It'll work on the intake side. Before I built up my VW2180 I talked a friend into nippling his dune buggy intake and placed a regulator between AH and the intake. It will spin up as long as you are not at full power. After startup, you vac. instruments will spin up as you taxi to takeoff but will lose airflow during your takeoff and climbout. I would believe the instruments would still be spinning fast enough though so as indicate properly. I wouldn't rely on this being IFR (but I still don't consider the KR to an IFR airplane in any shape or form) so this shouldn't be a problem. Changes your mixture setting a little but as long as you have mixture control it works. I don't know how many instruments you could run with it as I forget now the amount of pull you have to regulate......the number 6 sticks in my mind right now. The backup vac. system in my Bonanza is an STC'd systems that works exactly the same way. The documetation states to pull back the power so as to generate max vac differential to drive all the instruments.
OH, but Jerry.........you ask about exhaust.............got me:-) Man, it sure seems like it would work though, doesn't it. Go nipple your lawn mower and see if it will pull 6":-) Dana Overall Richmond, KY RV-7 slider/fuselage http://rvflying.tripod.com do not archive >From: "KRJerry" <krje...@bellsouth.net> >Reply-To: KR builders and pilots <kr...@mylist.net> >To: <kr...@mylist.net> >Subject: Re: Re: KR>Glass cockpit-vacum source........ >Date: Fri, 25 Apr 2003 22:49:35 -0700 (Pacific Daylight Time) > >Netters......... > >Have any of you guys looked at drawing a vacum from your exhaust.....? > >After the Wannabee gets into the air we are going to look into it again. >We >have both considered it before on other planes.............. > > >N64KR >Jerry Mahurin >Lugoff, SC >krje...@bellsouth.net >http://kr-builder.org > > >-------Original Message------- > >From: KR builders and pilots >Date: Thursday, April 24, 2003 03:13:12 PM >To: KR builders and pilots >Subject: Re: Re: KR>Glass cockpit-IFR etc.-Long > >I have heard several opinions on IFR in a KR ranging from it can be done >but >is a lot of work all the way to you will die if you even attemp it. I haven >t flown mine yet so my opinion is worth what you paid for it, but here it >is > > >The first thing I bought to add to my KR after I got it was a turn >coordinator. I consider this instrument mandatory in any plane that has no >other gyro instruments. Simply put, when you accidently get stuck in the >soup one day the TC and your previous practice under the hood with it will >probably save your life. Keeping the sunny side up without it or any other >gyro instruments is a toss of the dice at best. With just the TC and >partial >panel training from an instructor you have a very good chance of seeing >tomorrow. > >I left holes in my panel for an attitude indicator and heading indicator, >but am holding off on the vacuum pump and instruments right now. After I >get >some time in the plane I will see how easy it is to fly under the hood with >just the TC. If I can keep the sunny side up and the nose pointed in the >right direction fairly easily I will get the vacuum instruments to make it >IFR. If I can't comfortably fly it partial panel then I won't bother making >it IFR. > >Before I get flamed, I realize that the KR is not an IFR cross country >plane > I would only want it IFR for getting up and down through cloud layers, >etc. > >-------Original Message------- >From: Dana Overall <bo12...@hotmail.com> >Sent: 04/24/03 05:12 PM >To: kr...@mylist.net >Subject: Re: KR>Glass cockpit-IFR etc.-Long > > > > > I did leave one "opinion" (there we go again, everybody has one) >concerning > >the post about the IFR........I wouldn't build a KR with hard IFR in mind. > > > >_______________________________________________ >see KRnet list details at http://www.krnet.org/instructions.html >. _______________________________________________ >see KRnet list details at http://www.krnet.org/instructions.html _________________________________________________________________ Add photos to your messages with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail
