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Posting a reply to: Re: Navigator Opinions

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[QUOTE]VMS - 9/19/2013  7:05 AM

[QUOTE]Nick59 - 9/18/2013  6:09 AM

So what else can you do besides run stainless and make sure your WOT is where it should be? I run a pro v tiller and use the largest diameter prop and pitch it where I'm near max WOT.

Thanks
Nick[/QUOTE]

Hi Nick,

Max diameter is good for handling, but in order to run a big eared prop, the pitch must come down.  In maximizing the efficiency of running any boat, a balance must be struck between diameter and pitch for what you are looking for out of the rig.  If you want speed, going smaller diameter and higher pitch can get you there, but you sacrifice handling and hole-shot because you are reducing the amount of surface area on the prop for grabbing water.  Some of that can be offset with vent holes in the prop hub to help hole shot, as the motor spins up to a higher rpm when the prop grabs.  Adding cupping can add handling characteristics, bow lift, stern lift, etc depending on where the cupping of the fin is added, giving even more options for what you want your boat to do.

Lots more could be discussed as well, but there are lots of options available..

Steve
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VMS

Posted 9/19/2013 7:05 AM (#664217 - in reply to #663933)
Subject: Re: Navigator Opinions

Posts: 3508

Location: Elk River, Minnesota

Nick59 - 9/18/2013 6:09 AM

So what else can you do besides run stainless and make sure your WOT is where it should be? I run a pro v tiller and use the largest diameter prop and pitch it where I'm near max WOT.

Thanks
Nick

Hi Nick,

Max diameter is good for handling, but in order to run a big eared prop, the pitch must come down. In maximizing the efficiency of running any boat, a balance must be struck between diameter and pitch for what you are looking for out of the rig. If you want speed, going smaller diameter and higher pitch can get you there, but you sacrifice handling and hole-shot because you are reducing the amount of surface area on the prop for grabbing water. Some of that can be offset with vent holes in the prop hub to help hole shot, as the motor spins up to a higher rpm when the prop grabs. Adding cupping can add handling characteristics, bow lift, stern lift, etc depending on where the cupping of the fin is added, giving even more options for what you want your boat to do.

Lots more could be discussed as well, but there are lots of options available..

Steve