As long as the bearing surface is large enough, and the mast stiff enough, plastic is fine in the situation where the boom turns the mast. If a spanner or wind pressure on the sail alone is turning the mast, then at some size, depending on how often you want to adjust it and the righting moment, rollers are required.
On Sat, Aug 26, 2017 at 7:03 PM, realink@iprimus.com.au [harryproa] <harryproa@yahoogroups.com.au> wrote:
smaller boats can use plastic bearings, Im uncertain at what boat length that changes, or indeed if it does.
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Posted by: Rob Denney <harryproa@gmail.com>
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