Re: Europa-List: Re: tp9/tp10 retention

[Roger Bull <roger@middlecave.plus.com>]

Hi Richard,

Although now retired I still follow the forum, so I noticed your query.

The new torque tube only came in shortly before I retired at Xmas 2009, 
say mid 2009 from memory, so yours will definitely not be the new 
heavier one.

Best wishes for the build,

Roger Bull

  ----- Original Message ----- 
  From: Richard Churchill-Coleman 
  To: europa-list@matronics.com 
  Sent: Tuesday, March 01, 2011 5:44 PM
  Subject: Re: Europa-List: Re: tp9/tp10 retention


  Hi Phil

  I received a mono kit from Roger in late 2007 and I'm ashamed to say 
that I haven't touched the torque tube yet to know if it is the heavier 
version you describe - and I haven't seen a revised build manual or Mod 
73 exemption that would take it into account - please can you tell me 
when did you get the new version from Roger, to give me a guide as to 
whether mine might be the new version with my kit?

  Thanks
  regards
  Richard


  On 1 March 2011 16:56, flyingphil2 <ptiller@lolacars.com> wrote:

<ptiller@lolacars.com>

    Hi Rowland,

    With regards to the new re-designed torque tube then I have one of 
these.  As Roger put it to me, the new torque tube no longer has any 
torque.

    Basically the whole design has been beefed up and there are now only 
2 pins involved, not 4, see attached photo.

    My main concern when I received this was the weight increase.  My 
numbers are below:

    Old Tube:

    TP4  -  1350g
    2 x TP5 & TP6  -  270g
    TP9  -  200g
    2 x TP12  -  800g
    Total  =  2.620kg or 5.776lb

    New Tube:

    TP4  -  1330g
    2 x TP5 & TP6  -  330g
    TP9  -  1250g
    2 x TP12  -  1060g
    Total  =  3.970kg or 8.752lb  -  52% above original.

    NB.  (Pat Tunney's clamps would add 0.4kg bringing an original 
assembly to 3.0kg).

    My mind was originally put at rest when I was told that monos (or 
conventional taildraggers as my aircraft is likely to be) like having an 
aft c of g and so this additional weight at the back would be ok.  I 
tried not to think about it too much and decided it would be ok ......

    Hope that helps.

    Regards,

    Phil


    Read this topic online here:

    http://forums.matronics.com/viewtopic.php?p=332375#332375


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