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 @)
