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I have a problem!!! ADI disc brake.

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  • I have a problem!!! ADI disc brake.

    So I have a tilite TR with ADI disc brake.

    My problem is that, now the push feels harder. It even wears my shoulder. Now i have 'clicking' sound at my shoulder when I push, particularly up the hills.

    I did thought it was a problem with the brake. but even when i loosen the brake pad to null, i cant get the wheel to spin loosely!!!it only spin 2 or 3 times at most. so it's not the brake, but maybe the disc.or maybe the mechanical thingy that connects the spline insert drive from the wheel to the brake.

    I was thinking if getting rid of the disc brake and changing it to conventional brake would be better. But since I have tapered seat, my push-to-lock on my old tilite wouldnt work. It barely touches my wheel.



    So I know this brake is bicycle stuff.the mechanical of the caliper is indeed replaceable and serviceable in almost any bike shop.but is the connector (shown with the pointing arrow) a standard?can a bike shop fix that? (assuming that is the problem)

    If i wouldve known the cost of having a brake is 'harder to push', i woudnt even bother thinking about it. My hand is not even a 125bhp with high torque that can ignore hi-volume friction.
    walking is OVER-RATED!!!

    Broken in August 14th, 2003. T9-L1 complete.

  • #2
    Could it be the bearings?
    "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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    • #3
      could it be? but it happens to both of the wheel simultaneously.but i'll give it a check! *sigh*

      if it is, i might need a better bearing.i've only been using the chair since 6 months ago. *sigh again*
      walking is OVER-RATED!!!

      Broken in August 14th, 2003. T9-L1 complete.

      Comment


      • #4
        I know nothing about db, sorry, but I have a tr with tapered seat, and I use push-to-lock brakes attached to the lower frame bar. Because the angle of attack is different, it is almost impossible to push the tyres under the brakes - works nearly as well as the ds locks I used to have. That might work for you if you need to remove the db for a repair

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        • #5
          Hi Nia,
          It seems unlikely that you'd have problems with both bearings but it could be.

          But first:
          Is the disk rubbing on the fixed pad?

          It could be that the camber tube has slipped a bit, forcing the disk into the pad.
          Loosening the brake cable wouldn't help if that's the case.

          You can loosen the fixed pad by backing out the allen head screw in the hole of the red ADI badge (just below the arrow in your pic).

          It that is the problem I can describe a more permanent fix as well as some other tips to improve the brakes performance.

          Jeff
          Doh!

          Comment


          • #6
            @amy : thanks!how come i didnt think of that?i even put in at the backrest LOL

            @jeff : actually i have loosen the brake pad entirely but the disc wont move freely.now that i think of it, i cant remove the dics brake because the camber tube has been cut and would affect the spacing greatly if removed. *sigh* it'd be great if u have solution, or a view of what the problem is.

            owh and by the way, if DaleB meant wheel bearing, i've checked it out and it seems to spin freely on my axle, so i think we can rule that one out.

            i'm sorry if i ask a dumb question, but do they have bearing in camber tube?
            walking is OVER-RATED!!!

            Broken in August 14th, 2003. T9-L1 complete.

            Comment


            • #7
              I'm not exactly sure how they build their setups; accept I do know that the disk should spin totally free, wheel on or not. The star-bit on the wheel locks into the star receiver on the camber tube connected to the disk which is how it all works. My guess here is that the bearing in the camber tube is pressed too tight or if it's screwed in, torqued too tight. That's the first thoughts that come to mind.

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              • #8
                Originally posted by nia adha View Post
                @jeff : actually i have loosen the brake pad entirely but the disc wont move freely.now that i think of it, i cant remove the dics brake because the camber tube has been cut and would affect the spacing greatly if removed. *sigh* it'd be great if u have solution, or a view of what the problem is.
                Nia,
                In the pic it looks as if the disc is not centered in the opening of the caliper, which would force it against the outer fixed pad.
                But then it may not be - it's tough to see for sure from the angle of the photo. And it's a problem that I've experienced which is why I suggested that you check it.

                Tomorrow I'll take a look at mine and see if I can see another reason that your hubs might be dragging.

                Jeff
                Doh!

                Comment


                • #9
                  Originally posted by nia adha View Post
                  I was thinking if getting rid of the disc brake and changing it to conventional brake would be better. But since I have tapered seat, my push-to-lock on my old tilite wouldnt work. It barely touches my wheel.
                  .
                  As you can see i had scissors brakes in my tapered seat and they touch wheels no problem.

                  Comment


                  • #10
                    Yes, I thought you should check t he wheelbearings.

                    If it is happening on both sides, with the calipers removed, I would be surprised if the problem was any individual piece on both sides failing at the same time.

                    I think it is mostly likely something with the system that can affect both sides simultaneously, like the cables or lever system, just guessing, though. Todd at ADI is who you need to be asking!

                    Originally posted by nia adha View Post
                    @amy : thanks!how come i didnt think of that?i even put in at the backrest LOL

                    @jeff : actually i have loosen the brake pad entirely but the disc wont move freely.now that i think of it, i cant remove the dics brake because the camber tube has been cut and would affect the spacing greatly if removed. *sigh* it'd be great if u have solution, or a view of what the problem is.

                    owh and by the way, if DaleB meant wheel bearing, i've checked it out and it seems to spin freely on my axle, so i think we can rule that one out.

                    i'm sorry if i ask a dumb question, but do they have bearing in camber tube?
                    "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

                    Comment


                    • #11
                      i hope u solve your problem Nia. Im still deciding whether to get ADI disc breaks or not if its too problematic i think i'll go with surelocks
                      I've got 99 problems but the wheelchair ain't 1

                      Comment


                      • #12
                        Did you try spinning the wheel on a different chair without the brake setup. That would tell you if the wheel spins freely or if it is a pad rubbing

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                        • #13
                          @patrick : yeah i did, and it does spin freely.it's not a pad rubbing, since i loosen the pad that it doesnt touch the disc and still the wheel wont spin freely.

                          @aaron : now i'm thinking about changing to surelock.but since my camber tube were cut to fit the disc brake,i might need to get a new one *sigh*
                          walking is OVER-RATED!!!

                          Broken in August 14th, 2003. T9-L1 complete.

                          Comment


                          • #14
                            Originally posted by DaleB View Post
                            Todd at ADI is who you need to be asking!
                            Agreed.

                            PM him: /forum/private.php?do=newpm&u=15830

                            Comment


                            • #15
                              Hi nia adaha ;
                              Here is a interesting link http://www.ohio.com/news/116383619.html I think his phone # is on his blog just read the whole article and maybe drop him a line .


                              This is from my own personal experience regarding whatever it is that we do to make people happy .
                              Sorry if my typing is long ;



                              Everything has to be set up 100% plumb I chop / modify motorcycles etc .
                              I've seen a elcheapo bearing here is another thing the end caps that hold the bearings in the tube
                              Being these have threads . some things use set screws and everything induces torque .

                              A tread has to be tapered to screw a cap ( bearing cover ) or whatever in but because of the actual thread there is a angle to anything even the slightest face angle on a bearing makes a world of difference .

                              So if a bearing cap holder is over tightened something can go out of plumb not 100% square this is why in motorcycle customizing we over compensate take into all these variables

                              I take into account the persons weight , their style of use , the way one sits on a product into consideration to allow us to make something as comfortable . easy as possible .

                              Although bearings are supposed to fit inside a tube , socket pocket tightly i've seen a no frills bearing someone else put in their bike a little crooked and give the driver / owner a fit on the motorcycle because they like to do their own work at home . On a Harley DynaGlide last year to be exact boy his rear tire would drag when he sat on his motorcycle .
                              The problem < first he used no frills bearings and 2ndly he didnt know how to square up a motorcycle because bubba at home had to do his work then we fixed the problem


                              When we sit in our chairs I take into fact that some flex is apparent especially with these newer super light ones .

                              Maybe bring your wheelchair to a bicycle shop and have the tech look into how the bearings are .

                              Sounds like something is not squared up because disk brakes you should be able to spin your tires easily and freely unless they are dragging some but it shouldnt .


                              I hope you find the problem and get it resolved

                              Our shoulders mean so much to us

                              Have a good weekend

                              Sincerely ;
                              GL
                              Last edited by GL; 02-25-2011, 02:17 PM.

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