Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Thu, 14 Nov 2002 23:58:55 -0500 Message-ID: X-Original-Return-Path: Received: from imo-r07.mx.aol.com ([152.163.225.103] verified) by logan.com (CommuniGate Pro SMTP 4.0.1) with ESMTP id 1871279 for flyrotary@lancaironline.net; Thu, 14 Nov 2002 23:04:47 -0500 Received: from Wschertz2@aol.com by imo-r07.mx.aol.com (mail_out_v34.13.) id q.191.1042716a (18555) for ; Thu, 14 Nov 2002 23:04:44 -0500 (EST) From: Wschertz2@aol.com X-Original-Message-ID: <191.1042716a.2b05cc5c@aol.com> X-Original-Date: Thu, 14 Nov 2002 23:04:44 EST Subject: Water_pump Curves X-Original-To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="part1_191.1042716a.2b05cc5c_boundary" X-Mailer: AOL 5.0 for Windows sub 140 --part1_191.1042716a.2b05cc5c_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Actual data taken on 13-B Water pump at 3 different rpm values. Driven with a 3450 rpm table-saw motor with 3 different pulley sizes (2-5/8" , 4", 6") driving the 3.7" water pump pulley. No evidence of belt slippage or motor strain, however I did not use an electronic tach for the rpm measurements, just calculations from the motor rating. Pressure is measured at the outlet of the pump, before going back into the barrel through ~ 6 feet of 1-1/4" corrugated sump pump hose. Pump is supplied from barrel with ~20 feet of 1-1/4" corrugated sump pump hose. The barrel was positioned to provide neutral head in a static position, however at the higher flow rates, there is clearly pressure drop in the supply and discharge hose that helps restrict flow. 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