---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Wed 05/14/08: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:57 AM - Dynon D10 Remote compass Position (colin smallwood) 2. 02:07 AM - Re: Dynon D10 Remote compass Position (josok) 3. 02:22 AM - Re: Dynon D10 Remote compass Position (Raimo Toivio) 4. 02:55 AM - Re: Dynon D10 Remote compass Position (Trevpond@aol.com) 5. 03:20 AM - Re: Dynon D10 Remote compass Position (colin smallwood) 6. 03:33 AM - Fuel tank expansion (Sidsel & Svein Johnsen) ________________________________ Message 1 _____________________________________ Time: 12:57:00 AM PST US From: "colin smallwood" Subject: Europa-List: Dynon D10 Remote compass Position Hi All Help please! Finally calibrating the DI on my D10.To save laptops in flight the remote compass is to be installed Any one fitted the remote compass and if so where was the optimum position? Thanks in anticipation Regards Colin Smallwood G-DEBR ________________________________ Message 2 _____________________________________ Time: 02:07:59 AM PST US Subject: Re: Europa-List: Dynon D10 Remote compass Position From: "josok" I stuck mine in the ceiling. There are no current carrying wires or hardware in the vicinity. Afterward i found out, that the headphones can come too close. Sop if you put it there, put it as far back as possible, so that your headphone will always be at at least a foot away, Regards, Jos Okhuijsen Visit - www.EuropaOwners.org ________________________________ Message 3 _____________________________________ Time: 02:22:27 AM PST US From: "Raimo Toivio" Subject: Re: Europa-List: Dynon D10 Remote compass Position Colin, I am not sure if it was The Optimum Pos, but anyway I installed it (Dynon remote compass) behind the D-panel under the stabilator tube (middle). Under the remote compass I made a special aluminium bracket which was both ways *absolutely* levelled when the plane was supported to the flevel flight position. I glued it to the floor by Sica mass. The remote compass is fixed to the bracket w Nylon screws and nuts - so no any magnetic metal near by. Nylon screws are positioned such a way that it is possible to make some minor adjustments to reposition the remote compass. Seems to work well. If necessary I can take a pic and send it to you. BTW my Dynon=B4s OAT sensor is located far behind the remote compass. Raimo ----- Original Message ----- From: colin smallwood To: matronics Sent: Wednesday, May 14, 2008 10:53 AM Subject: Europa-List: Dynon D10 Remote compass Position Hi All Help please! Finally calibrating the DI on my D10.To save laptops in flight the remote compass is to be installed Any one fitted the remote compass and if so where was the optimum position? Thanks in anticipation Regards Colin Smallwood G-DEBR ________________________________ Message 4 _____________________________________ Time: 02:55:00 AM PST US From: Trevpond@aol.com Subject: Re: Europa-List: Dynon D10 Remote compass Position Hi Colin, Mine is in the roof between the doors, obviously facing fore and aft and works perfectly. regards Trev Pond G-LINN ________________________________ Message 5 _____________________________________ Time: 03:20:56 AM PST US From: "colin smallwood" Subject: Re: Europa-List: Dynon D10 Remote compass Position Jos Thanks for the info Colin do not archive ----- Original Message ----- From: "josok" Sent: Wednesday, May 14, 2008 10:02 AM Subject: Re: Europa-List: Dynon D10 Remote compass Position > > I stuck mine in the ceiling. There are no current carrying wires or > hardware in the vicinity. Afterward i found out, that the headphones can > come too close. Sop if you put it there, put it as far back as possible, > so that your headphone will always be at at least a foot away, > > Regards, > > Jos Okhuijsen > > > Visit - www.EuropaOwners.org > > > -- > Checked by AVG. > 13/05/2008 19:55 > > ________________________________ Message 6 _____________________________________ Time: 03:33:54 AM PST US From: "Sidsel & Svein Johnsen" Subject: Europa-List: Fuel tank expansion I see that steps are taken by several builders to allow the fuel tank to expand and not be "glued" to the front and back of the cockpit module by the bid layups described in the Builder's Manual. I do not wish to pass any judgement on the possible benefits, but there are some issues that I think should be considered: - Judging from my own tank's bulging (not yet critical) and photos seen of others, I have no doubt that the thinner parts of the tank (e.g. tank walls) expand at least 15%. - If the tank's overall dimensions also were to expand this much, there is far from enough space available for it to expand - it would begin pushing on the cockpit module and side/bottom skin and of the fuselage long before it had finished its expansion. - So, on the installations made as per the BM, why has not this happened? Is it because the tank is "glued" to the bid layups? Most probably not - epoxy does not bind well to the tank material, we have learned. - I think the reason is that the tank's overall dimensions do not expand much, if any. The material is permeable, but not porous to the extent that it leaks. Fuel (or certain components of the fuel) gets into the material, but if the material is thick enough, this ingress (for the lack of a better word) stops. Thick material therefore acts as a brake on the expansion - the thicker it is, the less it expands. All edges of the tank are considerably thicker than the panels, and my theory is that the tank therefore holds itself effectively within or very close to within its original dimensions. On my tank, there is no sign that the original edge between the tank bottom (including the saddle) and the tank front panel has changed shape at all, nor expanded. - Making "non-glued" contact between the tank and the bid layups cannot cause any harm, I believe, provided the tank is not permitted to move outside its allocated "box" in the cockpit module. When I built my plane, I had heard that the tank would not be "glued" in place in the long term. I did not find the spacers per the BM to be sufficient to take up any considerable load (they would sit against a soft, thin tank panel only), should the tank slide forward at the bottom. I therefore installed additional spacers further down, going up against the bottom/front panel edge. I did not note what clearance I had originally (not many millimeters), but the tank edge is now touching the spacers on both sides (but not bulged around them). Whether this is caused by slippage of the bond that originally existed between the tank material and the epoxy in the bid layups, or tank expansion caused by the fuel, is unknown. These spacers are, however, a very effective stop against any forward movement of the lower part of he tank as a whole. See attached photos. It should be possible to fit something similar on existing aircraft - probably made of three parts: one glued up against the cockpit module in front, one held against the tank in the back while a thin wedge with glue is driven lightly in between. As always when it does not come from an expert - take this with a healthy dose of salt! Regards, Svein LN-SKJ ------------------------------------------------------------------------------------- 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.