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    Wheels What's The Difference

    how much difference is there between 25 inch wheels and 26 inch wheels? What does everyone prefer and why?

    #2
    You can look at wheels like gears on a bicycle. if you spend most of your time wheeling on short trips where you have to go up and down ramps/hills I would pick 24 inch rims. If you do longer, mostly flat trips I would pick 25inch tires. Unless you are really tall I wouldn't see the need for 26 inch tires.

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      #3
      A common use of 26s is on basketball chairs, where users want to get somewhere quickly.

      I switched from 24 to 25 a few years ago; I like 25s, but can't really explain why. They just feel right to me.
      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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        #4
        I also switched from 24" to 25" wheels a few years ago and will not go back. I get so much more out of each push and you get a better ride also. Going to a larger wheel can make transfers a little more difficult.
        C5-6 Complete - 8/13/1982

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          #5
          You would only get a "gearing" difference if your wheel to handrim diameter ratio increases. If you increase handrim diameter along with increasing wheel size, you're not getting any more out of the push.

          No arguing that a bigger wheel decreases rolling resistance though.

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            #6
            Originally posted by Tsquared View Post
            You would only get a "gearing" difference if your wheel to handrim diameter ratio increases. If you increase handrim diameter along with increasing wheel size, you're not getting any more out of the push.

            No arguing that a bigger wheel decreases rolling resistance though.
            How does a bigger wheel decrease rolling resistance? With a larger diameter don't you also get a larger contact patch, which would increase resistance?
            "I have great faith in fools; self-confidence my friends call it." - Edgar Allen Poe

            "If you only know your side of an issue, you know nothing." -John Stuart Mill, On Liberty

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              #7
              I get more out of each push as I have more to grab, being they are within reach better, also with the larger diameter there is more to push.
              C5-6 Complete - 8/13/1982

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                #8
                Sorry I took that a bit too literally in that you were getting more in distance out of the same arm stroke. But really you meant that the larger diameter takes better advantage of your potential arm stroke and you can do bigger pushes. My bad. So ideal tire size can depend on a person's size and ability it seems.

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                  #9
                  Originally posted by Tsquared View Post
                  So ideal tire size can depend on a person's size and ability it seems.
                  I believe that to be true. If you are on the shorter side, 25" wheels may be to much.
                  C5-6 Complete - 8/13/1982

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                    #10
                    I sue 26" wheel. Whenever I have used 24" it feels like I am having to do so many more pushes to get anywhere and I would not want to use anything smaller than 26".
                    Bigger wheels make bouncing up kerbs easier to.

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                      #11
                      Yeah the physics is a wash, rolling resistance vs extra weight etc..
                      I roll on 26" and 25"

                      26" increases your footprint by the amount of over hang out the back of your chair, somaneuvering in tight spots becomes an issue. Bigger wheel are a hassle getting in and out of the car.
                      25" wheels have a massive selection of tires. pretty much my reason for moving to 25" wheels

                      I would say it all depends how tall and how long your arms are. Test them out and see which feels better, and hopefully you have a PT and can point out which size will cause your shoulders the least issues.

                      If I'm just rolling around town the 26" wheels feel way more efficient for me, but then I think they just fit my body size better. The 24" rims drive me up the wall

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                        #12
                        Originally posted by elizabeth422 View Post
                        how much difference is there between 25 inch wheels and 26 inch wheels? What does everyone prefer and why?
                        An increase of one inch is not so much, but my chair that has 26's seems like I'm sitting down between the wheels and it is more difficult to transfer to/from because of them seeming so tall. The other chairs I use having 24's and 25 setup with the same FSH and RSH do not give this impression.
                        I have had periodic paralysis all my life. I lost my ability to walk in 2011 beginning with a spinal block, which was used for a hip fracture caused by periodic paralysis.

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                          #13
                          One of the main reasons I switched to 25" rims is tire selection. Most mountain bike and city bike tires fit 25" rims.

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                            #14
                            Other things to consider are:
                            Your seat heights
                            Camber
                            Center of gravity
                            Cushion height(s)

                            These all affect your hand position. Easier to do this when having a chair built as all factors are taken into consideration.

                            There is more to it than just more out of each push.

                            My latest chairs:
                            25s on a 16" RST, 4 degrees of camber, and 6" COG
                            25s on a 16.5" RST, 4 degrees of camber, and 6" COG
                            24s on a 16.5" RST (Ergo seat), 2 degrees of camber, and 6" COG

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                              #15
                              Originally posted by t8burst View Post
                              You can look at wheels like gears on a bicycle. if you spend most of your time wheeling on short trips where you have to go up and down ramps/hills I would pick 24 inch rims. If you do longer, mostly flat trips I would pick 25inch tires. Unless you are really tall I wouldn't see the need for 26 inch tires.
                              To further clarify, think of a tall person and a short person walking the same distance. The tall person will have less strides to cover the same distance as a short person. For wheels, one push on a 26" wheel will get you slightly further than the same push on a 24" wheel. I use a 25" wheel as a compromise between the other two sizes. The 25s fits better in my lifestyle for my usual transfers and fitting in my car. They allow me to grab things off the floor without stretching too much and I still have pretty good high reach for stuff on grocery store shelves. You need to try all three sizes to see which works best for you. (I'm a stocky 5'6" with relatively short arms.)

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