[C320-list] Raw Water Intake Thru-Hull

[alahlm at comcast.net]

Folks

   Which would be faster a folding prop with a clam shell scoop or a fixed plade w/out a scoop

   Al Ahlman
     #476

-------------- Original message -------------- 
From: Pat Moriarty <patm at psiurethanes.com> 

> Folks this is basically a positive displacement pump which will draw 
> water by vacuum so a rear facing scoop is going to work just as good 
> as a forward facing but will probably be less likely to plug when 
> just sailing not motoring. 
> 
> Pat 
> 
> #130 
> 
> At 08:14 PM 12/20/2007, you wrote: 
> >Maybe so, but why take the chance. Keep in mind that if there were no 
> >way for water to get past the impeller with the engine off then you 
> >wouldn't need the vented loop in the engine cooling line, because a 
> >siphon couldn't get past the impeller either. 
> > 
> > 
> >bruceheyman at cox.net wrote: 
> >>Scott, 
> >>I would think that could only happen if your impeller was defective. Bruce 
> >>Somerset 671 SoCal 
> > 
> >(Is that enough context?) 
> > 
> 
> Pat Moriarty 
> PSI Urethanes Inc 
> PH: 800-888-5156 Fax: 512-837-8733 
> Please visit our web site at 
> www.psiurethanes.com 
> 
> 
>