Re: [Paddlewise] pump my ride

From: Michael Daly <mikedaly_at_magma.ca>
Date: Tue, 17 Apr 2007 12:14:00 -0400
kayakwriter_at_aim.com wrote:

> Active Electronics Vancouver

There's one near here and I rarely go there (it's expensive compared to 
the surplus stores I usually get stuff from).

> I'm toying with the idea of carefully boring out the exit
 > through-hull fixture on my set-up with a drill, to make it
 > slightly wider for faster waterflow

A 180 litre cockpit (like a Solstice GTS, BD Ellesmere or similar) 
should empty in 4.5 minutes if the pump is hitting its 625 gal/hour 
rating.  Your 7 minute time sounds a bit slow.  Mine was a not too far 
off the rating with the normal thru-hull fitting.

Before drilling, just pull the pipe off the thru-hull and test it with 
the pipe opening at the same height as the hull.  That will show the 
time for thru-hull with no thru-hull constriction.  If it speeds up 
things significantly, then you might get part of that result with a 
drilled out thru-hull.

Your pipe looked corrugated in the photo, like the flexible, thin wall 
stuff some use for boat plumbing.  I used the straight-sided clear vinyl 
type.  That might also have an effect on the flow, especially since the 
loop you use makes it longer than mine.

Mike
***************************************************************************
PaddleWise Paddling Mailing List - Any opinions or suggestions expressed
here are solely those of the writer(s). You must assume the entire
responsibility for reliance upon them. All postings copyright the author.
Submissions:     PaddleWise_at_PaddleWise.net
Subscriptions:   PaddleWise-request_at_PaddleWise.net
Website:         http://www.paddlewise.net/
***************************************************************************
Received on Tue Apr 17 2007 - 09:14:39 PDT

This archive was generated by hypermail 2.4.0 : Thu Aug 21 2025 - 16:31:24 PDT