Hi ! If you have a cheap shaft-seal, water penetrates along the shaft, corrodes the motor and thats it. As this happens at a part of the pump which in most cases is difficult to maintain and check, this is a big risk for failure (I had this once). Doubling amps can mean that your battery pack cannot provide enough current. Normal PANASONIC NiCD 2,2Ah cells failed when currents of 4,5 A were needed in my tests. You need those high Amp cells usually sold for RC-cars of airplanes, i.e. "High-Amp" or "Red-Amp" from PANASONIC or similiar stuff, which are able to provide shortcut currents between 8 to 30A. When those are used and your pump requires 12V here is the next problem. If you charge/recharge those cells, each cell has a slightly different capacity which may result in HALF of the given Ahs after several load/reload cycles. On the pro side? My pump emptied the cockpit in 2min20 when full with fresh water, tested at my boathouse. But be warned: moving salt water in your cockpit is a complete different game, as when the pump is not fully submerged and runs partly dry it takes some time to recover to full output. This is the case when the boat is moved by waves during the pumping process. This can more than double the pumping time and so sucks down your battery power. Gerald Waterproof switches can be built with a rubber membrane (bycicle tube) covering a "foot"-push-switch usually mounted in electric guitar equipment, those are heavy duty. -- Gerald Maroske gum_at_exmail.de Wörthstr. 36 24116 Kiel Tel/Fax: 0431 /1 66 34 http://gum.exhome.de *************************************************************************** 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 Wed Mar 13 2002 - 04:09:51 PST
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