----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
C or D Models? The determination as to the model must be made by an IA... often the airframe conversion details were not complete (the most common "non-conversion" was the limited up-elevator and marking of the airframe data plate. If the 'non-compliance' can be documented, and it has never been "flown" as a 'D' model, then the IA can complete the reversion with your FSDO- but if it has been 'signed off' and 'flown' as a 'D', the FAR's prohibit it being returned to "C' or C/D' status. PS: Stainless steel covering the deader tank was approved on many 'C' models... that is not a disqualifying change. Chuck Rosenfeld N87114 -----Original Message----- From: Ercoupe Technical Discussion (moderated) [mailto:[EMAIL PROTECTED] Sent: Monday, November 27, 2006 12:01 AM To: Ercoupe Technical Discussion (moderated) Subject: Digest list: Ercoupe Technical Discussion (moderated) ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- Message list: 1. Re: [COUPERS-TECH] 415C/D Light Sport Plane ??? 2. Re: [COUPERS-TECH] 415C/D Light Sport Plane ??? 3. Re: [COUPERS-TECH] 415C/D Light Sport Plane ??? 4. RE: [COUPERS-TECH] 415C/D Light Sport Plane ??? 5. [COUPERS-TECH] Sensenich prop info 6. RE: [COUPERS-TECH] Sensenich prop info 7. Re: [COUPERS-TECH] Sensenich prop info 8. RE: [COUPERS-TECH] Sensenich prop info Messages: From: Kim Blackseth <[EMAIL PROTECTED]> To: Ctech <[email protected]> Reply-To: Kim Blackseth <[EMAIL PROTECTED]> Subject: Re: [COUPERS-TECH] 415C/D Light Sport Plane ??? My C coupe was supposed to have been converted to a D coupe in 1971. The FAA Cd shows this conversion. However, if all of the D coupe issues were not completed, i.e. the steel sheet on the header tank, etc, can I challenge the fact it was never properly converted and in fact is still a C coupe? What would be the process for doing so? Kim Blackseth N2332H On Nov 25, 2006, at 6:46 PM, Randy Hougham wrote: > ----[Please read http://ercoupers.com/disclaimer.htm before > following any advice in this forum.]---- > > > There are alot of C coupes that are called D coupes but don't have > the complete conversion. Has the stainless steel sheet ben > installed over the header tank area? > My 415-C has everything like a D except for the stainless steel > over the tank, so it's still only a C. I have a sneaking suspicion > that someone may have done all the changes to my plane then > inadvertently flown it at a 1400lb GW not knowing that the > conversion had not been completed. They probably even told their > friends that they had a D. Who knows? > > Randy ---------------------------- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED], [email protected] Reply-To: [EMAIL PROTECTED] Subject: Re: [COUPERS-TECH] 415C/D Light Sport Plane ??? One thing to check is weather or not it has an 85hp engine. To the best of my knowledge there is no way to have the 85hp with out being a C or higher. I am dealing with a similar issue with my plane and it is not as easily solved as you might think. A lot depends upon the FSDO office and there interpretation of your paperwork. Best of luck, ~Jeff Fallon N789JJ 415D? -----Original Message----- From: [EMAIL PROTECTED] To: [email protected] Sent: Sun, 26 Nov 2006 1:25 PM Subject: Re: [COUPERS-TECH] 415C/D Light Sport Plane ??? ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- My C coupe was supposed to have been converted to a D coupe in 1971. The FAA Cd shows this conversion. However, if all of the D coupe issues were not completed, i.e. the steel sheet on the header tank, etc, can I challenge the fact it was never properly converted and in fact is still a C coupe? What would be the process for doing so? Kim Blackseth N2332H On Nov 25, 2006, at 6:46 PM, Randy Hougham wrote: ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- There are alot of C coupes that are called D coupes but don't have the complete conversion. Has the stainless steel sheet ben installed over the header tank area? My 415-C has everything like a D except for the stainless steel over the tank, so it's still only a C. I have a sneaking suspicion that someone may have done all the changes to my plane then inadvertently flown it at a 1400lb GW not knowing that the conversion had not been completed. They probably even told their friends that they had a D. Who knows? Randy ======================================================================== ====== To leave this forum go to: http://ercoupers.com/lists.htm ________________________________________________________________________ Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. ---------------------------- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED], [EMAIL PROTECTED], [email protected] Reply-To: [EMAIL PROTECTED] Subject: Re: [COUPERS-TECH] 415C/D Light Sport Plane ??? Hey Jeff: I believe that you may be wrong about the C-85 in a "C" model. I have not researched it myself, but Ed's article about Ercoupe's states "conversion to 85 hp engines. For model C, see A-718, section Engines and Engine Accessories, paragraph 110." I would check that paragraph, and use that with your FAA specialist to ensure you get your approval for the C-85. There are even a few C models with the 90 HP engine, and my understanding is if you provide a 337 approved prior to 1956, that is the engineering data required for the change. Lynn Nelsen ---------------------------- From: "Ed Burkhead" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>,"Ctech" <[email protected]> Reply-To: "Ed Burkhead" <[EMAIL PROTECTED]> Subject: RE: [COUPERS-TECH] 415C/D Light Sport Plane ??? Jeff, Your FSDO must be suffering from some confusion. The C-85 is clearly and EXPLICITLY allowed in the 415-C and 415-CD by the controlling document, Aircraft Specification A-718. There's a link to that document on my Coupe page - just scroll down to the bottom. http://edburkhead.com/Ercoupe2/index.htm Make sure to note to the FAA staffers that this comes from the FAA website or heck, just print a copy and take it in to wave under their nose. Especially bring to their attention the section on Engines and Engine Accessories, section 110 on page 4: 110. Engines 12 lb. Continental C-85-12 or -12F Engine limits for all operations: 2575 r.p.m. (85 hp.) (Eligible with item 1(c), 3, 4, 6, 7, or 8 propeller only). Eligible on model 415-CD; eligible on model 415-C provided the following are accomplished: (a) Modifications specified under item 106 for installation of C-75 engine. (b) Wide elevator trim tab (1-3/8 in chord) installed per Erco dwg. 415-22031 or narrow trim tab (3/4 in. chord) installed per Erco dwg. 415-22027 (or item 401). Note: Conversion of continental C-75 engine to C-85 must be accomplished in accordance with Continental Service Bulletin M47-16, dated 6-7-48 and the oil sump dip stick recalibrated to indicate full when sump serviced with 4.5 qt. oil. FAA staffers go by the written word of the documents. But sometimes they need help finding the correct written word - there are surely a million times too many pages for them to read and know. Ed Burkhead http://edburkhead.com ed -at- edburkhead???.com (change -at- to @ and remove "???") ---------------------------- From: "scott" <[EMAIL PROTECTED]> To: "Ercoupe Tech" <[email protected]> Reply-To: "scott" <[EMAIL PROTECTED]> Subject: [COUPERS-TECH] Sensenich prop info Does anyone know what this propeller is...ie. climb, cruise...? Sensenich M 76 AK-2 46 Thanks Scott ---------------------------- From: "Ed Burkhead" <[EMAIL PROTECTED]> To: "'scott'" <[EMAIL PROTECTED]>,"Ctech" <[email protected]> Reply-To: "Ed Burkhead" <[EMAIL PROTECTED]> Subject: RE: [COUPERS-TECH] Sensenich prop info Aircraft Specification A-718 (for 415-C and 415-CD) Propellers and Propeller Accessories 8. Propeller - fixed pitch metal, Sensenich M76AK-2 24 lb. (-32) (a) With C-75 engines only. Static r.p.m. at maximum permissible throttle setting: not over 2125, not under 2050. No additional tolerance permitted. Diameter: not over 74 in., not under 72.5 in (b) With C-85 engines only. Static r.p.m. at maximum permissible throttle setting: not over 2250, not under 2175. No additional tolerance permitted. Diameter: not over 74 in., not under 72.5 in It is, therefore, an authorized propeller as long as the static rpm (full power, no wind) is within the listed specifications. (A&P and AI please tell me if I'm telling him wrong.) I'd note that the 46 pitch is pretty flat. It might be an extreme climb propeller. I don't know what was the standard pitch for the propellers originally shipped and authorized with the C-75. For all I know, it could have been the standard propeller for the early models, but I'm guessing it was not. Let's get the rest of the info. Ed Burkhead http://edburkhead.com ed -at- edburkhead???.com (change -at- to @ and remove "???") ---------------------------- From: larry conley <[EMAIL PROTECTED]> To: scott <[EMAIL PROTECTED]>, Ercoupe Tech <[email protected]> Reply-To: larry conley <[EMAIL PROTECTED]> Subject: Re: [COUPERS-TECH] Sensenich prop info Scott, according to the aircraft spruce catalog it's a standard prop for a Cont C90 for a Bellanca 7EC, 7FC, or 7JC. --- scott <[EMAIL PROTECTED]> wrote: > ----[Please read http://ercoupers.com/disclaimer.htm > before following any advice in this forum.]---- > > > Does anyone know what this propeller is...ie. climb, > cruise...? > > Sensenich M 76 AK-2 46 > > Thanks > > Scott > ======================================================================== ====== > To leave this forum go to: > http://ercoupers.com/lists.htm > > > ---------------------------- From: "Ed Burkhead" <[EMAIL PROTECTED]> To: "'scott'" <[EMAIL PROTECTED]>,"Ctech" <[email protected]> Reply-To: "Ed Burkhead" <[EMAIL PROTECTED]> Subject: RE: [COUPERS-TECH] Sensenich prop info Scott, I should have asked what model plane and which engine is this for. So, which is it for? That makes a big difference. If it's model D, E G or later, you need to look at Aircraft Specification A-787 which is also linked through my Ercoupe page. Ed Burkhead http://edburkhead.com ed -at- edburkhead???.com (change -at- to @ and remove "???") ---------------------------- ======================================================================== ====== To leave this forum go to: http://ercoupers.com/lists.htm ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm
