---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Fri 09/04/09: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:43 AM - Firewall (Fred Klein) 2. 02:35 PM - Engine quits at full throttle (Robert Borger) 3. 03:48 PM - Re: Firewall (JR Gowing) ________________________________ Message 1 _____________________________________ Time: 11:43:58 AM PST US From: Fred Klein Subject: Europa-List: Firewall As I futz w/ this unique SS component, why is it I count my blessings that I did NOT attempt a metal airplane? Fred do not archive -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ________________________________ Message 2 _____________________________________ Time: 02:35:07 PM PST US From: Robert Borger Subject: Europa-List: Engine quits at full throttle Fellow Europaphiles: I'm at 10.5 hrs on my XS Monowheel. (Just getting the hang of landing it on pavement) As you can see from the signature block it has a Rotax 914 and Airmaster C/S prop. On the last flight the engine developed a surge and a miss at full throttle at about 500' on takeoff. When I retarded the throttle and surge stopped and miss went away. After immediate RTB, pulled the upper cowl and began an inspection. 1st thing noticed was that it was not really obtaining full throttle. Only about 37.5 in MP. Full throttle is 39 in MP and 37 - 38 in MP is in the unstable range for the turbo controller. That explained the surging. Located the reason the throttle wasn't going to max and fixed it. Also checked both fuel filters. Secondary was fine. Main was had considerable crud so it was replaced. I can now get full throttle. Re-synched the carbs. Runs nice and smooth. Now here's what happened today on a full-power, chocks-in, tail tied down, run-up test. Engine starts immediately. I kept the idle at 2000 - 2100 RPM to warm up. Engine warmed up, all temps and pressures in the green. Prop controller set Auto and T/O. Main and Boost pumps are both on, Advance throttle. Everything is OK up to engine RPM 5790 & MP 36 in. When the throttle is advanced beyond 37.5 in MP the engine quits. Like fuel starved or ignition cuts out. It just quits. Retard throttle back below 37.5 in MP and it re-starts and runs smoothly. Throttled back to 4000 RPM and did a "mag" check. Left-Off drop is about 275 RPM, Right-Off drop is 305 - 310 RPM. Throttle back to idle and shut off ignition, the engine stops and after about 15 seconds there was a large backfire through the exhaust (first time for that!). Engine has only run on 100LL with appropriate amounts of Decalin TCP & Marvel Mystery Oil to help with the lead situation. Oil is still nice and clear. Do any of you Rotax Gurus have a suggestion as to why the engine cuts out when full throttle is applied? Any suggestion for things to check and/or fix? Thanks in advance for your help, Bob Borger Europa Kit #A221 N914XL, XS Mono, Intercooled 914, Airmaster C/S http://www.europaowners.org/N914XL Aircraft Flying! 3705 Lynchburg Dr. Corinth, TX 76208 Home: 940-497-2123 Cel: 817-992-1117 ________________________________ Message 3 _____________________________________ Time: 03:48:42 PM PST US From: "JR Gowing" Subject: Re: Europa-List: Firewall Fred I thought that SS Firewall was the hardest part of the whole job so far! I just could not understand the drawings how it was supposed to fit, especially around the lower end where it is attached with the "P" clips. Good luck and lots of persistence needed. JR (Bob) Gowing UK Kit 327 in Oz ----- Original Message ----- From: "Fred Klein" Sent: Saturday, September 05, 2009 4:42 AM Subject: Europa-List: Firewall > > As I futz w/ this unique SS component, why is it I count my blessings > that I did NOT attempt a metal airplane? > > Fred > > do not archive > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > -------------------------------------------------------------------------------- Checked by AVG - www.avg.com 18:05:00 -- We are a community of 6 million users fighting spam. 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