Return-Path: Received: from imo-r13.mx.aol.com ([152.163.225.67]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Tue, 16 Jan 2001 08:17:38 -0500 Received: from N295VV@aol.com by imo-r13.mx.aol.com (mail_out_v29.5.) id k.f6.69d7a74 (3971) for ; Tue, 16 Jan 2001 08:25:48 -0500 (EST) From: N295VV@aol.com Message-ID: Date: Tue, 16 Jan 2001 08:25:47 EST Subject: Re:NACA Duct Shutoff To: lancair.list@olsusa.com X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> I made a very utilitarian shut off for my NACA Duct by buying a 4" sliding vane shut off from Builder;s Square or Lowe's or Home Depot. This was being sold in the department that sells sawdust vacuums and tubing, fittings, etc. for ducting your sawdust into a vacuum. It is made of injected molded black plastic, and weighs 6 or 8 oz. I put it inline with the 4" SCAT tubing coming from the tail, and I fashioned a cable fixture out of aluminum so that I can access it by pulling a cable handle--which I mounted between the stowed wheels in the belly. In the late fall, I pull the handle to close off the duct, and in the spring, I open the duct. Works swell. You can buy 12 volt motorized units from mobil home parts centers, but they weigh a couple of pounds. The push-pull cable is light and works fine. David Jones >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>