Question on wing tube lengths

[Mike]

Hi,
Theoretically you need 3 times the diameter to transfer the moment. I go 6D into the wing (about 15 cm) and never had any problems
Mike
  ----- Original Message ----- 
  From: Todd Schmidt 
  To: discussion at nsrca.org 
  Sent: Monday, June 21, 2004 8:05 PM
  Subject: Re: Question on wing tube lengths


  Lance, I usually go 12" but have seen many shorter. 
  Todd
    ----- Original Message ----- 
    From: Lance Van Nostrand 
    To: discussion at nsrca.org 
    Sent: Sunday, June 20, 2004 11:18 PM
    Subject: Question on wing tube lengths


    Here's a question for anyone that's built a few planes from different manufacturers.  How much wing tube is the optimum to have sticking into each wing?  
       We cut our wings for 9.75" of tube in each wing but that's only because that's the length so that the false rib can support the gear plate.  What if the tube only went into the wing 8"....is that enough to stabilize it?

    I'm thinking of another (of my many) experiments by clipping the wings of an Aries by removing the root.  The wings I have already have a wing tube mounted so I'd be shortening the amount of wing tube that goes into the wing.

    Thanks,
    --Lance
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