I start with replacing the >058 front tube with one fabricated from .120 wall chrome moly.
most Zeniths are destroyed when the tube folds under the plane.
There is a Die Spring chart to select from that list compression weight and…"
"Hello. I owned a Zodiac 601HDS for 10 years. I sold it a couple of years ago to a very nice fellow in North Carolina. I did not build it. It was built by a gentleman in Elmira.
I think that the 601 HDS is an under appreciated airplane.
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