[Public-list] Props for diesels

[George Dinwiddie]

The Atomic 4 has a 1:1 drive.  All the diesels are geared down, and 
require more pitch in the prop than the Atomic 4.  You can get the prop 
shop to calculate for you, but most people seem to end up with a 13x13 
or a 13x12 (or maybe a 12").

  - George

FITZONELOVE at aol.com wrote:
> I also have a prop question; my A30 has a Yanmar 3GM30 with 2:61 gear; I was 
> told that a 12x10R 3 blade was appropriate; however, the boat has no power 
> when going into wind/chop; I am thinking of going to a 3 blade13x15, and eating 
> the $270 I paid for the 12x10.  Any thoughts/comments appreciated.
> Joe One Love #286
> 
> In a message dated 9/7/2004 5:17:55 PM Eastern Daylight Time, 
> ffelix at lycos.com writes:
> I'm unclear on the potential gearing differences between the Atomic 4's & the 
> small Yanmar diesels that are often used to replace them. Does the same prop 
> advice apply to both? Can (or should) I use the Indigo 3-blade prop with my 
> 2GM20? I, too am somewhat unimpressed by our current 2 blade prop :(

-- 
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   When I remember bygone days                         George Dinwiddie
   I think how evening follows morn;            gdinwiddie at alberg30.org
   So many I loved were not yet dead,           http://www.Alberg30.org
   So many I love were not yet born.
                                             'The Middle' by Ogden Nash
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