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#29 Blast Nozzle

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Blast Off!

Started to design the chimney stack, petticoat and blast nozzle.  Used formulas to determine sizing, positioning, etc.  Proved one thing, theory doesn't always work!  If I used the formulas, the 1:3 and 1:6 cones would not be in the right position so I threw out the formulas and repositioned things so the 1:3 and 1:6 cones were in the right spot.  I figured that was more important to get proper draft.  Here's a drawing with the final setup.  The GREEN cone is the 1:3 and the RED Cone is the 1:6  Also included a drawing of the parts that made up the blast nozzle.

  

 

Here's the CAD drawing of the blast nozzle.

 

 

In order to make things easy to change, I designed this thing so I can adjust the height by adding or removing plates.  The nozzle itself can be easily replaced in case I needed to adjust the blast angle, orifice size, etc. during test runs.  I also drilled 4  small holes at a 3 degree inclined angle for the blower.

 

Update:  Please see section #47 Post Steamup for modifications to the blast nozzle.

 

Well, the next thing is to get the stack and petticoat made and installed.  Stay tuned.

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#01 So It Began #2 Frame #3 Drivers #4 Quartering #5 Trucks #6 Frame & Wheels #7 Side Rods #8 Cylinder Boring #9 Cyl/Valve Liners #10 Cyl/Valve Cover #11 Pistons & Valves #12 Cyl Assembled #13 Boiler #14 Suspension #15 Crosshead #16 Brakes #17 Link Support #18 Bell #19 Crosshead (again) #20 Connecting Rod #21 Stationary Runner #22 Smokebox #23 Valve Gear #24 Running on Air #25 Piston Rings #26 Axle Pump #27 Plating #28 Lubrication #29 Blast Nozzle #30 Stack #31 Steam Turret #32 Burner Manifold #33 Mounting Brackets #34 Boiler Insulation #35 Jacketing #36 Cab #37 Throttle #38 Reverse Lever #39 Track Test #40 Smokebox Access #41 Electric Blower #42 Turbulators #43 Burner Test #44 Piping #45 Cab (part 2) #46 Inaugural Run #47 Post Steamup #48 Smokebox Lights #49 Running Boards #50 Pilot #51 Skirting #52 Paint #53 Lettering #54 Whistle #55 Skyline Casing #56 Fuel System Mods #57 Odds and Ends #58 Turbos

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Last modified: 09/02/2017.