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In need of advice and help (Wheelchair)

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  • #16
    The depth is 20 or 21 inches. I can adjust the dump also and I have been but so far no matter what I keep having the same problem no matter the adjustments. Too low and my knees are too high and too high I slide a little more. But even in the middle where I have it now the sliding keeps happening.

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    • #17
      If the back of your knees are touching the seat at all, it's too long and will cause you to scoot forward. I'm 6'2" T6/7 using a Tilite TR with Ride Java back and cushion. My seat depth is 18". I have a 4" depth ridigizer bar. The clearance should leave around a two finger width between back of leg and seat.

      A T/10 should handle a 1 to 3" dump with back at 90o. 2" is the average I believe. I have a 4" dump with my back at 14" and at 90 or 92o angle. If your back angle is too far forward, you'll naturally scoot forward to accommodate how you're used to sitting. For a rough fitting of leg length to foot rest you should be able to place you fingers under your knee with a slight pressure to the fingers.

      For cog roughly measured with you sitting straight, your index finger should be in middle of axle button with fingertips between half the button to just below it. You should be able to do a wheelie fairly easy for a T/10. A 1/4 or 1/2" can make a big difference once the cog is roughly dialed in.

      Are you changing the front wheel angle to 90o when trying out the different dump positions. That's critical. 11" back is pretty low considering the cushion. If you can raise it up a bit, that may take pressure off your lower back. With that low of a back, your lower back is doing all the work in stabilizing your body. Try raising abit and perhaps a one hole recline that you have now.

      Anytime you make an adjustment to the chair cog or dump, the front forks have to be adjusted to be at 90o. A square or level helps a lot. Also when dialing in, check the toe in-out of the rear wheels.
      Last edited by Patrick Madsen; 04-04-2019, 02:58 AM.

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      • #18
        The depth is at 20". I just measured it. I believe that is what my first chair was at. That chair was an old Quickie R2. With that chair the back of my knees did touch the seat. But I never had this problem with that chair that I have been having with this chair and the chair before this one.

        This sliding and posture issue started with my previous chair (which is shallower at 17"). That chair is a TiLite ZR. Besides the Jay Back and being able to slide to front wheels forward just a 1/4", there is no adjustability for that chair. It is also shorter from top to bottom by at least an inch. My back wheels are an inch larger at 25" on the Areo Z compared to 24" on the ZR.

        But yeah whole issue started with the ZR. Literally from one day to the next. I had decided to try and go up a local mountain paved trail one night and I did it with ease. Either the next few days or weeks after that I couldn't even do the small hill down the street. Because the harder I push the more I slide and that made it harder. It would be like me sitting in low bucket quad rugby chair and trying to go up the hill. I posted a picture of myself in the first page of how I was sitting in the ZR.

        With the Aero Z when lift myself and scoot back my legs with push the cushion back but even after that the back of my knees are still not touching the sling either.

        Other than sliding the back wheels forward, the dump and the adjustments for the back I haven't messed with any other adjustments. I didn't think about the casters. Also I don't know at what degrees I am setting the adjustments at. I am just going by feel mostly. Which apparently isn't helping me at all.

        You would think that being a T10 paraplegic for 16+ years that I could and would have mastered the wheelie by now but it is actually the complete opposite. I can not and have not ever been able to do a wheelie other than the little hops just to get over small bump. I am trying to change that. But right now it's not gonna happen until I solve this issue I am having.

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        • #19
          Picture of you in the chair from the side, will help.
          First you need to lower the back of the seat, probably a lot. Don't worry about how far forward/rearward the wheels are until you get the rear of the chair low enough to keep you from sliding forward.
          Then you can work on the next step.

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          • #20
            I'd like to help out if I can, but it will be difficult to tell what's going on without a good straight on pic of you in it from the side and a couple of pics of just the chair.

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            • #21
              Originally posted by baldfatdad View Post
              First you need to lower the back of the seat, probably a lot. Don't worry about how far forward/rearward the wheels are until you get the rear of the chair low enough to keep you from sliding forward.
              Then you can work on the next step.
              Right now I have the back as low as it will go and I did raise the seat up one more notch. And I did move the back forward a little bit. I will have to move it back again. As far as the sliding forward goes so far it has not mattered where I set the seat at. I had it on all natches and also adjusting the back I am still sliding forward. Where I have it set now is where I would prefer to be. I prefer to sit up higher. Thinking back to my first chair (Quickie R2) this about the height where I was. I can't go back to that chair now. A few years ago I split the frame on the bottom two tubes. Had it welded and split it split them again. Threw it away a few months ago and didn't think about taking any measurements or getting the part number off of it. I don't have any old paperwork on it either.

              Since I had broke that chair I have had 2 other chairs and so far I have not been sitting comfortably in them. And another chair (which would have been my second chair) that was a folding chair and that was a very bad idea to get. Never used it. Just used it for parts.

              Anyway. Basically I am at a loss. I am making adjustments but nowhere can I find the comfort. I understand there is a lot of trial and error but for me it seems like there is a lot more.

              Originally posted by SCI_OTR View Post
              I'd like to help out if I can, but it will be difficult to tell what's going on without a good straight on pic of you in it from the side and a couple of pics of just the chair.
              I will try to take pictures tomorrow. I posted a picture in the first page of me in my previous chair. From that chair to this one I am having the same posture issues (so there is not much difference) even though the depth on this chair is 3 inches longer and adjustable. The previous chair I could adjust the back but that was it really.

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              • #22
                Most causes of sliding forward have already been mentioned. One thing to add is that your spine may be "C" shaped where it should be "S" shaped. Only a rigid back can position your spine away from "C" and toward "S". An upholstery back can't do that. Having said that, an upholstery back is probably better than the the wrong rigid back. I live close by. PM me if you want to discuss and meet.

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                • #23
                  Thanks August. PM sent.

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                  • #24
                    This is a little late for me to ask this question right now.

                    A couple weeks ago I talked to August. We talked about a number of things about me and my chair.

                    I really just have a quick question. Don't want to make this long.

                    I am still having sliding and discomfort issues despite the adjustments and changing over to the sling back from the Jay Back. They are not as bad and better to deal with.

                    Today is Monday and tomorrow I have a doctor appointment. I am thinking of asking my doctor for another prescription to get another chair.

                    Based on these pictures and your opinion should I go through this process again of getting another NEW chair or should I work on losing the weight first?

                    On all my chairs my width has always been 18 or 20 inches. Have always felt that is to wide for me but have managed to deal with it.

                    Don't know if I will get much of a response in the short time I am asking.
                    Attached Files

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                    • #25
                      I'd make the back next hole straighter and perhaps one hole lower,or more, for back height. That puts the back below your scapulas and allows you to sit a bit straighter and wheel easier. You're a T10 so can go lower.
                      I'd also put a leg strap around your legs to bring the hips more inline. I used gym bag straps t first and now velcro straps. Feet are too far back on the foot rest and leg length is a little too long. There should be a two finger width distance between the back of the knee and cushion edge. If you like your feet that far back, tighten up the back sling to bring your body a bit more forward,

                      If you can tighten up the lower back that'd bring your shoulders in a better wheeling position . THe reason your sliding forward is mainly the leg length is too long and seat length is too long.You have to slide forward for your feet to rest on the footrest. How hard is it for you to doa wheelie the way it's set up? I was told DME's like to make a chair too wide because they think you'll get that big. They're right, if given a wider chair, our body will naturally spread out. For myself, The strap bringing the hips together, makes a smaller seat width. I use an 18" wide with an axle spacer to widen the wheel width to match the way I wheel. Looks like your toe in-out is out alignment a bit.

                      A one point for your doc to use is the seat length is too long forcing you to slide forward putting extra pressure on the Sacrum. If you do order a new chair get either an 80 or 85o front end. Good Luck BigE.
                      Last edited by Patrick Madsen; 05-14-2019, 02:31 AM.

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                      • #26
                        My opinion...I think your backrest is still way too high and should be angled more forward (at least 90 degrees). I agree your seat is too long, but it's way easier to get a shorter cushion and seat sling then getting a whole new chair. The frame length is a little long, but manageable if your cushion were shorter. I think you should go back to 24" wheels or raise the seat to floor height if it's adjustable. Your finger tips are well below your axles with your arms down which is going to make pushing a lot harder and less efficient. You are probably having to raise your shoulders when you push, which isn't good.

                        I think the position of your feet on the footrest is fine, I prefer to tuck mine under as well. If you still can barely do a wheelie the biggest problem is the center of gravity is too far back. Your backrest angle will affect it as well, but to a lesser effect. Get the backrest height and angle set right first, then move the COG foward until you can easily pick the front wheels off the ground.

                        Long story short, you're in an adjustable chair and should be able to get it to a point that it is more comfortable. I'm afraid if you get a new chair without figuring out why you're having your current problems, it's just going to keep happening (like it did the last time you got a new chair).
                        Last edited by Brad09; 05-14-2019, 09:02 AM.

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