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  • 36" Ultimate Wheel

    I have a 24" Nimbus Ultimate Wheel, but wanted to have a 36" one. Modeled after the wrinkles of drag racing car tire, the spokes are laser cut from 6061 aluminum rectangular tubing. To overbuild, both hub (also laser cut 6061) and spokes have a wall thickness of 1/8". The rim is donated from a Coker wheel.

    I originally tried to hire a welder to weld them together for me but after two welders failed me I learned welding aluminum and did it myself.

    Two pairs of pedal threads have effective crank arm lengths of 150mm and 137mm respectively.
    Attached Files

  • #2
    Originally posted by sledgehammer View Post
    I have a 24" Nimbus Ultimate Wheel, but wanted to have a 36" one. Modeled after the wrinkles of drag racing car tire, the spokes are laser cut from 6061 aluminum rectangular tubing. To overbuild, both hub (also laser cut 6061) and spokes have a wall thickness of 1/8". The rim is donated from a Coker wheel.

    I originally tried to hire a welder to weld them together for me but after two welders failed me I learned welding aluminum and did it myself.

    Two pairs of pedal threads have effective crank arm lengths of 150mm and 137mm respectively.
    Awesome! Now I need a video of you riding it
    If you are female please join the Female Unicyclists! group on Facebook!

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    • #3
      Sledgehammer,
      Nice job on the UW. It is good that you have the spokes angles as a dragster wheel so you know what direction to ride it. Other wise you'd have to label or mark it in some way so the pedals would not be tuning backwards.

      What kind of welder did you use?

      Yes, we need photos/video of it in action.

      Jim

      Comment


      • #4
        Originally posted by JimT View Post
        What kind of welder did you use?
        I used a Lincoln Electric Square Wave TIG 200.

        Originally posted by JimT View Post
        Yes, we need photos/video of it in action.
        Jim
        Who said anything about riding?

        Comment


        • #5
          Just kidding.

          Here is a video of me riding the 24" nimbus UW. Will shoot me riding the new UW later


          [ame="http://www.youtube.com/watch?v=zS8DtJg3njk&feature=youtube_gdata_player"] 24"UW[/ame]

          Comment


          • #6
            learn so you can make your own

            Excellent ! In the late 90's I learned on a Parker TIG so I could weld my own design frames, but your ultimate is an inspiration to me. Could be my next thing, it's slow enough for me. Thanks for the video.
            WOW 3d cutting laser great!
            Last edited by lobbybopster; 2020-01-11, 03:16 PM. Reason: ad thought.

            Comment


            • #7
              Originally posted by lobbybopster View Post
              Excellent ! In the late 90's I learned on a Parker TIG so I could weld my own design frames, but your ultimate is an inspiration to me. Could be my next thing, it's slow enough for me. Thanks for the video.
              WOW 3d cutting laser great!
              Thanks lobbybopser! Actually your suspension unicycles are a real inspiration to me (and thanks for answering my questions). I am planning on copycatting you suspension uni and are currently collecting parts

              WRT the 3D laser cut parts, I initially tried to manually cut it myself but the lack of skill/tool made shoddy parts.

              Comment


              • #8
                I would totally buy this if you made another. Name your price hahaha.

                This is coincidental because I have a 36er rim I was just looking at that would be perfect for a plywood UW I want to make. I'm confident I could cut the plywood perfect but I have no clue how I'd get the pedals perfectly centered nor what would work for inserting the pedals into.
                Best of Me

                18:21 Stillstand
                255 foot railride

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                • #9
                  Nice job!
                  Here is mine:



                  I enjoy it tremendously, much more fun than the 24"

                  Comment


                  • #10
                    frames

                    [QUOTE=sledgehammer;1710661]Thanks lobbybopser! Actually your suspension unicycles are a real inspiration to me (and thanks for answering my questions). I am planning on copycatting you suspension uni and are currently collecting parts

                    Use a GT LTS 2 frame of the earlier (90's) design. There is a thread explaining its design under suspension unicycle.

                    Comment


                    • #11
                      Got it. Thanks.

                      Originally posted by lobbybopster View Post
                      Use a GT LTS 2 frame of the earlier (90's) design. There is a thread explaining its design under suspension unicycle.

                      Comment


                      • #12
                        UW parts for sale

                        I ordered enough parts for two UWs and now the leftovers are up for sale:

                        1. 11 spokes (3D laser cut from 1"x2" 6061 aluminum tubing, 1/8" wall)
                        2. 2 piece hub ( laser cut from 1/8" thick 6061 aluminum plate)

                        $330 OBO.

                        Additional parts needed to build a 36" UW:
                        1. a 36" rim (the parts fit Coker aluminum rim perfectly)
                        2. 1" OD aluminum tubing cut to ~1-1/4" long (need 4) to fit in the holes of the hub pieces for pedal thread
                        Attached Files

                        Comment


                        • #13
                          Originally posted by DSchmitt View Post
                          This is coincidental because I have a 36er rim I was just looking at that would be perfect for a plywood UW I want to make.
                          I'm going to caution you about a 36" plywood uni. It will be very heavy! You have to use material thick enough to support your pedals (you can use a Unicycle Factory Ultimate wheel insert kit (steel), but I think that's intended for 3/4" plywood. I have a 24" Ultimate with 3/4" plywood and the Ultimate wheel insert. It's fairly heavy, even with two Uni-Cyclone-shaped holes cut out of it.

                          A 36" built the same way will look cool, and keep on rolling after you fall off, but so heavy it may break pedals when it eventually does fall over. If you cut away a bunch of the plywood that should help, but it will still be fairly heavy.

                          If you hand-build, I recommend allowing for multiple "virtual" crank lengths. Don't lock yourself into just one, it might not be what works best for riding.
                          John Foss
                          www.unicycling.com

                          "Who is going to argue with a mom who can ride a unicycle?" -- Forums member "HiMo"

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