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In lugnet.trains, Ross Crawford wrote:
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In lugnet.trains, David Laswell wrote:
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I should point out that I made a few tweaks to the design. Instead of using
non-friction axle-pins to hold the main driver wheels on, I’ve replaced them
with red 6-long axles. Then I put some stud-pins in the drive wheels and
used them to attach some 1x8 tiles. I don’t know the standard practice for
how they pair those up, but I figured they wouldn’t both be at the same
point in their rotation, so I’ve got them 90 degrees out of phase with each
other for now. 180 degrees seems like it would be more likely (one piston
extending while the other one retracts, so you’d just have to switch the
flow of steam from one to the other).
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No, 90 degrees is the norm for 2 cylinder locos, as Larry says it’s called
“quartering” (because they are a quarter of a circle apart). It ensures that
there is always at least one piston not at the end of it’s stroke.
ROSCO
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I prefer to space mine at 270 degrees.
Tim
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Message has 2 Replies:
Message is in Reply To:
 | | Re: Toy Story Train comments?
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| (...) No, 90 degrees is the norm for 2 cylinder locos, as Larry says it's called "quartering" (because they are a quarter of a circle apart). It ensures that there is always at least one piston not at the end of it's stroke. ROSCO (14 years ago, 4-Jun-10, to lugnet.trains, FTX)
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