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  • #16
    i have always been interested in ultralights and gyros just havent been in the financial situation to be able to get one or try pilot training. would like to though before i kick the bucket
    hh 187.:
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    • #17
      Originally posted by down19992000 View Post
      i have always been interested in ultralights and gyros just havent been in the financial situation to be able to get one or try pilot training. would like to though before i kick the bucket
      Just about anything related with flying is expensive. The prices I've seen for
      some gyros that are small and simple still bring a big price. Same with ultralites. Of course the motors and props are a big part of the bill. Gyro
      rotors are expensive. Rotors like that I wouldn't attempt to build. Smaller rotors and props can be home built.
      This unit I want to build shouldn't be too expensive. The engine will be the
      biggest expense.
      I need a two stroke 30-35 hp range........strong but lightweight. ANYONE
      HAVE AN IDEA WHERE TO FIND AN ENGINE LIKE THIS? Also what size engine in CC equates to this hp . I'm thinking maybe off a dirt bike or the like. I hate to pay for an entire bike just for the engine. Any leads welcome.
      Nick
      Last edited by monte55; 08-05-2008, 06:27 AM. Reason: added text
      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

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      • #18
        maybe a snowmobile motor about 500cc??? just a guess but it might work
        hh 187.:
        powcon 300 st
        cheap chinese plasma cutter
        miller diversion :

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        • #19
          Wouldn't you need a vertical shaft engine???

          www.facebook.com/outbackaluminumwelding
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          • #20
            Yes and No.
            Vertical shaft will be easier.........a 2 stroke can be turned on its side. A 4 stroke would need a right angle drive but will weigh more for its power in most cases. Either way, the rotors have to be driven indirectly through chain or gear reduction. I'm designing my counter rotating gear box now using 4 spider gears from a Dodge 3/4 ton van rear end. As I progress, I'll post pics if
            there's an interest here.
            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

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            • #21
              Snowmobiles. jet skiis, and dirt bikes. Maybe a used Kart engine? Industrial snow blower? I would try craigslist and e-bay, maybe a jetski or snowmobile board similar to this.

              http://minneapolis.craigslist.org/rvs/790439780.html
              Dynasty 200 DX
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              • #22
                Absolutely interested in pictures of this project !!!

                I was checking out my cousin's kids dirt bikes. They tell me all the new dirt bikes are 4 cycle dew to emissions but they seem to be really light weight now days.
                To all who contribute to this board.
                My sincere thanks , Pete.

                Pureox OA
                Westinghouse 300 amp AC stick
                Miller Syncrowave 250
                Hexacon 250 watt solder iron

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                • #23
                  Update on one man helicopter progress...

                  I have been figuring and machining a lot lately. The project I am working on...I have no plans..or specs. All I have to go on is some external views (pics). No drawing what so ever. I had to figure out how to make the inside pieces, such as bearing housings, bearing retainers, spacers, bronze bearings etc. Hope it works

                  The following pictures show the progress of the counter rotating rotor head unit. Remember, this has one rotor above the other, rotating in opposite directions so as not to have rotor torque problems, which would require a tail rotor. I'm sure the mechanically inclined will be able to decipher these pics and the reasons for certain parts. The tapered bearings are the inside bearings on a front axle for an 87 Dodge 3/4 ton Van. The spider gears are out of the same year van. I needed a place to start and I had these spider gears and since I wanted a 1 inch rotor shaft.........after inquiring about the tapered bearings for the same vehichle, it looked like it would work and it did. I also asked you guys your thoughts on a good two stroke engine for this project and got a few suggestions. Sitting in my drive is a 1977 440 CC modified Kawasaki jetski which may be ideal for what I want. Here are the first set of pics.
                  Attached Files
                  Last edited by monte55; 08-31-2008, 06:19 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

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                  • #24
                    Update on one man helicopter progress...Part 2

                    More pics:

                    Thanks for looking,
                    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


                    • #25
                      If I'm seeing this correctly, I see one potential problem.
                      The spider gear is normally a relatively motionless gear, now it will be spinning at a high rate of speed on bushings rather than bearings.
                      To all who contribute to this board.
                      My sincere thanks , Pete.

                      Pureox OA
                      Westinghouse 300 amp AC stick
                      Miller Syncrowave 250
                      Hexacon 250 watt solder iron

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                      • #26
                        The two small bevel gears rode on a steel shaft.....no bearings, when they were in the rear end. The bushings you see are made from oil impregnated bronze. I bought a 6.5" long x 1" diameter at a cost of about $19.00. Expensive! Anyway they should work and are easily made and replaceable.
                        I've never machined this stuff before. It oozes oil as you cut it.
                        We'll see later how it all works.
                        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


                        • #27
                          Its kind of hard to tell what represents what in the pics so far, but it would seem to me that the gear box needs to be under both propellers with a bevel gear on the bottom connected to the inner rotor shaft turning the top propeller and the bevel gear on the top connected to the lower propeller. The spider gears would have to be mounted to the gear box itself to insure the props spin at the same speed but in opposite directions.
                          Does this come close to describing your plan?
                          To all who contribute to this board.
                          My sincere thanks , Pete.

                          Pureox OA
                          Westinghouse 300 amp AC stick
                          Miller Syncrowave 250
                          Hexacon 250 watt solder iron

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                          • #28
                            It kind of looks like you have the gear box between the propellers. With out a way of controlling the position of the spider gears, I don't see how you can control the speed of the props in relation to each other. In other words, if the gear box is floating between the props every thing could turn in the same direction regardless of the spider gears.
                            To all who contribute to this board.
                            My sincere thanks , Pete.

                            Pureox OA
                            Westinghouse 300 amp AC stick
                            Miller Syncrowave 250
                            Hexacon 250 watt solder iron

                            Comment


                            • #29
                              Originally posted by burninbriar View Post
                              It kind of looks like you have the gear box between the propellers. With out a way of controlling the position of the spider gears, I don't see how you can control the speed of the props in relation to each other. In other words, if the gear box is floating between the props every thing could turn in the same direction regardless of the spider gears.
                              I have a good mechanical mind but this also had me stumped for about an hour of looking at the pics I had.
                              First.........the 1" rotor shaft is stationary and does not rotate. The bottom 6" diameter x 5/8" thick round plate which a sprocket will be attached to, to be driven by the engine, the 1/4" x 4" flat aluminum piece, the 3" diameter x 2" tall round aluminum piece with bearings inside, another 1/4" x 4" flat aluminum piece, a 3" round diameter x 1" piece which the lower bevel gear is pinned to all move as one unit. The two smaller bevel gears above are stationary in a level plane but will spin and a 3/8" bolt will hold them on the non rotating shaft. Idler gears if you will.
                              Second......The top larger bevel gear and all the duplicate pieces for the top rotor blade mount will also move as a single unit around the stationary shaft.
                              It's very simple but difficult to imagine when we think a rotor shaft must turn.
                              Does this help? Like I said, I had a problem with this at first.
                              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


                              • #30
                                Makes perfect sense now. I don't think the sprocket is pictured, or at least I don't remember it. Basically you have the inner shaft serving the purpose for the spider gears as I was thinking the gear case housing would do if the inner shaft spun. I didn't realize the inner shaft was to be stationary.
                                Will the spiders be able to ride in oil when its done, or will they remain exposed?
                                To all who contribute to this board.
                                My sincere thanks , Pete.

                                Pureox OA
                                Westinghouse 300 amp AC stick
                                Miller Syncrowave 250
                                Hexacon 250 watt solder iron

                                Comment

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