Hi Tony,
I spoke Andy from Europa 2004. He told me that a (mandatory) modification on
the mass balance arm will be available soon. Europa is testing a few
prototypes (6) at this moment. After approval of the PFA, the mod will
become available for all Europa's. In a few weeks we will all know more
about the approved modificated mass balance arm. There is a good change that
a prototype without cables will be the final solution.
If you wait a few weeks, it may safe you a lot time right now.
Regards, Tim.
Heerhugowaard,
PH-JAI
460 XS TG 914UL Airmaster
----- Original Message -----
From: "Tony Renshaw" <tonyrenshaw@optusnet.com.au>
Subject: Europa-List: Mass Balance Arm Cable Attach
> <tonyrenshaw@optusnet.com.au>
>
> Gidday,
> I am studying my tailplane setup and wondering if it is normal to have the
> cables that stabilise the mass balance arm wrapped around the white
> plastic
> tubes in such a fashion that the looping creates an overlap on the back
> edge of the plastic sleeve, held in position under tension only by the
> small protrudence of the pin base? Now I am unsure which way the pins
> should be, but I have decided that I want the heads of my pins forwards,
> as
> I have little holes adjacent in the rear tail bulkhead that will be
> accessible from another hole in the sternpost, so that I can use a long
> rod
> to tap them out again in the future, plus also drive them home from within
> the tail. This is probably the normal way anyway, to have the heads facing
> forwards, but I haven't reviewed the manual on this as I have my own
> intentions anyway. So, I do however have the problem that if the cable was
> to flex on one side, it could enable the slack side to slip inboard over
> the tail of the pin. Whether this would ever happen is probably the
> question to ask, as it would mean that the other cable under tension would
> have to stretch to allow the other to go slack. I suppose this then begs
> another question which is how tight to make these cables. I have
> turnbuckles, so I can tweak them until they are tight as I like. Is there
> any advice as to how tight is enough an not too much. I suppose the
> tighter
> the less likelihood of further stretching which is what I am trying to
> negate with a lateral load, which is of itself a questionable load anyway.
> How am I going to fly my plane in such a fashion that I get a lateral load
> of sufficient strength that it allows one cable to stretch and the other
> to
> go slack and slip over the tail of the pin. My aircraft probably would
> break elsewhere. I am simply seeing the length of my pins as being
> apparently inadaquate to also act as a containment
>
>
>
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