Thread: Discussion New steam engine supplier
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Old Jan 01, 2013, 05:13 AM
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Brooks, yes the disc valve swaps admission and exhaust. Quite common in model/toy engines, and I guess not encountered in full size engines, probably for the reasons you give.

As you say, the throttle arm clears the path of the pins as soon as it has pushed them into the desired direction. If the lever travel circle is made in such a way as to intersect the pin travel circle only at TDC it should be easy enough to keep it from colliding fourther down their path, which is only used for throttle action.
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