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| kvom:
--- Quote ---I'm getting to the point when the chickens come home to roost. --- End quote --- I know just that feeling as that's where I am with my build. :thumbup: No worries! Looks great! :beer: |
| shoey51:
--- Quote from: Stilldrillin on July 13, 2009, 03:31:46 AM --- --- Quote from: shoey51 on July 05, 2009, 08:06:49 AM ---Im picking the loco up next weekend so no pictures till then Im afraid --- End quote --- Er..... Graham? :wave: Graham!! :wack: Don`t you think these good people have waited long enough, to see what I`ve seen? :poke: Perhapse, not on Stew`s posting though........ :thumbup: David D --- End quote --- Here you go David and for any one else thats interested :D http://madmodder.net/index.php?topic=1447.0#new |
| sbwhart:
Well I've bitten the bullet and a few days ago I started assembling the valve gear. Its quite a fiddly little job with lots of small fasteners to do and undo, and its one of those jobs you just can't rush. Any way first thing I did was to strip the wheels off the frame. Ther's lots of little bits you have to carfuly put away and label. When doing thes jobs you realy apreciate the assembly frame, that allows you to turn the loco through 360 deg, so you can move it about to gain access to bits, the one I'm using I made myselve, I'd seen a number of frames in use and I just came up with a design that suited the bits I'd got, I used some ally angle, box section, some 10mm studding, and bit of steel and wood and cap screws. This is a close up of one of the pillars. One problem from not using a casting for the cylinders was that the square section fouled the leading wheel horn block, to get round this I just milled a chamfer on the cylinders. Note the use of a ball race ring used as a parallel. The cylinders are positioned 1" from the buffer beam and 5/16" from the top of the frame, it was carfully put in position and a big clamp put over the frame whilts the clamping hole positions were spotted through the fram with a hand drill. The cylinder was then transfered to the mill and the holes drilled in the side of the cylinder taking care not to drill through into the bore. To keep them nice and square the holes were tapped 5 BA using the stand. Note the valves port faces are protected with masking tape. The motion frame was assembled using the same technique (no pics forgot) This is the asembly so far next job the valve linkage. Having fun Stew |
| Divided he ad:
Looking good Stew..... Glad you're taking the time to explain a few of the bits :thumbup: :nrocks: Ralph. |
| Stilldrillin:
Stew, That`s looking very complicated! You might be having fun...... I`m holding me breath! ::) Hope it keeps on developing successfully for you...... :thumbup: David D |
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