--> Europa-List message posted by: "flyingphil2" 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 Attachments: http://forums.matronics.com//files/torque_tube_2_109.jpg _-============================================================ _-= - The Europa-List Email Forum - _-= Use the Matronics List Features Navigator to browse _-= the many List utilities such as List Un/Subscription, _-= Archive Search & Download, 7-Day Browse, Chat, FAQ, _-= Photoshare, and much much more: _-= _-= --> http://www.matronics.com/Navigator?Europa-List _-= _-============================================================ _-= - MATRONICS WEB FORUMS - _-= Same great content also available via the Web Forums! _-= _-= --> http://forums.matronics.com _-= _-============================================================ _-= - List Contribution Web Site - _-= Thank you for your generous support! _-= -Matt Dralle, List Admin. _-= --> http://www.matronics.com/contribution _-============================================================