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Author Topic: Huff and Puff steam engine (very Tiny)  (Read 1589 times)

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Re: Huff and Puff steam engine (very Tiny)
« on: April 21, 2019, 06:15:25 am »
Yes, there is a center groove for the intake that aligns with one or the other of the ports. At the ends there is a flat that uncovers the opposite port for the exhaust cycle.
gbritnell
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