---------------------------------------------------------- Commander-List Digest Archive --- Total Messages Posted Tue 04/28/15: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:06 AM - Re: Turbo Commander 777? (Barry Collman) 2. 04:10 AM - Re: Re: Turbo Commander 777? (Barry Collman) ________________________________ Message 1 _____________________________________ Time: 04:06:47 AM PST US From: "Barry Collman" Subject: RE: Commander-List: Turbo Commander 777? Hi Keith, As far as I=99m aware, the Garrett engine was the first choice for the 680T. Neither Ken Hale nor Bill McGinnis have mentioned any other engine being considered. So, hopefully, the use a the PT6 was indeed Urban Legend! Best Regards, Barry From: owner-commander-list-server@matronics.com [mailto:owner-commander-list-server@matronics.com] On Behalf Of Keith S. Gordon Sent: 27 April 2015 16:02 Subject: Re: Commander-List: Turbo Commander 777? Sir Barry, I was hoping you'd weigh in with some history. Question: If the PT-6 was installed on a 680T, then it was already a production turbine model. Swearingen was always busy modifying production aircraft, so it would make sense he would attempt a re-engine program for the rather anemic pre-Century 331 engines. Did the factory go straight to Garret engines? I had heard, and it's probably Urban Legend, that the PT-6 was the first installation. ~KG~ Life is not simple anywhere. Probably less so elsewhere. KHND RNAV Lead FAASTeam, Las Vegas NBAA Access Committee, Chairman Las Vegas Airspace Users' Council, NBAA Rep Las Vegas RNAV Optimization Work Group, NBAA Rep Las Vegas Class B Redesign Committee, NBAA Rep -----Original Message----- From: Barry Collman Sent: Mon, Apr 27, 2015 5:25 am Subject: RE: Commander-List: Turbo Commander 777? Hi Keith, Indeed, the PT6A-20 engine was tested on a Commander but not, to the best of my knowledge, on a 680FL but on a 680T. This was s/n 1583-35 N6523V and an Experimental CofA was issued on June 2nd 1966 and STC SA710SW issued to Swearingen on October 31st 1966. However, the factory discovered that the exhaust heat had damaged the leading edge of the wing and subsequent investigation showed degradation of strength in the aluminum structure clear back to the front spar. The aircraft was declared unairworthy and never flew again. Best Regards, Barry From: owner-commander-list-server@matronics.com [mailto:owner-commander-list-server@matronics.com ] On Behalf Of Keith S. Gordon Sent: 27 April 2015 02:42 Subject: Re: Commander-List: Turbo Commander 777? Adam, One of a long line up of 680 or 690 series Commander re-engine ideas that never got off the ground, at least in a figurative sense. The original turbine match up was PT-6 engines on the 680FL airframe. The specific range was terrible; a switch to TPE-331 series was made. Don't know if the fuel specifics for the Walters are better than the typical PT-6. If they're not, there might be too much of a sacrifice on range. Keith S Gordon Life is not simple anywhere. Probably less so elsewhere. KHND RNAV Lead FAASTeam, Las Vegas NBAA Access Committee, Chairman Las Vegas Airspace Users' Council, NBAA Rep Las Vegas RNAV Optimization Work Group, NBAA Rep Las Vegas Class B Redesign Committee, NBAA Rep -----Original Message----- From: stratobee Sent: Sun, Apr 26, 2015 5:58 pm Subject: Commander-List: Turbo Commander 777? This is an interesting link to a company that wanted to put Walter 601 engines on the Commander, pair it with a 5-blade MT prop. Site hasn't been updated since 2000, so probly not much came of it. Anyone know naything more about this project? Also, what are those winglets? Are they proprietary or some alternative winglet to the normal ones you see? http://www.americanwestaircraft.com/commander.html Also, has there ever been any talk of STCing the MT 5-blade prop for the Turbo Commanders? The MU-2 has that option and it's the same engine.. -------- Adam Read this topic online here: http://forums.matronics.com/viewtopic.php?p=441356#441356 - The Commander-List Email Forum - Navigator to browse Un/Subscription, Photoshare, and much much more: http://www.matronics.com/Navigator?Commander-List - MATRONICS WEB FORUMS - Forums! http://forums.matronics.com - List Contribution Web Site - -Matt Dralle, List Admin. http://www.matronics.com/contribution http://www.matronics.com/Navigator?Commander-List http://forums.matronics.com http://www.matronics.com/contribution -= --> http://forums.matron======= Forum - Navigator to browse List Un/Subscription, Browse, Chat, FAQ, http://www.matronics.com/Navigator?Commander-List ________________________________ Message 2 _____________________________________ Time: 04:10:06 AM PST US From: "Barry Collman" Subject: RE: Commander-List: Re: Turbo Commander 777? Hi Adam, If there is a shot of N55JS with the 5-blade props, then so far it's eluded being included in my collection. Best Regards, Barry -----Original Message----- From: owner-commander-list-server@matronics.com [mailto:owner-commander-list-server@matronics.com] On Behalf Of stratobee Sent: 27 April 2015 20:58 Subject: Commander-List: Re: Turbo Commander 777? N55JS had an inflight breakup after being overloaded 1000lbs in bad turbulence. Don't think the props contributed, but who knows. Is there a photo of it with the 5 blade MT's? -------- Adam Read this topic online here: http://forums.matronics.com/viewtopic.php?p=441395#441395 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message commander-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Commander-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/commander-list Browse Digests http://www.matronics.com/digest/commander-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.