Wouldn't it be simpler and less expensive just to use the venturi as an alternate source of vacuum (backup to the pump) for the horizontal gyro, instead of also having a second gyro? Eliacim
> Earl asked about vacuum pump on a Coupe with an O-200 engine and John > Savot > answered: > >> I would never consider venturi if I had a 0-200 with vacuum > >> Pump provisions. You don't need the extra drag with > >> venturi system. > > > > That would make sense to me for a VFR only Coupe. > > > > If you're thinking about certifying your plane for IFR using the plane for > IFR, I've long wondered if it wouldn't be a good idea to have a single > venture running a second artificial horizon (or the turn and bank). I've > read a bunch of articles over the years about the unreliability and > failure > likelihood of the dry vacuum pumps. > > > > Air guard squadron commander and former EOC regional director Russ Jensen > used to fly his Coupe for IFR regularly and told me it worked well. > > > > Just a thought for discussion and lurkers. > > > > Ed Burkhead > > http://edburkhead.com/Ercoupe/index.htm East Peoria, Illinois > > ed -at- edburk???head.??com (remove the ? marks and > change -at- to @) > > > >
