---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Thu 06/18/20: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:26 AM - Propeller? Gearbox? Wow-wow-wow (JonathanMilbank) 2. 07:40 AM - Re: Re: Fuel Tank Fittings (Roger Sheridan) 3. 09:14 AM - Re: Fuel Tank Fittings (Rowland Carson) ________________________________ Message 1 _____________________________________ Time: 07:26:29 AM PST US Subject: Europa-List: Propeller? Gearbox? Wow-wow-wow From: "JonathanMilbank" The title more or less says it all! The engine is a 912ULS with 600 hours total and the propeller is an Airmaster which is serviced/greased every 100 hours as specified and is well balanced. The carburettors are regularly checked with a CarbMate electronic synchroniser and maintained as perfectly matched as possible. The aircraft is delightfully smooth to fly, yet there is a "fly in the ointment". During the last 50 hours or so of flying, a constant "wow-wow-wow" sound, akin to that of a piston twin aircraft with unmatched rpm, has gradually increased. For most flights since the sound first appeared I could level off in the cruise, select "Manual" on the propeller control and reduce engine speed to about 4700 rpm, which reduced the sound oscillation to almost nil. But recently it has become more intrusive, to the extent that further reduction of engine rpm doesn't eliminate the problem. So I'm thinking of removing the gearbox and getting it checked over professionally, in case the dogs or their springs could be the culprits. By the way whenever I do the friction torque check, it always results in a reading of around 45 to 50 N-m. Within the last approx. 20 flying hours I've replaced 2 exhaust springs in different locations, which might be indicative of undesirable vibrations Any advice please before I resort to gearbox removal. I've done it before and know what's involved, but if you believe that it might be a wasted exercise please tell me soon, thanks Read this topic online here: http://forums.matronics.com/viewtopic.php?p=496910#496910 ________________________________ Message 2 _____________________________________ Time: 07:40:32 AM PST US From: Roger Sheridan Subject: Re: Europa-List: Re: Fuel Tank Fittings Whoops that was meant to go direct, not to the list. > On 17 Jun 2020, at 21:06, Roger Sheridan wrote: > > Hi Jim, > > Awesome. > > Does that mean you seriously considered alu fuel lines then chose not to!! > > I see pro=99s & cons to both systems. > > What is super disappointing is the fuel smell I get using Gates Barricade from Amazon > > https://www.amazon.com/gp/product/B00498G5QC/ref=ppx_yo_dt_b_asin_title_ o02_s01?ie=UTF8&psc=1 > > I sometimes wonder if it is counterfeit? > > A UK supplier shows white liner which is not noticeable on my hose. > > https://www.moss-europe.co.uk/fuel-hose-gates-barricade-ethanol-proof-5-16 -id-per-metre-gfh1031x.html > > Your opinions are of interest! > > Regards, > > Roger. > > PS Flew my classic into RAF Waddington today, launch point for the dam buster raids! > > > >> On 17 Jun 2020, at 16:43, h&jeuropa > wrote: >> > >> >> Roger, >> >> If you can't find them in the UK, I'm pretty certain I have them. >> >> Jim >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=496882#496882 >> >> >> >> >> >> >> >> >> >> >> > ________________________________ Message 3 _____________________________________ Time: 09:14:26 AM PST US From: Rowland Carson Subject: Re: Europa-List: Fuel Tank Fittings On 2020-06-17, at 11:08, Roger Sheridan wrote: > I hope to find two of these fuel tank outlet fittings originally produced for Graham Singleton in mod 10823. Roger - I turned up my own versions of these from aluminium bar stock - see: http://www.rowlandcarson.org.uk/aviation/europa_435/making_tank_adaptors.p hp and http://www.rowlandcarson.org.uk/aviation/europa_435/tank_adaptors.php and http://www.rowlandcarson.org.uk/aviation/europa_435/tank_adaptor_c_fitted. php Sorry, I don=99t feel I want to spend the time on making them again just now, but if you are really stuck I might consider it! Alternatively, if you know of or can find a model engineering society in your neighbourhood one of those guys might be happy to do the job for you. I attach my dimensioned drawings of the 3 slightly different adaptors I made. I didn=99t bother to mill flats on them as I didn=99t have a milling machine at that time and (although possible) it would have been a bit tedious doing the milling on the lathe. Hope this is of some use. in friendship Rowland | Rowland Carson ... that's Rowland with a 'w' ... | http://www.rowlandcarson.org.uk | Skype, Twitter: rowland_carson Facebook: Rowland Carson ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.