FOWLER 16 NHP CLASS BB & BB1
COMPOUND PLOUGHING ENGINE
This very popular twin cylinder ploughing engine was built as Class BB from 1913 onwards and as Class BB1 from 1919 until the early 1930’s.
The 2” scale model has proved powerful in performance, with all the rugged and well proportioned appearance of the full size engine.
A fully illustrated constructional series of this model, written by Colin Tyler and John Haining appeared in the ‘Model Engineer’ between July 1966 and April 1967 inclusive.
BB1 leading dimensions: Overall length 46” Boiler diameter 5”
Overall width 16 ¾” Boiler length 22 ½”
Overall height 24” Boiler working pressure 75 psi
Approximate weight 240 lb Number of speeds 2
DRAWINGS: 1) General Assembly
2) Cylinder Block
3) Cylinder Covers, Pistons, Valves & Rods
4) Horn Brackets & Horn plates
5) Flywheel & Crankshaft
6) Boiler & Fittings
7) Smoke box, Chimney & Base
8) Engine Details (motion)
9) Control Mechanisms & Safety Valve
10) Water Feed Pump
11) Road Gear & Details
12) Alternative Crankshaft Gears
13) Gear Lever Details, Horn & Latch Plate Position
14) Rear Wheels & Axle
15) Front Wheels & Axle
16) Bunker Tank (tender) & Steering Gear
17) Winding Drum
18) Bunker Details
19) Motion Details
20) Water Pump Details
Complete set of drawings referenced: “BB1 drawings” at £88
CASTINGS:
REF # | DESCRIPTION | MATERIAL | QTY | £ EA. | £ SET |
BB1 | SMOKEBOX DOOR | ALUMINIUM | 1 | 32 | 32 |
BB2 | CYLINDER TOP COVER | CAST IRON | 1 | 46 | 46 |
BB12 | CHIMNEY (CORED) | ALUMINIUM | 1 | 64 | 64 |
BB13 | CHIMNEY BASE (CORED) | ALUMINIUM | 1 | 38 | 32 |
BB14 | CYLINDER BLOCK | CAST IRON | 1 | 128 | 128 |
BB15 | FLYWHEEL | CAST IRON | 1 | 94 | 94 |
BB20 | FRONT WHEEL RIM | ALUMINIUM | 4 | 48 | 192 |
BB21 | REAR WHEEL RIM | ALUMINIUM | 4 | 62 | 248 |
BB22 | REAR HUB | ALUMINIUM | 2 | 32 | 64 |
BB24 | FRONT HUB | ALUMINIUM | 2 | 16 | 32 |
BB29 | STEERING WHEEL (V29??) | GUN METAL | 1 | 28 | 28 |
BB32 | LH HORNBRACKET | ALUMINIUM | 1 | 57 | 57 |
BB33 | RH HORNBRACKET | ALUMINIUM | 1 | 57 | 57 |
BB35 | MOTION GEAR BLANK | CAST IRON | 1 | 54 | 54 |
BB36 | MOTION GEAR BLANK | CAST IRON | 1 | 54 | 48 |
BB37 | MOTION GEAR BLANK | CAST IRON | 1 | 59 | 59 |
BB38 | MOTION GEAR BLANK | CAST IRON | 1 | 60 | 60 |
BB45 | FRONT AXLE | ALUMINIUM | 1 | 48 | 48 |
BB48 | PERCH PLATE | GUN METAL | 1 | 23 | 23 |
BB49 | WINDING DRUM | ALUMINIUM | 1 | 138 | 138 |
BB50 | GEAR BLANK | CAST IRON | 1 | 78 | 78 |
BB52 | MAIN BEVEL GEAR BLANK | CAST IRON | 1 | 48 | 48 |
BB57 | CANNON BEARING | ALUMINIUM | 1 | 46 | 46 |
BB66 | BUNKER FILLER | ALUMINIUM | 1 | 26 | 26 |
BB67 | HOSE CARRIER | ALUMINIUM | 1 | 26 | 26 |
BB68 | CRANKSHAFT BEARING BRACKET | ALUMINIUM | 2 | 18 | 36 |
BB70 | CRANKSHAFT BEARING BRACKET | ALUMINIUM | 1 | 20 | 20 |
BB72 | WINDING DRUM BEARING BRACKET | ALUMINIUM | 1 | 36 | 36 |
BB75 | DUMMY BOILER ACCESS COVER | ALUMINIUM | 1 | 26 | 26 |
BB103 | WATER LIFTER BODY | ALUMINIUM | 1 | 33 | 33 |
BB103A | WATER LIFTER BASE | ALUMINIUM | 1 | 24 | 24 |
BB105 | CAST FIREBARS | CAST IRON | 1 | 48 | 48 |
BB106 | REAR WHEEL SPUDS | ALUMINIUM | 10? | 9 | 90? |
BB80 | REAR SPOKES (LASER CUT) | MILD STEEL | 32 | 1.55 | 49.6 |
BB81 | FRONT SPOKES (LASER CUT) | MILD STEEL | 28 | 1.40 | 39.2 |
BB82 | HORN PLATES (LASER CUT) | MILD STEEL | 2 | POA |
REAR WHEEL STRAKES CAN BE SUPPLIED TO SIZE WITH COUNTERSUNK HOLES AND ROLLED AT 15 DEGREES TO SUIT WHEEL DIAMETER, IE-READY TO FIT AT £2.65 EA (X 52 = £137.80)
