If any of you visit the live steam forum on mylargescale.com this will
be a repeat, however, I must also ask this question here. The timing
process of a Accucraft C-16 is similar to the Roundhouse except the
Roundhouse valve blocks are threaded, enabling adjustment by rotating
the valve stem. The Accucraft has to be adjusted by removing the steam
chest covers, loosening the set screws and sliding the valve block on
the stem.
Inside the Accucraft C-16 steam chest:
http://1stclass.mylargescale.com/seadawg/c16/schest.jpg
After making many attempts to time the engine, it seemed as if the slide
blocks were too long (fore & aft), setting the slide to open just after
TDC would completely cover the opposing port. Word has it that this is
not unheard of on some of the earlier serial numbers (of which this is).
My question is: Does anyone know how long the slide block is supposed to
be?
Mine are .430" and .412"
Thanks,
Dave Orwig
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