jeanphilippeneel(at)yahoo
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 Posted: Mon Jun 25, 2007 2:48 am Post subject: Re : TP12 |
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Merci Klaus
Il y a des hommes d'avant garde qui trouvent tout de suite la bonne solution !
As tu ecris quelque chose sur la methode pour realiser ce collage
Amitiés
JP
----- Message d'origine ----
De : Klaus Dietrich <klaus.dietrich(at)oracle.com>
À : Europa-List Digest Server <europa-list(at)matronics.com>
Envoyé le : Lundi, 25 Juin 2007, 11h15mn 01s
Objet : TP12
in 1999 I glued my TP12 on to the TP4 torque tube using Loctite 603, because I had some play (less than 1/2"); today and some 700 hours later I can report that this fix proved itself as I have 0 play!
Klaus
(MkI, OE-CKD)
Date: Feb 21, 1999 From: Klaus Dietrich <101613.3377(at)compuserve.com> Subject: Re: TP6's | Quote: | | I finaly decided to repair my play in the TP 12 by glueing it to the TP 4 torque tube. I used Loctite 603 (for lightly oil contaminated parts, shear strength 3.700 psi) which I applied on the torque tube on the 10 mm inbord of TP 12. I did this only after careful in-situ testing how to soften the glue again in case of disassembling without heating the aircraft structure or softening the Redux holding the TP 11 bushes. In case you are going this route, here is the way to go: take a halogen bulb of 150W (size: 75 mm long) which will be centrally mounted between two discs (made of some scrap of the firewall material) with a diameter of 34mm. The discs are hold together by two threaded wire rods (2mm diameter) each with a nut on both ends. For the electrical contacts I disassembled the halogene spot (cost Euro 5,--) and used the small metall contacts which I mounted centrally to the discs. The electric cables which are crimped on the contacts are running on each side of the assembly. The complete assembly is than slided into the torque tube and placed exactly under the TP 12 well inboard of the TP 11 bushes, where the glue is. One cable will go to the left and one to the right end of the tube. When you switch on the light, very concentrated heat will be emitted by the bulb which heats the tube from the inside on a length of not more than 70 mm. The Loctite needs about 150=B0C to soften completely. This temperature will be reached easily after 2 to 2,5 minutes. You can than slide the TP 12 out again and swich off the heat. The "firewall discs" help to concentrate the heat and the TP 11 bushes don't get any more than "handwarm" (not more than 40=B0C). Thanks to Jim N. for this idea! It works perfectly. For those who are still building, make shure you are using anchor nuts to fix the servo motor and the trim assembly below as well as shackles or turnbuckles for the safety cables which are holding the counterwight......this will asure you an easy disassembly of all the "mechanics" in the back of the fuselage; something which inevitably will happen sooner or later..... Obviousely you'll need also an access panel at this very strategic place.....You may also file the heads of the pins square to be able to turn them with a spanner to position the hole of the split pin. Have fun...it's just a 10 minutes fix (I'm Ivan's disciple....) Klaus |
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Klaus Dietrich
Oracle Financing EMEA
Tel/Fax: +43 1 33 777 825
http://www.oracle.com/financing
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