---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sun 08/11/13: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:00 AM - Spares (Alan Carter) 2. 05:26 PM - Re: Gusset plates (Bud Yerly) ________________________________ Message 1 _____________________________________ Time: 04:00:30 AM PST US Subject: Europa-List: Spares From: "Alan Carter" Hi All. This is just a little help for those other owners who have not built the plane. A few spare nuts and bolts is well worth having. I have just purchased these form Parts for aircraft, and only a few pounds so good value. Wheel Spates, Dome headed screw w/integrated washer, AN525-10R8. Cowling, C/S Machine Screw, MS24693-C272 , 1/2" 5/8" or 3/4" Cowling, C/ST Tinnerman Washers, A3235-55-020 These washer are thinner than my original washers, and have a diameter of 20 mm, also I note that the central C/S hole is 5 mm, my old were 6 mm. The 5mm hole allows the washer to sit much neater and thinner, and flush to the surface on all sides, I purchased 20 at about 4 Just a bit a useful info . Regards Alan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=406430#406430 ________________________________ Message 2 _____________________________________ Time: 05:26:26 PM PST US From: "Bud Yerly" Subject: Re: Europa-List: Gusset plates Jimmy, Some time ago, the factory went to another exhaust manufacturer CKT Aero engineering and they did a good job of remanufacturing our exhaust with thicker, better stainless steel, better muffler supports and less stress on the mandrel bends of the pipes. CKT also makes systems for most of the Rotax powered kits in Europe. Too bad we all had the older exhaust sold to us before which cracked at the exhaust, pipes and everywhere for mostly harmonic reasons . The only problem with the CKT exhaust was the springs, which were standard motorcycle carbon steel type, now he makes a stainless steel spring to try to get better longevity. CKT stands behind their products and has taken care of me. Note: In certified aircraft we put RTV or high temp red silicone on the springs to reduce vibration harmonics. I run a piece of safety wire through the spring and pull it up loosely. This keeps any fatigued springs from becoming FOD. Some History: The 912S harmonics cause the exhaust to move laterally a bit and that will fatigue crack in the bend of the exhaust of any system and if the springs were made tighter, the muffler supports cracked. We all know how bad the aluminum heat shield was. Also the 914 had some real problems but over time, metal bends went to welded seams and we have been trouble free. The original 912 exhaust was kept as light as possible, but the vibration and harmonics caused fatigue cracks at very low time. My first experience was with Ira Rampil's exhaust which cracked in about 4 places. Chris at CKT replaced the old exhaust with his and we went through some teething pains with it but not too bad except for spring failures on the right side of the engine. Contact Europa for the new exhaust system and clear up your problems, but expect it to cost about $1000 US or about 660 UK Pounds. Bud ----- Original Message ----- From: James Kelly To: europa-list@matronics.com Sent: Saturday, August 10, 2013 6:07 PM Subject: Re: Europa-List: Gusset plates Hi Bud, It appears that there's always problems with Europa exhaust pipes cracking near the manifold, any ideas why this is so prevalent ? Jimmy On Sat, Aug 10, 2013 at 9:34 PM, Bud Yerly > wrote: Tony, If you have a gap but the plate is parallel or close to parallel to the tube you can put a small joggle in the steel. However then your bolt hole to edge distance becomes critical on the wood glass gusset. If there is still good edge distance you'll be OK. Another method is to put a filler strip to take up the gap of steel. Just a short strip with a couple holes in it match drilled will do. It should only add a bit of time and be more than secure. All one is looking for is to keep the tube stable. Best Regards, Bud Yerly ----- Original Message ----- From: Tony Renshaw To: europa-list@matronics.com Sent: Saturday, August 10, 2013 2:00 AM Subject: Europa-List: Gusset plates > Gidday, I am having trouble with the gusset plates. I used the 12 ply supplied and shaped it accordingly, except I have about a 5 mm gap from ply to tie rod. The cloth will take up approx half of that. So, I bonded on the ply and then layed up the 4 plies of BID, which in essence thickens the ply by 8 plies. So, now that its all done I have a 2-3 mm gap +/- and the gusset plates do not sit parallel. For the other side I lightly clamped the plates together as the BID cured, in situ, and they were covered in Canauba Wax for a release agent. So, that side is OK, but the first side I have a problem I am hoping I can use Redux and Flox to pack out both the gap between rod and ply, and also to create a flat bed for the gusset plates. I am wondering this would be considered an acceptable way to fix things? I know Redux and Flox is a pretty tough mix and the loads in this region I do not consider will challenge what I am doing, as something would have already broken, like a wing! 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