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  • #31
    Originally posted by JeffAdams View Post
    A lot - same surface as Q grip.

    The non-coated ones are exactly as slippery/non-sticky as regular round push rims, but the added purchase from more contact area makes them feel (and perform) a lot grippier. The biggest difference I found was when I really squeezed the push rims - the round ones just aren't the right shape, so my middle finger kind of hooks under, and my distal knuckle sees a lot of stress (I've got a bit of bursitis in it from strain).

    The Carbo-Life ones let me squeeze, and grab more surface area, and are a shape that is much more natural for my hand/fingers to form to.
    Jeff, I've been using Natural Fits for 4 years or so, and have been happy with them, but the cross section of the Curve L looks to be much more ergonomic. Would you say that they are significantly better than the Natural Fits? Thanks...
    Don - Grad Student Emeritus
    T3 ASIA A 26 years post injury

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    • #32
      The shape of the CarboLife ones gives almost 100% purchase in terms of contact area, and I can grip/squeeze as hard as I need to without it putting any weird stresses on my joints - I have pretty badly damaged hands from smashing my fists into the pushrings of my racing chairs for 20 years, and any side-load on my knuckles causes a lot of pain - the CarboLife rims have all but eliminated it.

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      • #33
        Here is an update on the longevity of my Q-grips. My last pair of them had almost a 4 year life. Toward the end of 4 years, I started getting slits in the side of the pushrims. At C7, I don't have hand grip strength so when I push, I push on the top of the rim. When I brake going downhill, I drag my hands on the side of the rim. So the top of the rim gets a lot of use but very little sliding between the rim and my hand. The side of the rim gets a lot of sliding and since my street has some nice hills on it, the rim gets pretty hot sometimes when I'm going downhill. For reference, I use leather palm ADI gloves. The Q-grips are failing where I drag my hands going downhill. These are not cuts from anything external and sharp, but appear to be just some sort of internal fatigue failure. It may be that the bond between the coating and the metal rim fails first and then the coating fails in shear. Whatever the failure mode is, it's very uniform. In a few months I went from having a few small slits to more than 15 on the two rims with some of the slits 3 or 4 inches long. Yesterday, I glued them shut using 3M weather strip adhesive, but I don't expect that to last. I still think Q-grips are the best option for me. I have new Q-grips on order and will install them when I figure out what I want to do about my Marathon Plus tires (separate thread).

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        • #34
          New Q-grips installed today. I had forgotten how soft and grippy they are when new. Quite different than when 4 years old, though both are functional.

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          • #35
            Here is another update to my experience using Q-grips. The Q-grip push rims that I installed about 10 months ago are failing in the same mode described in my 5-19-2019 post. This is dramatically worse life than I had observed in the previous set of Q-grips. I don't have any explanation for this. Same chair, rolling around the same hilly neighborhood, and about the same amount of rolling elsewhere. I glued 6 splits yesterday in my left push rim alone. I can't think of any explanation for the difference in life except that the more recent Q-grips are simply of lesser quality than what I bought 5 years ago.
            For now, I'm giving up on Q-grips and will order Carbo Life Curve L tetra grip, recommended for users with limited hand function but with triceps. A friend (without triceps) is using their Quadro version and likes them so far.
            Last edited by endo_aftermath; 03-06-2020, 08:11 PM.

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            • #36
              Originally posted by endo_aftermath View Post
              Here is another update to my experience using Q-grips. The Q-grip push rims that I installed about 10 months ago are failing in the same mode described in my 5-19-2019 post. This is dramatically worse life than I had observed in the previous set of Q-grips. I don't have any explanation for this. Same chair, rolling around the same hilly neighborhood, and about the same amount of rolling elsewhere. I glued 6 splits yesterday in my left push rim alone. I can't think of any explanation for the difference in life except that the more recent Q-grips are simply of lesser quality than what I bought 5 years ago.
              For now, I'm giving up on Q-grips and will order Carbo Life Curve L tetra grip, recommended for users with limited hand function but with triceps. A friend (without triceps) is using their Quadro version and likes them so far.
              I had the initial set of Q-Grips for a number of years and they lasted a good 3-4 years before they started splitting.

              Since last september i've had the Carbo life Curve Tetra grip. The shape is a lot better than the q-grip, however for some strange unknown reason it looks like someones taken a 1000 slashes down both sides and I ain't got a clue how they've got there. I've not really hit anything noticeable yet they've started marking a lot quicker than the Q-grips.

              I would say these have zero chance of lasting 2+ years before serious chunks start coming away. Also the rubber coating is a lot thinner.

              Update

              Just read you post previous to this one.
              you mention about the slits showing on the q-grips, that you put down the ware. do these basically look like slightly angled slashes? if so thats exactly what i'm getting on the carbo life.

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              • #37
                Agentwalker, thanks for the heads up your Carbo Life Curve experience. I haven't ordered them yet. The splits in my current Q-grips match the first batch--circumferential splits, from 2 centimeters to maybe 10 centimeters long. It is as if someone was spinning the wheel and intermittently holding a sharp knife against the outside edge. It's not at the top of push rim, but more so at the farthest point from the center line of the chair. From your description I'd say they don't match what you're seeing with the Carbo Life. It is exactly the same failure mode that I had with the previous Q-grips, just at about 20% of the life. I'm really disappointed as I've been bragging about how great these Q-grips are for several years now. I would love to hear from Out-Front something like "it looks we had a bad batch but it's fixed now" because I really like what they used to be and would like to keep using them.

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