Europa-List Digest Archive

Sun 06/07/15


Total Messages Posted: 5



Today's Message Index:
----------------------
 
     1. 03:48 AM - Filling in ends of flap and aileron (jglazener)
     2. 05:29 AM - Re: undercarriage retraction problem (rparigoris)
     3. 06:30 AM - AW: undercarriage retraction problem (A. Buess Aviatik)
     4. 07:56 AM - Re: Filling in ends of flap and aileron (Nigel Graham)
     5. 10:42 AM - Re: Re: undercarriage retraction problem (Rowland Carson)
 
 
 


Message 1


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    Time: 03:48:20 AM PST US
    Subject: Filling in ends of flap and aileron
    From: "jglazener" <j.glazener@planet.nl>
    For aesthetic and aerodynamic reasons I want to fill in the end ribs of the flaps and ailerons. The standard way to do that is cutting blue foam to size, making flox corners and finishing with two layers of bid. Given that it is non structural, would it not be easier and lighter just to fill it up with a stiff epoxy / micro mix? Anybody done that, and might there be good reasons NOT to do it? -------- Jeroen http://www.europaowners.org/main.php?g2_itemId=44165 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=443178#443178


    Message 2


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    Time: 05:29:52 AM PST US
    Subject: Re: undercarriage retraction problem
    From: "rparigoris" <rparigor@suffolk.lib.ny.us>
    Hi Group Here's some info on over-center in gallery: http://www.europaowners.org/main.php?g2_itemId=27433 Ron Parigoris Read this topic online here: http://forums.matronics.com/viewtopic.php?p=443182#443182


    Message 3


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    Time: 06:30:08 AM PST US
    From: "A. Buess Aviatik" <ykibuess@bluewin.ch>
    Subject: undercarriage retraction problem
    Hi Rowland In the (old) Europa Aircraft News(letter) No 23 there is a recommendation made by Any Draper about how to proceed when there is a conflict between the brake master cylinder and the mono tire (see page 11). This seemed to be a known problem with some kits. I had this problem too and had to reposition the master cylinder. Neville Eyre gave me a detailed instruction. Let me know if you need it, I could make a PDF and send it to you. Regards, Alfred Alfred Buess CH-3700 Spiez, Switzerland Europa XS HB-YKI, Ercoupe 415-E N94804 -----Original Message----- From: Rowland Carson Sent: Saturday, June 06, 2015 9:47 PM Subject: Europa-List: undercarriage retraction problem --> <rowlandcarson@gmail.com> Ive finally managed to satisfy myself that the flaps are operating over the correct range, and moved on to installing the undercarriage. After fitting the LG02 swinging arm to the LG01 mounting frame, I was still (just) able to operate the retract lever without any bungee assistance. Then I fitted the wheel and brake to LG02 and of course that made it too heavy to retract without the bungee. Yesterday I fitted the bungee and was pleased to find a number of loops and tension that nicely balanced the weight of the undercarriage and allowed the lever to operate quite easily. However, I couldnt quite get the lever into the up gate. Examination of everything showed that (1) the tyre was hitting the brake master cylinder and its elbow connexion and (2) the brake slave cylinder was catching the rudder cable. Initially it looked as if LG02 might be too far to starboard, but I had taken care when fixing LG01 into the fuselage to have LG02 temporarily fitted, and inserted packing to keep LG02 equidistant from the tunnel at each side. The other possibility that occurred to me was that (despite careful measurements against the manual callout) Id pre-compressed the LG06 suspension block at bit too much, causing the distance between the LG08 pivots and the LG02 pivots to be too small, thus making the LG02 swinging arm retract too far. I tried backing off the M8 stiffnuts a little (which involved removing and re-installing the bungee again - nobody mentioned how hard it is to thread the bungee around LG02B anchor tube) and that did seem to allow a little but more movement in the up direction but nowhere near enough to get the lever into the up gate. While looking at everything after that adjustment, it seems that the linkage is not quite going over-centre in the down position - it appears the 3 pivots are just about in line with each other. I wonder if lengthening the suspension assembly has caused that. Can anyone suggest what I might be doing wrong, please, or any way to solve the problem? in friendship Rowland | Rowland Carson ... that's Rowland with a 'w' ... | <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk | Skype, Twitter: rowland_carson Facebook: Rowland Carson | pictures: http://picasaweb.google.com/rowlandcarson


    Message 4


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    Time: 07:56:00 AM PST US
    From: Nigel Graham <nigel_graham@m-tecque.co.uk>
    Subject: Re: Filling in ends of flap and aileron
    Hi Jeroen, I did this with both the flaps and ailerons. It's very easy to do, adds negligible weight and the finished result looks very professional. I would recommend blue foam over ladling in the filler every time. Just lay the prepared foam sheet (cut slightly thicker than the close-out to be filled) on the floor, stand the flap end-on onto the foam and tap it hard with the palm of your hand, this will leave an imprint of the required profile in the foam, cut it out, fettle to fit, bond it in and leave it. The next day you just block down the foam to the laminate edge and lay up as you described. You should get the whole lot done in a day. m.v.g. Nigel On 07/06/2015 11:44, jglazener wrote: > > For aesthetic and aerodynamic reasons I want to fill in the end ribs of the flaps and ailerons. The standard way to do that is cutting blue foam to size, making flox corners and finishing with two layers of bid. Given that it is non structural, would it not be easier and lighter just to fill it up with a stiff epoxy / micro mix? Anybody done that, and might there be good reasons NOT to do it? > > -------- > Jeroen > > http://www.europaowners.org/main.php?g2_itemId=44165 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=443178#443178 > >


    Message 5


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    Time: 10:42:12 AM PST US
    Subject: Re: undercarriage retraction problem
    From: Rowland Carson <rowlandcarson@gmail.com>
    On 6 Jun 2015, at 19:21, JonSmith <jonsmitheuropa@tiscali.co.uk> wrote: > Rowland, just a further thought, you haven't set it up so that it's trying to retract the wheel too far/ too high? Whereas the undercarriage downlock gate and set up IS critical I don't think the exact position of the undercarriage lever UP lock gate is quite so important. Obviously you want it up as much as possible and not too low but it can't of course go up too far. Adjusting the rear latching face of the upgate rearwards slightly would mean the wheel wouldn't lock up quite as far but it might then not foul the items you mentioned. You would then have to completely re-set up the flap retraction adjustment again with probably a new flap retraction horn etc.! Jon - thanks for your message (and thanks too to Alan, Keith, Ron and Alfred for their helpful contributions to this topic). I was coming to the same conclusion as you, that the slot for the retract lever must be slightly too long. Not sure why this should be as my journal (and my memory!) doesnt seem to indicate that I extended the slot from the as-supplied state. Anyway, I think that will be the answer to my problem - in effect, dont try to retract the gear so much! As you say, once I have restored the suspension block compression to the correct value and checked for correct over-centring of the mechanism in the down position, Ill have to file the up" gate so that the lever latches _before_ any contact between the U/C and other parts. Then go back to the flap control; first get a new FL19 from the factory then go through the whole adjustment process again to find the right position for the hole in FL19. Once its all done, I wonder would there be any need to provide some sort of stop to prevent the retract lever moving too far forward? I think Ill worry about that when I see how much aftwards extension of the up gate is needed. Thanks again to the Europa community for all your help and encouragement. in friendship Rowland | Rowland Carson ... that's Rowland with a 'w' ... | <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk | Skype, Twitter: rowland_carson Facebook: Rowland Carson | pictures: http://picasaweb.google.com/rowlandcarson




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