Pearson Boats - Common Systems > Engine and Drive Train
Are all Pearson design 323 shafts/strut off to starboard ?
Eibeltje:
Thank you "Selene" and " DULCE-VITA " .
If you look from the front of your boat you have a clockwise rotating prop.In my handbook that means you have a counterclockwise rotation if you look from behind the boat !That is what I understand the way to determine the RH/LH rotation .
Before we had a Volvo MD11 and this had a counterclockwise (LH) prop.I could take my hands off the wheel and won't very my course except for wind and current changes.
The marine service department manager advised us this new engine and transmission and with that the change to a clockwise rotating prop.In the sea trail the boat showed this pulling to starboard what is new for this boat.
Nothing was done to rudder or steering setup.
We are hull #68.
You think it seems unlikely that Pearson 323 would have changed the hull mold !We have proof with " Dulce-Vita " and our boat.
"Dolce-Vita " her shaft is offset to port !
We have the same boat with a shaft offset to starboard.(see attached picture)
And "Dulce-Via " has the right clockwise rotating prop as we have a wrong clockwise rotating prop .
I wonder that you have a ZF 15 MIV transmission what you only can use in clockwise rotation (seen from behind off the boat) under warranty.They don't support reverse position in forward.
Are you 100 % sure about your prop rotation ?
You could help me tremendous to find out which is your shaft offset (starboard or port)
Eibeltje:
Wrong picture that is " Dulce-Vita " her butt.
Here is our Butt. See picture
selene:
Unfortunately Selene is in the water all year round, and the visibility underwater is poor (2' on a good day) so it is not as easy to get a clear look at the offset. Also I'm not planning to dive on her soon - just changed the zincs and cleaned the hull a couple of weeks ago! However, here are some photos. Unfortunately the image from the stern is off-center; it looks like a portside offset to me. However you can clearly see the prop rotates in the opposite direction to you.
Dolce Vita is hull #42, so if they did change the mould it was an early change.
selene:
I've been thinking about this - and hopefully others will let us know how there boats are set up. We need more datapoints.
Hull 42 Port offset Atomic 4 RH prop
Hull 68 Stbd offset Diesel RH Prop
Hull 212 ?port offset? Diesel LH Prop
The real anomaly of your prop shaft being offset to starboard. Are you sure of that? It is also possible I am wrong - the photo is not good. I checked with an expert, and the engine offset is set into the mold, so that is very unlikely to have changed. Gasoline was standard, and diesel was an option, so possibly Pearson had different inserts for the mold, one for diesel, the other for gas. Or one of us got the offset wrong!
Regardless, I think that the offset could be a "red herring". You have replaced your Volvo with a new engine (what?), and as a result your prop changed from a LH to a RH. Now you have bad propwalk. Makes sense - the old engine, prop and offset worked together to minimise propwalk; with the new engine the entire rotation appears to have reversed. :-(
Hopefully somebody else will chip in with a new datapoint.
Eibeltje:
I am 100 % sure that our prop is located starboard of our rudder.We had to pull the shaft to put a new one in and they hauled it out on starboard side of the rudder.
The service department manager looked at the specs of our boat and advised us to go with a Beta marine 25 hp with a ZF 15 MIV transmission.
That is what we have now.
Yes it is very interesting but not if you are the rabbit who has to pay the bill !
I appreciate your input and I hope that more captains will react to this topic because this will be very interesting for anybody with a Pearson 323 who has to change the engine/transmission.
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