Does anyone have a plan fo ra double helix using O 31 gauge track?
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This thread may answer your question,.
from Nov 1955 Popular Mechanics...
sorry about the quality, but this was a tiny ad to begin with.
not sure what degree the curves are.
cheers...gary
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That helix with O31 track would be very steep grades! That figures to be about 6% grades, you won't be running anything long up that kind of grade!
To use O31 in a helix, you're going to have to consider an oval to reduce the grade to the 4% range at least.
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