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  • Users: qmechanics
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  1. qmechanics

    need a diy strain gage

    Hi, Recently had an issue with a wear mark on the airframe on a helicopter. Thanks for all the help with that issue. It under control now. I'd like to put a strain gage on the airframe at the point of the wear mark just to make sure the applied forces are what I calculated them to be. I've done...
  2. qmechanics

    airframe wear concern

    Just had an incident where a actuator motor housing had been rubbing against part of an welded (4130 chromoly) frame. I've since moved the motor but it left a wear mark about 1/8 inch wide and 1/4 inch long and .006 to .010 deep. the chromoly had an OD of .765 and is .047 thick. I'm wondering if...
  3. qmechanics

    Help with abrasive wear

    Hi, Recently had an incident where a brass motor casing rubbed against an airframe made of 4130 chromoly. The chromoly is tubing of OD .765 inches. tubing is .047 thickness. The wear mark is approxiametly .006 to .010 inches deep an area about the size of a drop of water. I wonder how much this...
  4. qmechanics

    rotor blades

    Hi, Can anyone tell me how much 6063-T6 aluminum will warp when heated to 260F for 2 hours? I'm building a jig that will require heating and need to factor in wrapping during heating. Thanks.
  5. qmechanics

    Making rotor blades

    Hi all, I'm in the process of building composite rotor blades for an existing helicopter. I know all the aircraft particulars (gross weight, engine hp etc) and know about the existing metal rotor blades but I'm in need of assistance and insight into the conversion from metal to composite...

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