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Correction of Model 5 specs

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  • Correction of Model 5 specs

    Last night Bob remembered something about his original drawings for the Model 5 that we both had forgotten. The main fuel tanks in the Model 5 will be 35 gallons each. Not the same 27.5 gallons like in the Patrol & Model B. And with the aux tanks 89 gallons will be available. LOT of stinking fuel. Mark

  • #2
    Mark,
    just to make sure I’m understanding what you’re saying is the total capacity with aux tanks 92 gal (35+35+11+11) with 89 gal usable out of the 92?
    Todd Stovall
    PP ASEL - IA
    RV-10 N728TT - Flying

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    • Mark Goldberg
      Mark Goldberg commented
      Editing a comment
      No. The aux tanks on the Model B Bearhawk and the Model 5 hold 9.5 gallons. So 70 gallons in the mains and 19 in the aux tanks. Total 89 gallons. Almost all should be usable. Mark

    • auburntsts
      auburntsts commented
      Editing a comment
      Thanks Mark for the clarification!

  • #3
    35 gal mains is perfect!!!

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    • m.mooney
      m.mooney commented
      Editing a comment
      Agreed! This is a substantial improvement.

  • #4
    Originally posted by kestrel View Post
    35 gal mains is perfect!!!
    I agree! Might have to put BH5 wings on my plane.

    Scratch Built 4-place Bearhawk. Continental IO-360, 88” C203 McCauley prop.

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    • #5
      Mark;
      That sounds like exactly one rib bay bigger for the mains. Outboard I am assuming? Hard to do on QB B model wings?

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      • Mark Goldberg
        Mark Goldberg commented
        Editing a comment
        That is correct John. One rib bay more. Doing it on an existing Model B wing? Not sure. Probably a Bob Barrows question. You would have a lot of existing rivet holes to deal with. Mark

      • Weldingiron
        Weldingiron commented
        Editing a comment
        Is there still the same number of center ribs, just adjusted spacing or do we lose a center rib altogether?

    • #6
      How is the additional volume achieved in the same wing?
      Todd Weld
      Plans #1515B
      www.facebook.com/N729TW/

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