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Hercpilot

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Posts posted by Hercpilot

  1. Anyone mod their O-235 conical mount for use with an O-320 upgrade? If so, what needs to be done, specifically to the mount, to accommodate the heavier motor? I am fully aware of the extrusion strengthening requirements.

     

    Justin

  2. TMann,

    I guess that is the question before me. Until reading the NTSB reports, I really had not even considered it. I think I may revisit the idea. Do the facet type pumps allow for fuel flow in the event of failure? Would the pump need to be on all the time or just during critical phases of flight?

     

    Justin

  3. I am aware of the need to switch to the fuselage tank in a descent with minimum fuel in the wing tanks. I am just curious where the NTSB investigator found the information that they state in their respective reports pertaining to either a sump or fuel pump in the varieze.

     

    Justin

  4. I guess I may need to be more specific. I have yet to find in the varieze plans, the requirement to install either an electric pump or a fuel sump. Am I just overlooking those instructions either in the plans or CP's?

     

    Justin

  5. I was recently reviewing some varieze accidents and noticed that there were a couple of statements in the narrative portion of each report that I was unaware of. Can someone enlighten me on the accuracty of these statements.

     

    "The aircraft designer specifies that the aircraft be equipped with both an engine driven fuel pump and an electric auxillary fuel boost pump because of the limited headspace between the tanks and the engine."

     

    "The early models of varieze aircraft are subject to unporting the fuel tank line when operating with minimum fuel. Later models have a tank sump to correct this condition."

     

    Justin

  6. For those of you who are using a blade-type transponder antenna, where are you mounting the antenna? My aircraft is setup for NACA cooling. I was wandering if the antenna would affect airflow through the scoop if I positioned the antenna just prior to start of the scoop.

     

    Justin

  7. First off let me say that I am no aerodynamicist! Now then, this is what I understand to be happening. The curved tips on the canard are acting like mini winglets and extending the wake vortex aft of the canard tip therefore serving to reduce drag from the lift produced by the canard. The curved down tips that you are referring to are for the purpose of STOL. They serve to contain the high pressure air and produce more lift at a slower speed. Someone please correct me if I am wrong!

     

    Justin

  8. Per AC 20-139 Section 8....

     

    "Commercial Assistance on Incomplete Aircraft. Commercial assistance does not include the instance where an incomplete aircraft is sold to another builder and the second or subsequent builder completes the aircraft. In such a case, the work performed by the first builder will count toward completion of the major portion by the second builder. The second or subsequent builder should obtain as much detailed information and documentation e.g., logbooks, material receipts, pictures, etc., from the original builder as possible. This information will be helpful in the FAA’s determination for the major portion requirement of the aircraft and eligibility of the subsequent builder to meet the requirement for repairman certification under section 65.104. The second builder may not be eligible for a repairman certificate under section 65.104, unless it can be shown to the satisfaction of the FAA that the individual has the requisite skill to determine whether the aircraft is in a condition for safe operation."

     

    Justin

  9. While pressure testing the fuel tanks on my varieze, I discovered a leak around the vent lines just as they enter the fuselage side going into the tanks. Any suggestions on how to fix this problem other than the obvious of removing and replacing.

     

    P.S. The lines where in when I purchased the project.

     

    Justin

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