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    Help with prop size, please

    Hi I was wondering if any of you knowledgeable people could help me out on this one, I have a 1980 Glastron 266 (27 foot) twin fitted with a pair of Mercruiser 470's driving pre alpha stern drives (1.81). The boat goes very well except, at idle the boat is a pain in the marina as it the slowest...
  2. S

    Glastron Aventura 266 prop size

    Hi, can anyone help me out who has a similar Glastron. Year 1980 twin Mercruiser 470's with the pre Alpha drives. The boat has 29pitch props at the moment and I am not sure if these are correct for the vessel. at idle (750rpm) the vessel does 12 knt and at WOT it does 49 knt, (4100rpm) speeds...
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