Forums General Discussion Prop Offset and other stuff

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    • #66987
      Indulgence
      Participant

      Hello,

      When Rich first suggested that Pearson put shaft slightly offset it made me very curious….when I was working on the boat yesterday, I stood about 15 or so feet back from the stern and was able to see a very slight offset to starboard.

      The boat is schedule to be launched the 19th. It’s been a busy winter…Replacing the chain plates was a bigger job than I had imagined. Total cost was a bit over $500. I used one template each for the large and the small chainplates. My other project was replacing all my running rigging…I’ll be installing the new rigging next week…before the masts go back in.

      Once launched there still is alot to do…Cetol the teak, work on some rewiring for the tricolor, install some insulation on the cover of the fridge, and fix some other miscellaneous problems.

      I am planning on attending the SSCA Gam in Isleboro 8/1 and 8/2. If anyone is cruising Maine this summer, please let me know.

      John Sommer
      Indulgence #179
      Portland, ME


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    • #69822
      john stevenson
      Participant

      I think John found the key, if you're not really looking for the offset you probably won't notice it – unless you are pulling the prop shaft. Even if you are looking for it, it is probably easy to miss. When Sarah was short-hauled in Feb to re-pitch the Maxprop I looked to see if there was an off-set, but with the mechanic costing my $100/hour I didn't ask him to step out of the way while I checked the offset :).
      It does appear that this offset was a common practice at Pearson on more than the 424. There is a Pearson 28 at my dock and the owner claims his shaft is also offset and the boat is a bear to steer under power. Probably the effect on a 28 footer would be more severe than on a 42 footer. I don't notice any steering issues once underway in forward. The stern does walk to starboard in reverse. No problems turning to port at slow speeds, starboard is another matter.
      Rich is certainly right that this not something Pearson would do randomly. They might have changed the practice after a certain hull number. So if you haven't actually inspected your boat for this configuration when it is out of the water, I wouldn't assume it is not there just because you never noticed it.

      John

      On Fri, May 9, 2008 at 9:16 AM, John Sommer < ([email][/email])> wrote:

      Hello,

      When Rich first suggested that Pearson put shaft slightly offset it made me very curious….when I was working on the boat yesterday, I stood about 15 or so feet back from the stern and was able to see a very slight offset to starboard.

      The boat is schedule to be launched the 19th. It's been a busy winter…Replacing the chain plates was a bigger job than I had imagined. Total cost was a bit over $500. I used one template each for the large and the small chainplates. My other project was replacing all my running rigging…I'll be installing the new rigging next week…before the masts go back in.

      Once launched there still is alot to do…Cetol the teak, work on some rewiring for the tricolor, install some insulation on the cover of the fridge, and fix some other miscellaneous problems.

      I am planning on attending the SSCA Gam in Isleboro 8/1 and 8/2. If anyone is cruising Maine this summer, please let me know.

      John Sommer
      Indulgence #179
      Portland, ME


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      Regards,
      John Stevenson
      http://www.svsarah.com

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    • #69824
      Paul Lefebvre
      Participant

      I agree with John, it can be hard to pick up the offset, given all of the
      curved surfaces around. Since mine is on a cradle, I was able to measure it
      up yesterday and it is offset as Rich described.

      Paul


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