Join Date: Dec 2006
Location: North Carolina
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Rep Power: 10
Go to the Watkins owners' web site for the prop answer
There are two mutually supporting Watkins websites, http://watkinsowners.com/
which has a wealth of technical information about each of the Watkins lines as well as history of the company and http://finance.groups.yahoo.com/group/watkins/
which has an active subscribership of over 400 Watkins owners sharing maintenance, restoration and upgrade information. Go to the second one and that discussion of props and engine rpm is taking place right now among some very knowledgeable owners and diesel mechanics.