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Rio Mobility Dragonfly review

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    #16
    Originally posted by ckhouri View Post
    Thanks for the info. Sure it should be in a different topic... But I would not get your expert opinion there would i?

    Cheers.
    Of course you would!
    Gordon, father of son who became t6 paraplegic at the age of 4 in 2007 as a result of surgery to remove a spinal tumour.

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      #17
      Originally posted by Gordy1 View Post
      . . . It doesn't work on grass (wheels spin, it's tough to get moving, and to keep momentum once you are going), and my son gets up hills faster without the Dragonfly than with it. . .
      The poor Dragonfly traction with standard axle position is why I ordered a second axle (mounted on amputee adapters) on my new TR. Traction is now superb on very steep paved hills and slightly sloping grass (even with the 12" wheel)!! I can start moving uphill on either of them from a dead stop (although starting uphilll can take a lot of shoulder strength).

      Originally posted by Gordy1 View Post
      . . . it seems that the diameter of the handlebar downtube (ie the tubular that fits inside the arm connections) is slightly smaller diameter than it could/should be. This makes the cranks on the Dragonfly (and the handlebar on the Firefly, to a lesser extent) somewhat "wobbly", despite the fact that all the connections/bearings are solidly tightened. It's maybe a minor point, but having discovered the issue, it seems a bit daft that RioMobility didn't use a standard diameter bike downtube within the arm connections (that's the reason I spotted the diameter difference - I'm putting a standard bike handlebar/fork assembly within the old Firefly components, and the fit is far better. . .
      Great to know - I'll definitely keep in mind for future mods. Thanks


      Originally posted by djrolling View Post
      . . . Yes you are right the review is for the Dragonfly but I think the general principles translate across all attachments hopefully chas wont mind. I guess the info might be easier to find if it were in a general discussion on attachments
      I don't mind a bit
      Chas
      TiLite TR3
      Dual-Axle TR3 with RioMobility DragonFly
      I am a person with mild/moderate hexaparesis (impaired movement in 4 limbs, head, & torso) caused by RRMS w/TM C7&T7 incomplete.

      "I know you think you understand what you thought I said, but what I don't think you realize is that what you heard is not what I meant."
      <
      UNKNOWN AUTHOR>

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        #18
        My latest mod: Bike-on Ergo Handcycle Grips - love them

        Previous super-important mod: Shimano SL-S500: grip-mounted trigger shifter (on stock grip).
        Last edited by chasmengr; 7 Aug 2016, 4:00 PM.
        Chas
        TiLite TR3
        Dual-Axle TR3 with RioMobility DragonFly
        I am a person with mild/moderate hexaparesis (impaired movement in 4 limbs, head, & torso) caused by RRMS w/TM C7&T7 incomplete.

        "I know you think you understand what you thought I said, but what I don't think you realize is that what you heard is not what I meant."
        <
        UNKNOWN AUTHOR>

        Comment


          #19
          After more days than I was expecting, here are picts of my (lightly) modified DFly. You can see the seat tube collar above the threaded sleeve to avoid slipping. Quick note: we preferred to remove all the headset in order to give a look inside... and it was absolutely free of any grease... It is now well lubricated and adjustable !
          On the second one you can see my chin speedshifter. I've used an aftermarket Shimano-compatible push-push lever found on eBay (15$). The collar in a car exhaust pipe collar, from eBay too (2$) The tube is an old handlebar if I remember well. We have re-shaped the levers with epoxy putty to make them fit my chin

          Attached Files
          C6-7 since mid 2002, no hand control nor triceps.
          my website & my job (in France): Accessibility advisor www.acceslibre.eu
          Also working on a French research about Peer counseling and Empowerment.

          Comment


            #20
            some answers for ckhouri, IMHO :
            a) make your combined wheelchair +triride as short as possible. This is one of the best solution to put more weight on the front wheel, and then, more grip. The "chas/djrollin' solution" (adding another axle sleeve as back as possible) is better if you can do it on your chair, and if you can change your wheel position before your ride. The third solution, inexpensive : lean your torso forward as much as you can ! I've made a trial: when you lean to the front your chest approx. 1", you add approx 15 lbs on the front wheel of your attachement ! It can make such a difference... and it is easier than putting some lead in your trouser's side pockets ! To achieve that, you can adjust your chair with the back as vertical as possible when attached (that means you will have to change that once detached) or ... set the attachment with your casters as low as you can and still ride safe (what I have done)
            b) not sure. If your wheel is larger, your wheelbase has to be larger too, if you want to turn without putting your tiptoes in the wheel. So, as referred above, less grip. Having a big frontwheel is better if you can use the "Chas/dj solution"
            c) wide, because you can run wide tires at lower pressure (this is true with all the sizes of wheels), and lower pressure gives you more grip. And on a wide tire, it doesn't add -too much- drag. I had to come back home after a flat on my DFly, ... I've never had more grip ! I've never been so tired (and so slow) too ...
            d) you can use diver's lead weight, as batec does. But IMO it adds some "non-productive" weight to your attachment, you'd better try new settings before.
            C6-7 since mid 2002, no hand control nor triceps.
            my website & my job (in France): Accessibility advisor www.acceslibre.eu
            Also working on a French research about Peer counseling and Empowerment.

            Comment

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