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Play in tailplane drive - Loctite

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sidsel.svein(at)oslo.onli
Guest

Posted: Mon Sep 10, 2007 5:44 am Post subject: Play in tailplane drive - Loctite

Reference the last few days' thread on the subject  of using Loctite to prevent play in the tailplane drive.

  

 I called Roger at EA04 today, referring to the  message he posted on this forum on July 30th regrading EA04's test of  securing the parts with Loctite, and asked:  "Can I just go ahead and use  Loctite?".

  

 Roger's reply was (as a summary, not an exact  quote):

  

 Hold on - don't do it just yet.  There is a  Service Bulletin coming out shortly, describing how to do it.  Some people  have tried doing it during assembly of the torque tube, but the problem is  that the Loctite sits so quickly.  Before they had the pieces  into their final position, the Locktite stuck.  The SB will  describe how to do it by applying capillary action, without disassembling the  parts.  Probably a degreaser is to be used for cleaning,  still without disassembling.  The 603 will be used - it is quite thin and  of penetrating type.

  

 Regards,

 Svein

 LN-SKJ

  

  

   [quote][b]

s.vestuti(at)virgin.net
Guest

Posted: Mon Sep 10, 2007 12:59 pm Post subject: Play in tailplane drive - Loctite

Hi, Do you Know if we will be forced to Loctite the torquetube together? 

I for one do not want to willingly use loctite, i would prefer to use Bobs clamps as 

removal would be far easier.



steve vestuti G-CEBV #573

Visit -  www.EuropaOwners.org

ptag.dev(at)tiscali.co.uk
Guest

Posted: Mon Sep 10, 2007 1:43 pm Post subject: Play in tailplane drive - Loctite

Steve,

IMHO I can not imaging how anyone could force you to use such a mickey

mouse fix as glue? And what's more I can not imagine the PFA giving its

blessing ? At what loading does it separate? What repeatability of

performance can be shown ? How can degreasing be guaranteed? Unless it

is used for destructive testing! Better use Jubilee clips ...at least

that is a known quantity factor! The PFA wouldn't clear that either !

Regards

Bob Harrison.

PS Sorry but I can not contain my opinion any longer!



--

bill.sue(at)orcon.net.nz
Guest

Posted: Mon Sep 10, 2007 2:55 pm Post subject: Play in tailplane drive - Loctite

Bob,



The whole aeroplane is glued together! That seems to work pretty well.



How are you getting on with your 914?



Rgds



Sue & Bill



R.C.Harrison wrote:

[quote] 



 Steve,

 IMHO I can not imaging how anyone could force you to use such a mickey

 mouse fix as glue? And what's more I can not imagine the PFA giving its

 blessing ? At what loading does it separate? What repeatability of

 performance can be shown ? How can degreasing be guaranteed? Unless it

 is used for destructive testing! Better use Jubilee clips ...at least

 that is a known quantity factor! The PFA wouldn't clear that either !

 Regards

 Bob Harrison.

 PS Sorry but I can not contain my opinion any longer!



 --

ptag.dev(at)tiscali.co.uk
Guest

Posted: Mon Sep 10, 2007 9:51 pm Post subject: Play in tailplane drive - Loctite

Hi! Bill .  

Glue and plastic is acceptable IMHO metal needs welding or adequate bolts/pins.  

914 6n hours done.Quite good but a completely different animal to the Jab.  

Regards  

Bob H G-PTAG  

   

Robt.C.Harrison  

   

   

--

davidjoyce(at)doctors.org
Guest

Posted: Tue Sep 11, 2007 12:35 am Post subject: Play in tailplane drive - Loctite

Bob, The plane relies on an awful lot of 'glue' to stick the bits of glass

together!

Regards, David Joyce, G-XSDJ

---

nigel_graham(at)btclick.c
Guest

Posted: Tue Sep 11, 2007 1:40 am Post subject: Play in tailplane drive - Loctite

Bob,



If I may make the case for the defence .........



Once upon a time in a life far, far away ......I worked for a company

developing and manufacturing anaerobic adhesives. (No ...it wasn't Loctite)

Part of my job entailed setting up an running the lab tests to quantify the

shear and peel strengths of the various formulations under differing

assembly (best case, worst case and typical) cleanliness conditions.

Even though I knew how the adhesive worked, it never ceased to amaze me how

strong this stuff was.

Some test pieces (typically a "ring and pin" for shear testing) would fail

before the adhesive.



One can use many adjectives to describe these adhesives, but "Mickey Mouse"

would be THE most inappropriate.

I CAN imagine the PFA sanctioning their use. Anaerobic adhesives (Loctite is

just one) are a near-perfect engineering solution to our very real

engineering problem.

They tick all the boxes.

They are low cost, simple to administer, lightweight, strong, chemically

resistant and (with the use of suitably masked heat) easy to dis-assemble.

Most importantly for us, there is no requirement for the entire surface area

of the two mating components be completely covered or even completely

de-greased. The surface area of the TP4 is so great, that an anaerobic will

work even if the adhesive does not wick over the entire surface.

Remember that this is being used in addition to (not in place of) the

standard drive pins. The adhesive's only function is to prevent relative

movement - the pins still take the load.



Regards



Nigel (the other one) Graham





--

pjeffers(at)talktalk.net
Guest

Posted: Tue Sep 11, 2007 2:22 am Post subject: Play in tailplane drive - Loctite

Nigel,



Many thanks you for your breath of fresh air on this subject.  I have used

loctite in these areas for some time and it is now nice to hear of its

efficacy from someone who actually knows what he is talking about.



Pete Jeffers



--

paul.mcallister

Joined: 09 Jan 2006
Posts: 177
Location: Waukesha, WI USA

Posted: Tue Sep 11, 2007 4:58 am Post subject: Play in tailplane drive - Loctite

Nigel,



Thanks for the sharing your real world experience on this topic.  I have

used the Lotite 6xx series over a number of years and I never cease to be

amazed what this product can do.



Paul

ptag.dev(at)tiscali.co.uk
Guest

Posted: Tue Sep 11, 2007 2:36 pm Post subject: Play in tailplane drive - Loctite

Nigel

I don't profess to be in the know with respect to this technology and

probably my attitude belongs to another era but I will not succum to

this type of fix. As far as I'm concerned seeing is believing like the

sight gauge item there's no way better of knowing the tank is full than

seeing fuel in the filler neck. I respect what you say BUT unless there

is no clearance between the pins and holes you can not say the pins are

taking the loads. IOW for there to be differential slop present the pins

don't take the load until they hit the other side of the hole so in the

meantime your loctite is taking the load.

I repeat that my experiences with the nose leg spindle and loctite

"cooks it's goose" for me. I'm prepared to be a prat once but there is

no way you catch me twice thanks.

Regards

Bob Harrison.



Robt.C.Harrison

--

nigel_graham(at)btclick.c
Guest

Posted: Thu Sep 13, 2007 5:34 am Post subject: Play in tailplane drive - Loctite

...here you go Bob.



I thought you might appreciate this  



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