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Mill Twin Cylinder Model Steam Engine v2 – Assembly Instructions v1.1 

Copyright - Chiltern Model Steam Engines 

 

Page 9. 

23.

 

Screw the 2 Value Inlet Pipes into the remaining holes in the Chests (these stub pipe is used 
for connecting to an air source). The threaded holes in the chest are ¼” x 40 tpi ME which 
will accommodate the most common connection to a model steam boiler. 

 

 

24.

 

If not already in place, screw the 4mm setscrew into the hole in the Flywheel and push the 
Flywheel onto the Crankshaft. Tighten the grub/setscrew. 

 

 

25.

 

If included the following steps are for the Inlet Manifold Connecting Assembly. 
Before fitting the Inlet Manifolds the 4 M2 cap screws should be checked for length. Place 2 
Manifolds together and use 2 M2 cap screws and nuts to fix them together. The cap screws 
should be only just long enough to allow the nuts to be fully tightened otherwise they will 
interfere with the Chest when installed. 
 

26.

 

Screw 2 Inlet Manifolds into the Chest inlet holes. 

 

 

Summary of Contents for Chiltern Mill Twin Cylinder

Page 1: ...plication although do take a long time to dry between coats up to a week before the engine can finally be assembled Use masking tape to cover the mating surfaces or scrape off the paint as needed afte...

Page 2: ...lable for download from www chilternmodesteam co uk NOTE for shipping purposes many parts will be packed semi assembled or in place e g grub screws bearings and eccentric rod 2 Fix the 2 Slider Tubes...

Page 3: ...should be free to rotate around the Connecting Rod end 4 Remove the Connecting Rod Bearings and Keeps from the Connecting Rods and keep the respective pairs together 5 Screw 2 M3 nuts onto the longer...

Page 4: ...themselves properly on the shaft Lubricate via the hole in the Upper bearings 9 One side at a time place the Connecting Rod Bearing halves and Keep around the Crank Shaft as shown in the following pi...

Page 5: ...E tape can be wrapped around the shaft and Packing Nut thread When tightening the Packing Nut into the plate ensure the shaft can still move freely that is do not screw tight Place one Cylinder Plate...

Page 6: ...e the Piston can move freely in the Cylinder There is some tolerance in the Cylinder and Cylinder Plate holes to allow them to be moved into a suitable position to allow free movement of the piston 16...

Page 7: ...ric Rods using M2 10mm cap screws and lock each with a nut as shown in the following picture 19 Push the 2 Eccentric Wheels on to the 2 ends of Crank Shaft don t tighten the grub setscrews yet 20 Inse...

Page 8: ...s Get the respective positions correct and then tighten the grub setscrew NOTE if both Eccentric Wheels are fixed 180degrees to that show the engine will run in the reverse direction 22 The steam inle...

Page 9: ...y in place screw the 4mm setscrew into the hole in the Flywheel and push the Flywheel onto the Crankshaft Tighten the grub setscrew 25 If included the following steps are for the Inlet Manifold Connec...

Page 10: ...screws to go through 30 Some trial and error may be required to get the Manifolds to accurately mate together i e screwing out or in the Link Pipe and or Manifolds Once aligned lift up the Inlet Mani...

Page 11: ...e photo and as mentioned earlier the manifold can be installed on the bottom of the Chest engine with Chest Plugs on the top 34 Lubricate the engine to ensure it operates freely 35 To test the model a...

Page 12: ...Twin Cylinder Model Steam Engine v2 Assembly Instructions v1 1 Copyright Chiltern Model Steam Engines Page 12 37 Please send some pictures of the completed engine to email sales chilternmodelsteam co...

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