Up one level Neidrauer Adventures Photo Album » Building a Live Steam Locomotive - the Mikado Project » Section 16 - Cab Accessories
Section 16 - Cab Accessories
Completed! Cab Accessories. Should be called the plumbing section! 2014 - We make a steam vacuum ejector for the train brakes, lubricator for the brake stand. May 2012 - Minimum required plumbing completed for first fire-up. The manifold, main steam valves, accessories and controls all need to be plumbed in this section. The reverse stand is nearly finished (Aug 2011), Johnson bar. Plumbing completed for: Manifold; Blower; Main Steam Gage; Water Glass, Aux Air Manifold. Injectors are next.

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 8-Sept-2014 Cab lighting, try #3 (#1 was a flashlight, no good. #2 was individual LED lights which looked good was were easily damaged) This is a flexible strip of 9 lights with three LEDs per light, 12vdc input. I make a metal bracket to hold them so they can be bolted to the inside cab roof.  16-June-2014 This ejector sure is a small package. And we're not sure we have all the dimensions correct. After silver soldering the pieces together, we test it on air and it only pulls 5 inches of vacuum. This is a big disappoinment, the other unit pulled 12 inches. But we worked so hard on this one we decide to install it anyway and have to wait until the next run day to test it under steam. Come next run day we put the vacuum gauge on it and put steam through it -- 21 inches of vacuum!! Success!  14-Jun-2014 Those tapered cones sure are small.  14-June-2014 We found the vacuum ejector someone else had built (top right) would only pull 12  9-Jun-2014 The brake valve locked up again, so I add a hydrostatic lubricator to the steam supply line.  24-Apr-2014 New LED lighting is installed in the cab for night running. It's all temporary, held with plastic ties.  The brake valve chest assembly was taken apart to find out why it was laking steam. We found the valve stems (square on end) were not actually round, but oval. Shows the danger of using CNC and circle-interpreting a shaft-CNC does not produce a truely round shaft. I replace the old stiff O-ring and hope it will conform to the oval shaft and stop the leaking.
Octover 2013 update: the valve assembly started out okay, but after several hours of use, started leaking again. It also started leaking between the two halves of the assembly.  20-Aug-2012 I've finished bending and running the engine brake line from the brake valve all the way forward to the brake steam/water separator.  13-Aug-2012 Bill spent the evening making up more 1/4  Side view showing the fabricated steam/water separator for the brake cylinder.  13-Aug-2012 The home-made steam/water separator all soldered up. The top pipe is steam to the brake cylinder, middle pipe into the side of the separator is steam in, and on the bottom is an automatic water drain, made from a modified Zerk fitting. We just shorten the spring inside the zerk to let the tiny 3/32  6-Aug-2012 Fitting the water separator to the brake cylinder.  4-Jun-2012 The brake stand plumbing block below the cab floor. The plumbing block is very neat and self-contained, containing all the passages, valving and fittings to control the engine and train brakes. This is not the RailRoad Supply design for the plumbing.  It is up to Bill and I to figure out how to plumb the connections while still allowing the cab floor to be removable (the plumbing block is bolted to the floor).  4-Jun-2012 The brake stand has been drilled and is ready for plumbing installation.  4-Jun-2012 With two holes drilled in the floor using the match plate, we put dowel pins in the openings to keep the plate from shifting anymore for the rest of the holes.  Although the welding pliers have a tight grip, their actual clamping force is weak compared to the side force the drill point puts on the match plate while drilling, the plate has shifted slightly when we drilled the dowel holes.  With the clamps and pins in place the plate will not move around anymore.  4-Jun-2012 I find myself not enthused about disconnecting all the plumbing to remove the cab floor to drill the brakestand holes and convince Bill to match drill them.  A couple of deep jaw welding pliers are used to hold the plate down.  We also measure from the edge of the cab floor to the corners of the plate to make sure the plate is square to the cab sides.  4-Jun-2012 We find that the firedoor, which hinges on the right, will almost hit the brakestand, so we move the centerline to the right a bit more. Although the prints do not give and exact location of the brakestand, our position is pretty close to measurements from the cab controls page.  4-Jun-2012 Measuring to the centerline of the brakestand from the cab edge.  4-Jun-2012 Using the center hole from the template as a reference, we take measurements to locate the brakestand from known edges for accurate machining.  4-Jun-2012 With the freight elevatorout out of service, we can't get the engine out of the basement for first fireup. We turn our attention back to the cab and start installing the brakestand. It's a railroad supply stand, purchased finished from another Mid-South builder.  Using the template provided, we spend a few minutes positioning the stand in the cab, trying to account for the where firedoor is when open, position in the cab opening, acess to the valves above and plumbing routing below the deck!  Basically an educated guess.  21-May-2012 By the time I got the camera out, Bill had finished turning six stainless steel plugs for the overfire tubes. We will find out if some, all or none of these plugs will be needed only when we fire the engine up and learn what its needs will be.  20-May-2012 A better way of aligning the slot truely vertical.  20-May-2012 I need to put a flat on the upper part of the shaft to give the setscrew in the handle room to bite without raising a burr on the shaft. Previously I had chucked the up the shaft by eye and milled a small flat, which not surprisingly poorly aligned the handle. Taking the time to align the slot truely vertical and milling the flat gave the desired results.  19-May-2012 View below the cab floor of the installed valve extensions, showing the engagement of the pins into the original valve handles.  19-May-2012 The installed control valves.  19-May-2012 The modified atomizer handwheel. A bit of handwork with a small file to take the sharp edges off gives a distinctive handle gloved hands can easily grasp.  19-May-2012 I didn't want the atomizer handwheel to be the same size as the fuel handwheel, even though they are both identical.  So I install the handwheel onto the stem, and with a sharp tool, turn the outer portion of the handle off.  18-May-2012 All three 3/32  18-May-2012 I've centered the extension in the mill and determined that the pin spacing should be 0.180 over from center.  18-May-2012 We've decided the valve stem extension should have pins that stick down and engage the webing of the original valve handles. The oil valve has an odd number of web spokes, so three 3/32  18-May-2012 A little bit of heat and some silver solder joins the stem to the disk with one of the nicer looking soldering jobs I've done in a while.  18-May-2012 A little more lathe work and with the help of a 5-40 die, I've put threads on the end of the extension rod to tightly hold the handle to the stem.  14-May-2012  We decide to use two already square broached handles from SuperScale, leaving the original valve handles on the valve stems.  14-May-2012 Using a stop rod to re-locate the part each time, and a collet holder, we machine a four-sided flat into the extension rods.  The machining sequence is: set the mill depth, machine one flat, un-chuck the collet holder from the vise, turn 90 degrees, re-chuck against the vise stop and machine the next flat. Do not adjust the depth of cut until you have completed all four sides and re-measured the end.  14-May-2012 The finished water bypass valve handle extension.  14-May-2012 Drilling the underside of the cab floor to anchor the water valve handle extension bushing.  You can also see the SS nuts holding the fuel and atomizer valve extension bodies to the cab on the left.  14-May-2012 The valve extension installed for a trial fit onto the factory lever handle (which has been bent over into a u-shape.  14-May-2012 Using a square collet holder, I've machined four flats on the 1/4  14-May-2012 One valve extension we CAN put a 1/4  7-May-2012 Freshly turned stainless steel handle extensions.  The print calls for us to move the original handwheels from the valves to the top of the extensions, but we can't believe we can put the tiny square hole into the stock to install on the valvestem. We elect to think about it some more while working on other things.  24-Apr-2012 I continue to work on connecting up the temporary tender.  A drawbar is made up from the scrap box, and plumbing lines are completed.  23-Apr-2012 The cab floor with location marks, ready for drilling. We next take the floor to the mill and using a stop rod in the vise so we can more accurately re-clamp, drill a small hole the size of the valve extension at each location. Re-installing the cab floor, we look down the holes at the valve stems below and  check our work. Making notes if the holes need to be nudged a bit in any direction, we return the floor to the vise and drill the larger holes for the valve stem support brackets.  23-Apr-2012 Doing our best to accurately lay out the valve extension holes in the cab floor. Scribing the Y coordinate on the floor.  We repeat this for all three valves and in the X (left-right) direction.  23-Apr-2012 Doing our best to accurately lay out the valve extension holes in the cab floor. We've clamped a small angle plate to the floor to keep the combination square true when measuring below the floor and transfering the mark above.  23-Apr-2012 Doing our best to accurately lay out the valve extension holes in the cab floor.  Using a known reference point, the edge of the cab floor, we do our best to measure the X and Y positions of each valve.  20-Apr-2012 There's no good way, at least as far as I could see, of getting through/around the trailing truck frame connection point. No room above since the burner lines are there, so below it goes, and then around the brake rigging.  I hope they are not too vunerable to damage when the engine goes on the ground.  20-Apr-2012 I end the day working on the water connections from the tender to the engine, silver soldering the pipe to the injector union fittings.  20-Apr-2012 The backhead is looking busier with all this plumbing installed!  I wonder if anything leaks?  20-Apr-2012 Things are coming together, plumbing-wise.  Installed is the M-F-F tee to the boiler fill piping; the axle pump water bypass valve installed in the bulkhead fitting on the left cab support bracket (partly obscured under the Aux Air manifold), the Atomizer steam line coming down from the cab to the atomizer control valve, the fuel oil valve and the water glass blowdown drain pipe (extended past the cab floor).  20-Apr-2012  The water bypass valve mounting block has been mounted on the left cab support bracked, and a test piece of pipe flared and put on the protruding flare nipple.  This pipe will be the water return connection from the engine to the tender.  And I've started running the axle pump water lines under the engine, going forward.  9-Apr-2012 We've turned down the hex flats on a flare nipple plug (male thread) and later that evening silver solder it into the brass block (above it).  9-Apr-2012 We start into the axle-pump bypass valve installation.  I've purchased a 90 degree ball valve to fit into the crowded under-cab space.  The inlet is on the bottom, outlet on the right. Bill has machined, turned and threaded a block of brass to use as a combination mounting bracket and union.  9-Apr-2012 The check valve is soldered into the engineer's side injector line  9-Apr-2012 The check valve is soldered into the fireman's side injector line.  3-Apr-2012 And here's an under-frame peek at the fuel oil and atomizer lines going from the cab to the burner under the firepan.  3-Apr-2012 Here's how the under-cab-floor plumbing is looking.  3-Apr-2012 Bill has finished another batch of 3/16  3-Apr-2012 Positioning the check assembly to determine where to cut the pipe. Engineer's side.  3-Apr-2012 Positioning the check assembly to determine where to cut the pipe. Fireman's side.  3-Apr-2012 New poppet water check valves to be installed after the injector output. Although there is a boiler check at the other end, these checks keep the pipe full of water and prevent the pipe from draining back throught the injector. Also serves as a secondary steam check from the boiler.  26-Mar-2012 A trial assembly of the boiler fill plumbing.  The garden-hose male connector will be shortened and modified to be a dust plug.  With a little adjustment of a 1.5  26-Mar-2012 A small part in a big chuck!  Bill had the good Clausing lathe tied up making fittings, so I oiled up the old Rahn-Larmon bug lathe to turn the square bulk off a Male-Female-Female Tee.  26-Mar-2012 Another hole in the cab floor -- milling a pocket for the fireman's side combination washout plug and boiler fill.  22-Mar-2012 Oil fuel line inlet (right) and union with line going forward to the burner.
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