Engines > Your Own Design
Chris's New Steering Engine
steam guy willy:
Hi "C" , interesting shapes on the ports to control the action requirements ..never seen this before :ThumbsUp: :popcorn:
Willy
crueby:
--- Quote from: steam guy willy on June 18, 2025, 10:30:18 pm ---Hi "C" , interesting shapes on the ports to control the action requirements ..never seen this before :ThumbsUp: :popcorn:
Willy
--- End quote ---
Hi Willy! These ports have a triangular shape to give the engine a softer start then higher flow, to act as a throttle. On the other steering engine based on Michaels engine, the port ends were angled for the same effect, and the Mann Steam Wagon had the same pointed openings as this model.
:cheers:
Charles Lamont:
Willy, On model locomotives with a flat sliding regulator valve, the first part of the port to be uncovered is often V shaped. As that is still very sensitive, to help avoid wheel slip on starting, it is often suplemented by a No. 80 hole that opens first, even at 5" gauge. The tiny hole lets through a surprising amount of 100psi steam.
crueby:
--- Quote from: Charles Lamont on June 19, 2025, 09:16:35 am ---Willy, On model locomotives with a flat sliding regulator valve, the first part of the port to be uncovered is often V shaped. As that is still very sensitive, to help avoid wheel slip on starting, it is often suplemented by a No. 80 hole that opens first, even at 5" gauge. The tiny hole lets through a surprising amount of 100psi steam.
--- End quote ---
:ThumbsUp: :ThumbsUp:
crueby:
Got the manifolds to connect the passages on the cylinders to the control valve finished up, just need to make the gastkets for them...
That just leaves the slide valve/adjusting nut assembly, and the lower chain guides and chain to add in!
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