[alberg30] Prop size for Atomic 4

[JANET LEMBO]

From: JANET LEMBO <jlsasha at erols.com>

Andy Vine wrote:
> 
> From: "Andy Vine" <andyv at intergate.bc.ca>
> 
> As new owners of Anila Vara (#175) we are interested in hearing from others
> about the best propellor size and pitch for the Atomic 4. Our current prop
> is 11" and gives us about 4.8 knots at 1500rpm in smooth water. (The
> mechanic who worked on the motor said we should run at 1400 - 1600rpm.) The
> motor is rated at 30HP at around 3500rpm so clearly we are not taking full
> advantage of the available power. Would a smaller prop help?
> 
> 13/7 seems to be the ticket. Joel #449

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