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Aluminum Tig ? for the pros or whoever

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  • #16
    can you incorporate some form of a scraper to direct fluid back to the center or to the gear teeth (wherever you want it)? how about a helical ramp around the id that will lift the oil and dump it back to the center/top so it falls on the gears?
    Dynasty 200 DX
    Millermatic 175
    Spectrum 375
    All kinds of Smith OA gear

    Comment


    • #17
      think archimedes screw.
      Dynasty 200 DX
      Millermatic 175
      Spectrum 375
      All kinds of Smith OA gear

      Comment


      • #18
        I'd like to see what all this housing/gearbox is intended to do. Got a print Nick? Drawing? Lines in the sand?
        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


        • #19
          Gear Housing pictures

          Ok...............here's the housing I came up with. It's a 6" diameter and you can see the gears inside. I found a brass base that I cut and fit to the ID of the can. The outer width of the the brass round should keep the oil in place. The
          ID of the brass is sloped down to allow drainage back down. Just above the brass ring is the thin aluminum slinger. This should sling any fluid that may come out the middle to the can walls again. When I come up with direction
          of rotation of the rotor(depending on engine and drive) I may cut the brass
          to include downward deflectors or add them. The holes on the side will have plugs. They are necessary to remove the bolt from the side gears when the can is in place.
          Attached Files
          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


          • #20
            Gear Housing Pic. part 2

            Here are two more pics. Notice the room above the thin aluminum slinger. I can also insert a foam seal just in case..to keep things cleaner.

            Nick
            Attached Files
            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


            • #21
              Please tell me the double nut is for mock-up only...

              You need positive retention hardware for this stuff Nick. That means self retaining bolts, castellated nuts with cotter pins, and safety wire. Otherwise I would make sure your life insurance is paid up so the wife and kids have something after you're gone.

              Helo's do one thing better than vertical take offs - they vibrate like you would not believe. Loctite ain't gonna cut it on this one.
              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


              • #22
                I agree with FJ ( again!) i assumed your just mocking stuff up. If memory serves the book you want to reference (if you don't already know) is the AC 43.13 available for download from the EAA


                http://www.experimental.ch/component...,15/Itemid,41/
                Dynasty 200 DX
                Millermatic 175
                Spectrum 375
                All kinds of Smith OA gear

                Comment


                • #23
                  Originally posted by Fishy Jim View Post
                  Please tell me the double nut is for mock-up only...

                  You need positive retention hardware for this stuff Nick. That means self retaining bolts, castellated nuts with cotter pins, and safety wire. Otherwise I would make sure your life insurance is paid up so the wife and kids have something after you're gone.

                  Helo's do one thing better than vertical take offs - they vibrate like you would not believe. Loctite ain't gonna cut it on this one.
                  Well Duh!.............yes, this is semi assembly as it will be taken apart and
                  reassembled many times before final assembly.
                  Nick

                  PS.........if the heli vibrates, there will be other problems as well. Everything has to be balanced.
                  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


                  • #24
                    Nick, ALL helicopters vibrate! It's the nature of the beast. The rotor head has so much going on in it, that it wiggles from simple inertia of the parts changing direction (the blades must change pitch independently or you wouldn't be able to steer).

                    If I was on a chopper that stopped vibrating, I would bend over and kiss my azz goodbye - cause that would be very, VERY bad.

                    A fixed wing aircraft is just losing that new plane stink at 3000hrs, while a helo is about ready for the bone yard.
                    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


                    • #25
                      This unit has no collective. Rotors are fixed pitch and can't be changed during flight. Altitude is achieved by rpm. Direction is through weight shift or rotor tilt.
                      They will flex some though.
                      Last edited by monte55; 09-16-2008, 03:41 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


                      • #26
                        A fully articulating rotor system it is not. There will be no leading, lagging or aerodynamic feathering here. I worked on helo's for eight years, and have over 2500 hours in Blackhawks and you definitely need safeties on that hardware for sure; ESPECIALLY on anything that rotates. You might want to just put a seal on the top of that oil reservoir and then put enough volume in it so the spider gears will contact it when it is at full RPM. You can figure the fluid volume simply by measuring the diameter and height of the tank, measure the distance of the spider gears from the inside diameter of the tank and subtracting the two (remember to add to that distance how much of the spider gear you want to be in contact with the oil. You will need a seal for sure though as those gears will be slinging that oil everywhere regardless. Itís an interesting idea, but having seen firsthand the results of several helo crashes youíll definitely want that insurance policy paid up.
                        DYNASTY 200SD
                        COOLMATE 1
                        MM140AS
                        SPOOLMATE 100
                        SPECTRUM 625 X-TREME
                        SPECTRUM 125C

                        Comment


                        • #27
                          I'm thinking about installing a rubber seal on top of the brass ring that hugs the non rotating shaft so I can have more lube to keep in contact with the gears. The original version of this unit flew quite a bit with totally exposed gears but since has enclosed them. All hardware will be safety wired upon final assembly. This is a heli that will mainly hover in ground effect but will go much higher. There is a direct relationship between ba!!s and height flown.
                          The man who flew his flew his about 20-25 feet agl judging by the videos.
                          No safety there Have you seen his videos? Pretty cool. Back in the 70s
                          I was going to build the Choppy but realized I didn't have the tools, knowledge etc. But, I did read a lot on fully articulating rotor heads and thought "what genius" and what effects and problems. I learned a lot from a Scorpion I bought, rebuilt some but never flew. Sold it and got a Cessna 150
                          and got my licence. I love this stuff!!!!!!!!! Did you pilot or ride for 2500 hours? Are you an A&P on helis...................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


                          • #28
                            those hours were spent in the back manning the 60 or the 134 and conducting slingload ops. I managed a bit of stick time (off the books of course) and I went back to school to become an engineer afterward so I never bothered to test for my A & P though the thought occasionally still crosses my mind. I miss the flying for sure, and the guys (Army aviation is chock full of wonderfully whacko folks), but the Army... Not so much


                            Mark

                            Keep posting up the pics. I'm curious to see how this turns out.
                            DYNASTY 200SD
                            COOLMATE 1
                            MM140AS
                            SPOOLMATE 100
                            SPECTRUM 625 X-TREME
                            SPECTRUM 125C

                            Comment


                            • #29
                              Oh come on, you miss charlie company 1/222.
                              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


                              • #30
                                I've made a few air tanks to hold nitrogen/co2 for the air shifters on both drag bikes and a few rail cars. I just ground the outter edge of teh disk in about 1/2 way at a ~608 angle and then took a porting tool and made a slight taper in the inside edge of the tubing as well. So far they have held 140psi with no issues, i think it will contain your oil easily, just double echeck for pin holes before putting it into service.
                                Dynasty 200DX
                                Hobart Handler 135
                                Smith MB55A-510 O/A setup
                                Lathe/Mill/Bandsaw
                                Hypertherm Powermax 45
                                Just about every other hand tool you can imagine

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