[Alberg30] A-4 and Propeller

[George Dinwiddie]

Villo Marmei wrote:
> His boat has an A-4 and a propeller 2 Blade 13 dia  x 7R pitch. He 
> claims that his boat is to fast on docking  3.9 knots at 1000 rpm and 
> does not reach cruising  / hull speed  at normal 80% engine rpm. He 
> thinks that the previous owner changed the prop and this one is not the 
> right one.
> Can some of you A-4 fellows out there just tell me what size/pitch/blade 
> propellers are your machines running with.

That's the standard prop as installed by Whitby on the Alberg 30.  The 
experts will tell you it's too big for the aperture and too much pitch 
because the engine runs too slowly at cruising speed.  To me, it seems 
to work well enough and has done so for 30 years on my boat.  When 
docking, I'm generally in neutral by the time I get near the dock, just 
giving short bursts of power as needed.


> PS: I have some sort of pass word for our public-list.....am I supposed 
> to show the  pass word each time I send an e-mail to the site or is it 
> the same as with regular e-mail????

Welcome to the list!  You only need the password when changing your 
subscription settings.  It's just a weak security measure to keep 
someone else from changing them as a joke.  To send mail to the list, 
it's just regular email.  Note, however, that the list adds it's own 
address to the "reply to" field, so if you want to reply off list, you 
have to remember to change the "to" of your reply.

  - George

-- 
  ----------------------------------------------------------------------
   Hope your road is a long one.                        George Dinwiddie
   May there be many summer mornings when,       gdinwiddie at alberg30.org
   with what pleasure, what joy,                 http://www.Alberg30.org
   you enter harbors you're seeing for the first time;
                                            from 'Ithaka' by C.P. Cavafy
  ----------------------------------------------------------------------

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