---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sat 06/26/21: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:31 AM - Re: Europa Classic Tail Spring Attachment (D McFadyean) 2. 02:43 AM - Re: Re: Europa Classic Tail Spring Attachment (D McFadyean) 3. 07:45 AM - Europa Classic Tail Spring Attachment (Erich Trombley) 4. 09:32 AM - Cushion for XS (Mallard) ________________________________ Message 1 _____________________________________ Time: 02:31:20 AM PST US From: D McFadyean Subject: RE: Europa-List: Europa Classic Tail Spring Attachment In my case the bolt breaks at a location around the top of the steel plate, and just below the inner end of the threaded portion of the bolt. As might be expected. Duncan McF. > On 25 June 2021 at 14:18 Bud Yerly wrote: > > > Ron, > > Many years ago I suggested a modification and all mono's that have go ne through my shop have been modified. It allows a bit more security of th e bolt, prevents bending and crushing of the glass/ply support. The top of the bolt could bend if your metal sleeve is sloppy. So far, my clients ha ve all held up. I'm afraid it has been many months since I've done a tail spring mod. I've attached a drawing that may be some help. > > > > Essentially, I install my spring retaining bolt considerably differen t. Review Mod 43. My additions are to hollow the skin out and lay reinfor cing plys of bid on the belly. I add a 5/16 nominal washer to the recess. > > I then cut and fashion a chrome moly tube reaching the length of the bolt from the metal plate down to the washer in the skin. The 7/16 0.065 w all tube I used had to be reamed out for the 5/16 or 0.3125 inch bolt seeme d to be firm enough to support full bolt torque but I=99m sure that a 0.049 wall is sufficient as the torque on the bolt is about 100-140 inch p ounds which is not terribly high. > > Bud Yerly > > [Diagram Description automatically generated] > > > > -----Original Message----- > From: owner-europa-list-server@matronics.com On Behalf Of Ron Peach > Sent: Friday, June 25, 2021 4:09 AM > To: europa-list@matronics.com > Subject: Europa-List: Europa Classic Tail Spring Attachment > > > ailto:ronpeach1@gmail.com > > > > > Hi, > > > > Anyone had any issues with the tail spring attachment bolt fixing on the Europa classic? > > > > The laid up ply and steel plate on mine appear to have been crushed e ver so slightly but enough for me want to fix immediately. Can't feel any m ovement but when i grab the spring and apply lateral pressure it creaks, in dicating some movement even if I can't feel it. > > > > I read somewhere about a reinforcement fix but can't find the mod on the LAA or Europa club site. > > > > Any help appreciated. > > > > Regards > > > > Ron > > > > > > > > > > Read this topic online here: > > > > https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ffor ums.matronics.com%2Fviewtopic.php%3Fp%3D502598%23502598&data=04%7C01% 7C%7Cb7d92f5084954d59c6b108d937b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C 1%7C0%7C637602055571470781%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQ IjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=c%2FAhVTCdW6P 4lBiYS0ASDZL%2F6CJ0aOUWKUIpvCLs53k%3D&reserved=0 https://na01.safelin ks.protection.outlook.com/?url=http%3A%2F%2Fforums.matronics.com%2Fviewto pic.php%3Fp%3D502598%23502598&data=04%7C01%7C%7Cb7d92f5084954d59c6b10 8d937b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637602055571470781 %7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haW wiLCJXVCI6Mn0%3D%7C1000&sdata=c%2FAhVTCdW6P4lBiYS0ASDZL%2F6CJ0aOUWKUI pvCLs53k%3D&reserved=0 > > > > > > > > > > > > > > - The Europa-List Email Forum - > > Photoshare, and much much more: > > --> https://na01.safelinks.protection.outlook.com/?url=http%3A%2 F%2Fwww.matronics.com%2FNavigator%3FEuropa-List&data=04%7C01%7C%7Cb7d 92f5084954d59c6b108d937b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C 637602055571470781%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2lu MzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=JRn40WAMQ%2BDxIXjrTQ7 D4HWAEeJC2%2BZhY9OS%2BfVP14A%3D&reserved=0 https://na01.safelinks.pro tection.outlook.com/?url=http%3A%2F%2Fwww.matronics.com%2FNavigator%3FEur opa-List&data=04%7C01%7C%7Cb7d92f5084954d59c6b108d937b0fdc9%7C84df9e7 fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637602055571470781%7CUnknown%7CTWFpbGZs b3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C10 00&sdata=JRn40WAMQ%2BDxIXjrTQ7D4HWAEeJC2%2BZhY9OS%2BfVP14A%3D&res erved=0 > > - MATRONICS WEB FORUMS - > > --> https://na01.safelinks.protection.outlook.com/?url=http%3A%2 F%2Fforums.matronics.com%2F&data=04%7C01%7C%7Cb7d92f5084954d59c6b108d 937b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637602055571470781%7 CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwi LCJXVCI6Mn0%3D%7C1000&sdata=JaHkYQRPxUWdZtJQ2KUPTSzOspvWQyb7%2FDYUKgt DvAs%3D&reserved=0 https://na01.safelinks.protection.outlook.com/?url =http%3A%2F%2Fforums.matronics.com%2F&data=04%7C01%7C%7Cb7d92f50849 54d59c6b108d937b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C63760205 5571470781%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJB TiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=JaHkYQRPxUWdZtJQ2KUPTSzOspvWQ yb7%2FDYUKgtDvAs%3D&reserved=0 > > - NEW MATRONICS LIST WIKI - > > Matronics Email List Wiki! > > --> https://na01.safelinks.protection.outlook.com/?url=http%3A%2 F%2Fwiki.matronics.com%2F&data=04%7C01%7C%7Cb7d92f5084954d59c6b108d93 7b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637602055571480778%7CU nknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC JXVCI6Mn0%3D%7C1000&sdata=fNpx%2FOi0GfNYDUwhaa%2F8r69NEZER6EqEeF6DFmO M6z8%3D&reserved=0 https://na01.safelinks.protection.outlook.com/?url =http%3A%2F%2Fwiki.matronics.com%2F&data=04%7C01%7C%7Cb7d92f5084954 d59c6b108d937b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6376020555 71480778%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTi I6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=fNpx%2FOi0GfNYDUwhaa%2F8r69NEZE R6EqEeF6DFmOM6z8%3D&reserved=0 > > - List Contribution Web Site - > > > -Matt Dralle, List Admin. > > --> https://na01.safelinks.protection.outlook.com/?url=http%3A%2 F%2Fwww.matronics.com%2Fcontribution&data=04%7C01%7C%7Cb7d92f5084954d 59c6b108d937b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C63760205557 1480778%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI 6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=za4%2B6kMSaLoYAxqMHHv1UcVuJGOlew jGJTno9KhvMfw%3D&reserved=0 https://na01.safelinks.protection.outlook .com/?url=http%3A%2F%2Fwww.matronics.com%2Fcontribution&data=04%7C0 1%7C%7Cb7d92f5084954d59c6b108d937b0fdc9%7C84df9e7fe9f640afb435aaaaaaaaaaaa% 7C1%7C0%7C637602055571480778%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLC JQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=za4%2B6kMSa LoYAxqMHHv1UcVuJGOlewjGJTno9KhvMfw%3D&reserved=0 > > > > > > > ________________________________ Message 2 _____________________________________ Time: 02:43:01 AM PST US From: D McFadyean Subject: Re: Europa-List: Re: Europa Classic Tail Spring Attachment Both efforts were an attempt to grab the flat end of the tailspring (in the manner of a spanner) to redistribute resistance of the torsional load in the spring. I would be inclined to just add a second steel plate on top of the spring, slightly longer and with the ends bent down and welded to the outer edges of the lower plate. Optional webbing between the two plates can be applied too if you think the buckling loads induced into the top plate wouldn't be sustained. Duncan McF. > On 25 June 2021 at 20:05 Ron Peach wrote: > > > > Duncan, Bud, > > Thanks very much for responding. Bud your mod makes sense but at this stage I'm looking for an easier solution. I am currently planning to replace the original steel plate with an exact copy, re-bonding it to the ply/bid platform and putting in a new bolt (I found indications of light corrosion on the bolt at the point that it passed through the steel plate). > > In Graham Singletons mod (PFA 10371) he mentions using 1/8th sheet bent to form a 1/2" by 1" angle to 'reduce the tendency to bend and crush the plywood/bid reinforcement'. With no other detail, I presume that this would go on top of the steel plate with the bolt passing through it as well. I can see how this mini girder could help spread the load. > > I also read in a report (of a tail wheel failure) that six or seven mono owners had fitted a mod that comprised of two light alloy plates bonded to either side of a block of Paxolin. This was claimed to provided additional lateral support for the bolt. The report stated that this mod was approved by the PFA but I can't find any evidence of that. > > Anyone else out there with knowledge? > > Regards > > Ron > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=502602#502602 > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 07:45:39 AM PST US From: Erich Trombley Subject: Europa-List: Europa Classic Tail Spring Attachment Hi Ron, I posted my solution to the forum a few years ago. Rather than have you sear ch for it I resurrected it from archive. Typical of other Mono folks I too b ent my tail wheel bolt which led me to creating the following mod I performe d over 10 years ago. Never had a problem since. The original design relies o n the AN5-21A bolt to counter the torsional load of the tail spring which is n't ideal as you can attest too. I created a simple mod that takes the torsi onal load from the tail spring and transfers it to the XTW15 steel support p late rather than the AN5 bolt in bending. I installed an aluminum block with a channel milled down the middle (the width and height of the mounting end o f the tail spring) with a through hole in the center to pass the AN5 bolt. A s shown in the attached drawing the block captivates the end of the tail spr ing and transfers the load as described above. The AN5 bolt is now in double shear instead of single shear and bending. A longer bolt is required to rep lace the existing AN5-21A which is too short to pass through the block. That 's it. And it works a treat. You may not even require approval of the mod as it could be considered a really thick washer of sorts. The mod also preven ts the through hole in the bottom of the fuselage in which the AN5 bolt pass es from wallowing out. Also, regarding bonding of the tail spring to the rear stern post I deviated slightly from the instructions. When I originally installed the tail spring I was giving consideration to serviceability and realized if the spring wer e bonded to the stern post I would need to deal with the Redux. Realizing th e benefit of having the additional bearing surface of the Redux I installed t he tail spring per the manual, however, I applied a release to the tail spri ng such that the Redux wouldn't adhere. This allows the tail spring to be ea sily removed without compromising the design. Glad to answer any questions you may have. Regards, Erich N28ET Classic Mono 914 ________________________________ Message 4 _____________________________________ Time: 09:32:44 AM PST US Subject: Europa-List: Cushion for XS From: "Mallard" Does anyone know what the best material is to use for a cushion in the XS to give me a better view over the nose? Also if anyone could give me dimensions (width x depth) for the pilot's seat cushion as I don't have access to my own aircraft till the end of July. Thanks in advance James -------- Seat of my pants Read this topic online here: http://forums.matronics.com/viewtopic.php?p=502608#502608 ------------------------------------------------------------------------------------- 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.