Announcement

Collapse
No announcement yet.

Bensen air speeds

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Bensen air speeds

    Can't find the info I want about Bensens. Please forward what you know. Bensen 72 hp engine.
    AIRSPEEDS
    NORMAL TAKE-OFF
    NORMAL CLIMB
    BEST RATE OF CLIMB
    BEST ANGLE OF CLIMB
    CRUISE
    MAX MANEUVERING
    BEST GLIDE
    NEVER EXCEED
    NORMAL APPROACH

    PERFORMANCE
    TAKE-OFF DISTANCE TO CLEAR 50 FOOT

    FUEL AND OIL
    FUEL GRADE
    MIXTURE FUEL/OIL
    USABLE GALLONS OF FUEL
    CONSUMPTION PER HOUR
    THANKS EARL SHAW earlshaw@rogers.com

  • #2
    AIRSPEEDS:
    NORMAL TAKE-OFF: Don't know , never looked - I was flying. Probably going to be about 25 - 35 IAS.
    NORMAL CLIMB: 45 MPH
    BEST RATE OF CLIMB: 45 MPH
    BEST ANGLE OF CLIMB: 45 mph
    CRUISE: 45 - 60 mph
    MAX MANEUVERING: 45 mph
    BEST GLIDE: 45 mph

    NEVER EXCEED: 65 mph, lol
    NORMAL APPROACH: 45 mph

    Dr. Bensen suggests at 45 mph, the Bensen blades performed at their best.

    PERFORMANCE
    TAKE-OFF DISTANCE TO CLEAR 50 FOOT: Too many factors to determine. Pre-rotation RPM, winds speed on your 12, thrust of engine, density altitude, etc..
    On my Bensen, with a pre-rotate to 100 RRPM, and a 5 mph wind in my 12, 2 - 3 hundred feet to get airborne, get to 45 mph and start climb. robally, 800 - 1000' to clear the obstacle


    FUEL AND OIL
    FUEL GRADE: 100LL "only", never use auto fuel
    MIXTURE FUEL/OIL: 16 oz. petro based 2 cycke oil, 14 oz of Blue Marbles to 5 Gallons 100LL
    my CHT was 50 degrees cooler on synthetic and a smoother idle
    USABLE GALLONS OF FUEL: "ALL OF IT!!!"
    Part 103 - Ultralight = no more than 5 gallons on-board; N numbered "Registered" what ever you can feasibly build into the system
    CONSUMPTION PER HOUR : On my ole 72, I could stretch about 65 minutes out of her. On my 90 - "Quiet" in 53 minutes. 5 gallon tank. Depends on power demands.
    Last edited by Gyro28866; 06-24-2015, 05:17 AM.
    David McCutchen
    615-390-2228
    Bensen B7m, 90 hp Mac
    Dominator Tandem, 100 hp Hirth
    Kolb Mark III Classic, 80 hp Verner
    Certified - Advanced Master Beef Producer
    EAA Member #0511805
    PRA Member #28866
    PRA Chapter 16 Member
    Secretary & Treasure - PRA Chapter 16
    President / Sylvia - Yellow Creek Volunteer Fire Dept.
    Chairmen - Dickson County Veteran's Day Committee
    Volunteer - Dickson County Airport Aviation Day Committee
    2 busy 2 No!

    Comment


    • #3
      thanks no wonder all I found was 45 mph the magic number for everything.
      Earl Shaw

      Comment


      • #4
        I was told by many of the "old" men back when I started in 1983 was "just fly and do not get so slow that you cannot" worked for me all these years !

        Comment


        • #5
          Originally posted by Earl Shaw View Post
          thanks no wonder all I found was 45 mph the magic number for everything.
          Earl Shaw

          It sounds like the flight "envelope" is more of a "postcard". Maybe you could skip the weight of an airspeed indicator and just use a picture of one with the needle at 45 . . .

          Comment


          • #6
            Originally posted by WaspAir View Post
            It sounds like the flight "envelope" is more of a "postcard". Maybe you could skip the weight of an airspeed indicator and just use a picture of one with the needle at 45 . . .
            Ha-Ha-Ha-Ha: Tha is one of the best jokes I've read in some time, Waspair!

            Comment


            • #7
              what are blue marbles?

              Comment


              • #8
                What ya get, when ya fly in the winter!

                David McCutchen
                615-390-2228
                Bensen B7m, 90 hp Mac
                Dominator Tandem, 100 hp Hirth
                Kolb Mark III Classic, 80 hp Verner
                Certified - Advanced Master Beef Producer
                EAA Member #0511805
                PRA Member #28866
                PRA Chapter 16 Member
                Secretary & Treasure - PRA Chapter 16
                President / Sylvia - Yellow Creek Volunteer Fire Dept.
                Chairmen - Dickson County Veteran's Day Committee
                Volunteer - Dickson County Airport Aviation Day Committee
                2 busy 2 No!

                Comment

                Working...
                X