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  • #76
    Ultra lite heli updates...

    I just put on 6 photos of my rotor blades nearing completion. Right now they all weigh within a half ounce of each other. I have to glass them and they will need to be rebalanced again. Getting closer!! The photos are in my album on this forum. Click on my profile then view album for those of you who are interested.
    Nick
    Nick
    Miller 252 Mig
    Miller Cricket XL
    Millermatic 150 Mig
    Miller Syncrowave 200 Tig
    2-O/A outfits
    Jet Lathe and Mill
    Jet 7x12 horz/vert band saw
    DeWalt Multi Cutter metal saw
    Century 50 Amp Plasma Cutter
    20 ton electric/hydraulic vertical press
    Propane Forge
    60" X 60" router/plasma table

    www.youtube.com/watch?v=jTu7wicVCmQ
    Vist my site: www.nixstuff.com
    and check out some of my ironwork and other stuff

    Comment


    • #77
      Helicopter update video

      I finally got to the point after securing and safety pinning most of the bolts
      and fixtures so that I could safely run the engine, drive shaft and rotor head
      components and see how they worked. No rotors at this time. Here is a Youtube
      video

      Here is the link:
      http://www.youtube.com/watch?v=Do9cElBSWjY

      Nick

      PS this is starting to get exciting...and scary....
      Nick
      Miller 252 Mig
      Miller Cricket XL
      Millermatic 150 Mig
      Miller Syncrowave 200 Tig
      2-O/A outfits
      Jet Lathe and Mill
      Jet 7x12 horz/vert band saw
      DeWalt Multi Cutter metal saw
      Century 50 Amp Plasma Cutter
      20 ton electric/hydraulic vertical press
      Propane Forge
      60" X 60" router/plasma table

      www.youtube.com/watch?v=jTu7wicVCmQ
      Vist my site: www.nixstuff.com
      and check out some of my ironwork and other stuff

      Comment


      • #78
        Nick,
        Thanks for posting the video, it was great!!!!

        1. How many hours do you have in the project?
        2. Do you know your cost at this point?
        3. What do your neighbors think?
        4. Do all of the parts have to be balanced?

        This project is amazing. To start from scratch and create a "flying machine" is unreal. Please keep us posted.

        Nick

        Comment


        • #79
          Thanks........It was kind of hard to hold the camera and control throttle at the same time so it's not the best video but the real purpose was to show the parts working at the least.

          1.... no idea how many hours but it's a lot since other than engine, hardware, chain, sprockets, clutch etc, I had to make all the other parts with no plans to go by.
          2...I have never figured cost yet...I already had the engine and most aluminum to make the hubs etc. I had to buy sprockets, chain, bearings, clutch and , lots of grade 8 bolts.

          3....neighbors don't really care. We are on three acre lots and I have trees all around.

          4.......All parts should be balanced but that ain't going to happen. Balancing the rotor blades is absolutely a must. I'll just do the best I can.
          I'll keep ya posted.............Nick
          Last edited by monte55; 09-28-2009, 05:32 PM.
          Nick
          Miller 252 Mig
          Miller Cricket XL
          Millermatic 150 Mig
          Miller Syncrowave 200 Tig
          2-O/A outfits
          Jet Lathe and Mill
          Jet 7x12 horz/vert band saw
          DeWalt Multi Cutter metal saw
          Century 50 Amp Plasma Cutter
          20 ton electric/hydraulic vertical press
          Propane Forge
          60" X 60" router/plasma table

          www.youtube.com/watch?v=jTu7wicVCmQ
          Vist my site: www.nixstuff.com
          and check out some of my ironwork and other stuff

          Comment


          • #80
            Originally posted by monte55 View Post
            PS this is starting to get exciting...and scary....
            I'm not following the scary part... just find a test pilot.

            BTW... Do you plan to free fly, once the rotors are attached, or have you considered suspending it between ropes, until you get the feel for it? The problems encountered with learning to fly a device intuitively are not only in controlling the vehicle's attitude, but also in controlling your excitement. Overcorrecting a change in attitude often leads to crashes.

            BTW2... You've done a remarkable job. I share your excitement. Continued success.

            Comment


            • #81
              I'm curious how you ended up with 4' rotor blades and what calculations did you follow for determining the airfoil's form other than making it look like a wing? How much thrust will the rotors create for your given rpm sweet spot?
              Syncrowave 250DX
              Invison 354MP
              XR Control and 30A

              Airco MED20 feeder
              Thermal Dynamics Cutmaster 81
              Smith O/A rig
              And more machinery than you can shake a 7018 rod at

              Comment


              • #82
                Originally posted by Fishy Jim View Post
                I'm curious how you ended up with 4' rotor blades and what calculations did you follow for determining the airfoil's form other than making it look like a wing? How much thrust will the rotors create for your given rpm sweet spot?
                Four foot rotors was a guess compared to looking at similar type units and that's the longest my cnc can move in the X axis. The shape of the rotor is based on the 8-H-12 airfoil. Don't know how much thrust yet as that will depend on rotor pitch, speed, rpm, and whether the engine is up to the task.
                Nick
                Miller 252 Mig
                Miller Cricket XL
                Millermatic 150 Mig
                Miller Syncrowave 200 Tig
                2-O/A outfits
                Jet Lathe and Mill
                Jet 7x12 horz/vert band saw
                DeWalt Multi Cutter metal saw
                Century 50 Amp Plasma Cutter
                20 ton electric/hydraulic vertical press
                Propane Forge
                60" X 60" router/plasma table

                www.youtube.com/watch?v=jTu7wicVCmQ
                Vist my site: www.nixstuff.com
                and check out some of my ironwork and other stuff

                Comment


                • #83
                  Originally posted by Goodhand View Post
                  I'm not following the scary part... just find a test pilot.

                  BTW... Do you plan to free fly, once the rotors are attached, or have you considered suspending it between ropes, until you get the feel for it? The problems encountered with learning to fly a device intuitively are not only in controlling the vehicle's attitude, but also in controlling your excitement. Overcorrecting a change in attitude often leads to crashes.

                  BTW2... You've done a remarkable job. I share your excitement. Continued success.
                  It will be teathered down while running with rotors untill drive train etc prove
                  to be ok. Then will try with a little slack.
                  Nick
                  Miller 252 Mig
                  Miller Cricket XL
                  Millermatic 150 Mig
                  Miller Syncrowave 200 Tig
                  2-O/A outfits
                  Jet Lathe and Mill
                  Jet 7x12 horz/vert band saw
                  DeWalt Multi Cutter metal saw
                  Century 50 Amp Plasma Cutter
                  20 ton electric/hydraulic vertical press
                  Propane Forge
                  60" X 60" router/plasma table

                  www.youtube.com/watch?v=jTu7wicVCmQ
                  Vist my site: www.nixstuff.com
                  and check out some of my ironwork and other stuff

                  Comment


                  • #84
                    Originally posted by monte55 View Post
                    It will be teathered down while running with rotors untill drive train etc prove
                    to be ok. Then will try with a little slack.
                    Not sure I can wait for the video of your first flying attempt... do you mind if I drive over to watch?

                    Comment


                    • #85
                      Originally posted by Goodhand View Post
                      Not sure I can wait for the video of your first flying attempt... do you mind if I drive over to watch?
                      I'm sure you're joking but early testing will be without spectators for safety reasons.
                      Nick
                      Nick
                      Miller 252 Mig
                      Miller Cricket XL
                      Millermatic 150 Mig
                      Miller Syncrowave 200 Tig
                      2-O/A outfits
                      Jet Lathe and Mill
                      Jet 7x12 horz/vert band saw
                      DeWalt Multi Cutter metal saw
                      Century 50 Amp Plasma Cutter
                      20 ton electric/hydraulic vertical press
                      Propane Forge
                      60" X 60" router/plasma table

                      www.youtube.com/watch?v=jTu7wicVCmQ
                      Vist my site: www.nixstuff.com
                      and check out some of my ironwork and other stuff

                      Comment


                      • #86
                        Originally posted by monte55 View Post
                        I'm sure you're joking but early testing will be without spectators for safety reasons.
                        Nick
                        I've got binoculars.

                        Comment


                        • #87
                          Originally posted by Goodhand View Post
                          I've got binoculars.
                          So.........you're are pulling the old bino ploy? I get it
                          Nick
                          Miller 252 Mig
                          Miller Cricket XL
                          Millermatic 150 Mig
                          Miller Syncrowave 200 Tig
                          2-O/A outfits
                          Jet Lathe and Mill
                          Jet 7x12 horz/vert band saw
                          DeWalt Multi Cutter metal saw
                          Century 50 Amp Plasma Cutter
                          20 ton electric/hydraulic vertical press
                          Propane Forge
                          60" X 60" router/plasma table

                          www.youtube.com/watch?v=jTu7wicVCmQ
                          Vist my site: www.nixstuff.com
                          and check out some of my ironwork and other stuff

                          Comment


                          • #88
                            Nicks heli short test

                            I put the two lower rotor blades on the heli and did a short and limited
                            rpm runup. First I noticed some vibration which I need to figure out. The
                            centrifigual clutch has a spacer bearing that is like a sprague clutch for lack
                            of better description. I'm not quite sure exactly what purpose it served in its
                            4 wheeler application. Maybe for engine braking when the throttle was released.
                            Anyway I reversed it on installation on the heli so only the clutch shoes would
                            drive the rotors and not this bearing upon start up. The problem now is when I
                            throttle down the engine which will slow down quickly, the rotors slowing down
                            want to drive the engine if that makes any sense. They should free wheel but
                            they tend to drive the engine and jerk the rotors and drive train a bit at shut
                            down as can be seen in the video. This bearing has to go and I'll have to make a
                            spacer bearing to replace this one. So as long as the clutch shoes are not
                            expanded, the rotors are totally free of the drive system to rotate.
                            Next....with only the lower rotors spinning, the gyro effect(rigidity in space)
                            make changing the angle of the rotor head via the handle requiring more effort
                            because of this effect. When I shut the engine down, the rotors should free
                            wheel to a stop. Maybe the gyro effect will change when all four rotors are on
                            and turning. They may cancel out each a bit. We'll see.
                            Nick
                            http://www.youtube.com/watch?v=PA-VpL0vAIo
                            Nick
                            Miller 252 Mig
                            Miller Cricket XL
                            Millermatic 150 Mig
                            Miller Syncrowave 200 Tig
                            2-O/A outfits
                            Jet Lathe and Mill
                            Jet 7x12 horz/vert band saw
                            DeWalt Multi Cutter metal saw
                            Century 50 Amp Plasma Cutter
                            20 ton electric/hydraulic vertical press
                            Propane Forge
                            60" X 60" router/plasma table

                            www.youtube.com/watch?v=jTu7wicVCmQ
                            Vist my site: www.nixstuff.com
                            and check out some of my ironwork and other stuff

                            Comment


                            • #89
                              When you add more rotational mass, it will increase the gyroscopic effect - doesn't matter that they're opposing each other.
                              Syncrowave 250DX
                              Invison 354MP
                              XR Control and 30A

                              Airco MED20 feeder
                              Thermal Dynamics Cutmaster 81
                              Smith O/A rig
                              And more machinery than you can shake a 7018 rod at

                              Comment


                              • #90
                                I realize the more weight and speed, the more gyro effect. I'm talking about a single rotating mass and the 90 degree effect when trying to move it from its plane of rotation. I wonder how the opposite 90 degree effect of the top rotor will effect this.
                                Nick
                                Miller 252 Mig
                                Miller Cricket XL
                                Millermatic 150 Mig
                                Miller Syncrowave 200 Tig
                                2-O/A outfits
                                Jet Lathe and Mill
                                Jet 7x12 horz/vert band saw
                                DeWalt Multi Cutter metal saw
                                Century 50 Amp Plasma Cutter
                                20 ton electric/hydraulic vertical press
                                Propane Forge
                                60" X 60" router/plasma table

                                www.youtube.com/watch?v=jTu7wicVCmQ
                                Vist my site: www.nixstuff.com
                                and check out some of my ironwork and other stuff

                                Comment

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