---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Wed 09/04/19: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:46 AM - Tailplane freeplay (tarnish7) 2. 06:25 AM - Re: Tailplane freeplay (n7188u) 3. 02:54 PM - Re: Re: Tailplane freeplay (Bob Harrison) 4. 03:57 PM - Re: Tailplane freeplay (tarnish7) ________________________________ Message 1 _____________________________________ Time: 12:46:37 AM PST US Subject: Europa-List: Tailplane freeplay From: "tarnish7" Question for you experienced and knowledgeable guys. I noticed vertical freeplay in the tailplanes of my XS Mono, Standing at the tip of the left tailplane facing the fin, I can lift the tip about 12 mm and when it stops moving there's a small but definite "clonk". Mods 58 (trim tab drive pins) 62 (tailplane torque tube pins and 70 (mass balance arm) have not been embodied. I took the torque tube out - fun job, that - and the good news is that the bellcrank (TP9) and tailplane drive plates (TP5) are a good tight fit with no play and on TP 9 and tightly fitted pins. The plastic sleeves are a loose fit on TP9 but there's negligible sideways free play on the assembly when installed, so they're correctly positioned laterally. The vertical freeplay I noticed appears to be coming from the fit between the TP5 drive plate and the TP11 bearing bonded to the fuselage with the left side showing a bit more freedom than the right side. So, the exam question is, what's an acceptable level of vertical freeplay arising from a less than perfect fit between TP5 and TP 11? The aircraft's done about 300 hours total time since build in 2003. I didn't build it, I bought it much later. Any feedback would be valuable, thanks. -------- Keith Hartley Read this topic online here: http://forums.matronics.com/viewtopic.php?p=491175#491175 ________________________________ Message 2 _____________________________________ Time: 06:25:17 AM PST US Subject: Europa-List: Re: Tailplane freeplay From: "n7188u" Look at this posting http://forums.matronics.com/viewtopic.php?t=16770574&highlight=play My tail plane is also a clunker and I have zero hours on my plane. I got good replies on my post just like yours. If I recall correctly, as long as the play is not on the pitch control (torque) axis it should be ok but what is unknown to me is at what point it is too much. I was advised to move on as it is and keep an eye on it which Im doing. In my case, the bearings are ok but the bearing surface in the pitch tube on one side is a few thou smaller causing noticeable play at the stab tip. I measured everything and have the data but its been a while and at this point I really dont even think about it although annoying it is. Chris Read this topic online here: http://forums.matronics.com/viewtopic.php?p=491183#491183 ________________________________ Message 3 _____________________________________ Time: 02:54:34 PM PST US From: "Bob Harrison" Subject: RE: Europa-List: Re: Tailplane freeplay Hi! When I bonded in my bushings I embodied grease nipples and in the event of any slack appearing a shot of grease removes any such concerns. Regards Bob Harrison. -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of n7188u Sent: 04 September 2019 14:24 Subject: Europa-List: Re: Tailplane freeplay Look at this posting http://forums.matronics.com/viewtopic.php?t=16770574&highlight=play My tail plane is also a clunker and I have zero hours on my plane. I got good replies on my post just like yours. If I recall correctly, as long as the play is not on the pitch control (torque) axis it should be ok but what is unknown to me is at what point it is too much. I was advised to move on as it is and keep an eye on it which Im doing. In my case, the bearings are ok but the bearing surface in the pitch tube on one side is a few thou smaller causing noticeable play at the stab tip. I measured everything and have the data but its been a while and at this point I really dont even think about it although annoying it is. Chris Read this topic online here: http://forums.matronics.com/viewtopic.php?p=491183#491183 --- This email has been checked for viruses by AVG. https://www.avg.com ________________________________ Message 4 _____________________________________ Time: 03:57:29 PM PST US Subject: Europa-List: Re: Tailplane freeplay From: "tarnish7" Thanks for the quick replies guys, much appreciated. I'm happy that the torque tube integrity is fine (and while I have it out I'll embody the mods) and there's no flutter of control resonance risk with that freeplay so I can understand Chris' advice to leave it and keep an eye on it, but I'd still like to know what constitutes "acceptable" - I still don't like something that "clonks" when I wobble it! Keith -------- Keith Hartley Read this topic online here: http://forums.matronics.com/viewtopic.php?p=491197#491197 ------------------------------------------------------------------------------------- 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.