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My Smartdrive MX2

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    #31
    Thanks for the replies.

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      #32
      Another week, but not much smartdrive use.

      At the mall quite often I can't get it to start at all, and when it does start it quickly shuts off with stuttering false starts. There appears to be locations where this happens more than others so I imagine there's electromagnetic interference hotspots. There are so many shopfront security systems, ATMs, escalators etc etc etc that it's impossible to isolate any pattern as to which element is having most effect.

      At the park good going across grass when I got it started but couldn't start it readily about 40% of the time. Long push on road from picnic area to toilets made easy with the SD.

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        #33
        When you are pushing to get the Smart Drive motor to start are you doing a lot of small, quick pushes? If so, do one long push, let it start then once its going push again. I was having a lot of trouble getting mine to start but Max Mobility tech support suggested I change the way I push to give the motor a chance to engage and it did make a difference along with switching how the clamp was positioned helped with the traction. Doesn't always work with one long fluid push but the motor definitely started and worked correctly more often.

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          #34
          I have tried to keep to long smooth pushes but there isn't a pattern as at times a very slight push will start the motor. Often the motor starts and quickly goes through a series of stops/starts before giving up instead of keeping engaged. Other times it goes through a series of speed changes to top speed with no extra impetus.

          Location does appear to be relevant - in the open air it behaves as expected, indoors especially in 'electric' spaces it's erratic.

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            #35
            Originally posted by josieand1 View Post
            When you are pushing to get the Smart Drive motor to start are you doing a lot of small, quick pushes? If so, do one long push, let it start then once its going push again. I was having a lot of trouble getting mine to start but Max Mobility tech support suggested I change the way I push to give the motor a chance to engage and it did make a difference along with switching how the clamp was positioned helped with the traction. Doesn't always work with one long fluid push but the motor definitely started and worked correctly more often.
            I am very interested in this advice since I have so much trouble getting the motor to engage.

            Could you tell me what they said about positioning the clamp? I am having traction problems as well and the drive wheel feels bumpy.

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              #36
              Originally posted by grommet View Post
              I am very interested in this advice since I have so much trouble getting the motor to engage.

              Could you tell me what they said about positioning the clamp? I am having traction problems as well and the drive wheel feels bumpy.
              I have a Quickie GP (rigid) and the bar the Smart Drive clamp was attached to was too low. I talked to Max Mobility Tech support (Alex) and he said in order to get the best traction and smoothest ride the clamp should be attached to a bar that is higher off the ground. Since the bar above was too high, he told me to invert/flip the clamp on the lower bar and use the 26" setting. Essentially, the Smart Drive went from being attached under the bar to being attached above the bar. Alex emailed me pictures of how the inverted clamp should be so the Smart Drive had more of an angle.

              If you want to PM me an email address, I can forward the email from Alex (Max Mobility).

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                #37
                josiean1 This morning while out for groceries I used your advice on the push, wow. It's like a different world. Suddenly my SmartDrive works like it used to. One long push and let go. It engages almost perfectly. 9 out of 10. Thanks so much. Really looking forward to having easier now. I still do have the rumble at the drive wheel but I think it's a mounting thing. Alex sent me a different bracket I haven't had the chance to install yet. I will. I will also PM you so you can send me that email. I am learning that with the SD just a little difference makes a big difference. It was a good trip out this morning and, inside the grocery. I used to have trouble in the aisles but I gave a long gentle push and the motor engaged at a low speed. Wanted a little more speed, another long push and I was going. It's great :-)

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                  #38
                  Trying to put 2 and 2 together, I realise that the last time and also yesterday in the mall that the battery indicator behaved oddly.

                  In the time at the park yesterday there were 4 lights - full battery. When I started at the mall an hour later there were 3 lights. When I was having trouble in the electric zone I checked and saw that there was only one light and assumed a low battery could be contributing, and now recall that there was only one light the previous time.

                  Shortly after that, and operating properly, I looked and saw that there were three lights again.

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                    #39
                    How much will the new SD retail for? Also, can the SD be used without the wristband and instead use the buttons that attach to the frame. Is the new SD waterproof, as I read the old unit had some problems when wet.
                    A dolla makes me holla, honey boo boo! - borrowed from Honey boo boo child

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                      #40
                      Hi all,
                      Are you happy with the SD MX2? My son is 14 and has been using a Quickie 2 lite manual chair for 3 years.On the threshold of high school, he is the perfect candidate for a power assist. We are considering the MX2 for use in school so he can be independent going up ramps and getting around the campus faster and with little or no help. When we tested the MX2 attached to his current wheelchair, the power supply cut off as he was about to go up a ramp. http://youtu.be/i3wLeynTNik He had to slide back down and wheel back up with greater force in order for the motor to kick in.
                      Second instance - while he was going up an incline the power cut off as soon as he placed the hand with the wristband up on his lap. We are very concerned about the power cut off mid way up an incline. Would appreciate any inputs on
                      1. Is there a way to prevent this?
                      2. What can he do if it happens all of a sudden as he is on his own in the school environment with children running about and no one to specifically help him at that stage.
                      3. Power cut off whn the wristband accidentally taps the wheel rim - any suggestions to avoid this.
                      4. Will his cell phone in the pouch below his chair interfere? Will his laptop that he carries around on his lap or tucked in the side interfere?
                      5. How to avoid sudden acceleration? He is smart and intuitive with the functioning and use of a manual wheelchair...so any tips would help.
                      Do you feel this is the right power assist for him? As I drive a Volvo xc60, I feel this is a good option to complement his folding lightweight wheelchair that he is so comfortable using for the past 3 years. Hence e-motion and such add ons have been rejected in our decision making due to weight and ease of transportation considerations.

                      Any inputs/suggestions from all of you would be hugely appreciated. Thank you.
                      Last edited by brighteye; 3 Aug 2015, 12:42 PM. Reason: added video hyperlink

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                        #41
                        Originally posted by brighteye View Post
                        ...clip...Any inputs/suggestions from all of you would be hugely appreciated. Thank you.
                        MX1 might be better for a number of reasons if he can switch chairs.
                        Last edited by nonoise; 3 Aug 2015, 3:44 PM.
                        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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                          #42
                          Have they received FDA approval yet? I noticed they updated there USA youtube channel with Mark introducing the MX2.

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                            #43
                            Originally posted by brighteye View Post
                            Are you happy with the SD MX2? ... the power supply cut off as he was about to go up a ramp ... Power cut off whn the wristband accidentally taps the wheel rim ... How to avoid sudden acceleration?
                            Hi. These are things that I'm working through and I think Max Mobility should be giving an opinion as to whether these are inherent in the design or a signal that there's a fault that needs to be addressed in either hardware or programming.

                            The MX2 being in a single unit makes it the better option in general, and especially, with the folding chair - apart from the problem of how to attach the battery to the chair - as setting up and taking off the MX1 is a multi stage process that takes a great deal more time and effort than MX2:

                            Attach the motor
                            Attach the battery
                            Connect motor to battery
                            Plug in switches to battery
                            Place cables
                            Fix switches to chair frame (x2)

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                              #44
                              My Smartdrive MX2 #2

                              After viewing Max Mobility's video (https://vimeo.com/129735069) which shows Mark giving a small push to start the motor, and an almost imperceptible tap of the hand to switch it off, I realised that all my experiences were serious problems. Among other issues, I had to give strong pushes to start, which frequently still didn't get it going, and had to give a number of strong taps of the wristband to switch it off, and even then it would start up again multiple times until I finally got it to stop.

                              When I contacted the dealer they said that there is a known issue with some of the early release units and to bring it in for a fix. I stated that as I had these issues with it out of the box it should be replaced rather than opened up and fixed and they did so.

                              Today I had my first real outing - what a difference! A gentle push to start smoothly. A soft tap while holding the handrim stopped the motor reliably.

                              The message is that anyone experiencing any of the following issues should contact their dealer immediately:

                              Difficult to get the motor to start
                              Motor starts and quickly turns off or goes into a set of starts/stops with multiple wristband vibrations then completely stops
                              Motor stops when terrain changes (i.e going from flat to up hill/ramp)
                              Motor accelerates with multiple wristband vibrations without any extra pushes
                              Knocking wristband doesn't switch off motor
                              Knocking wristband switches off motor but motor starts again without any extra pushes

                              While I haven't been in all the situations yet that I've reported on above I feel that the new unit is doing all it should, and will post here to let you know what the Smart Drive does for me.

                              A note for Max - rather than wait for users to realise their unit isn't working properly, you should contact them to ask for feedback on their experience and let them know that it's not their fault for not learning to use it correctly if there's a problem.
                              Last edited by mishahu; 14 Aug 2015, 9:39 AM.

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                                #45
                                One of my regular walks in the neighborhood - 3.2 km from home to Bondi Beach and back. Mostly level, multiple kerb ramps, 1 moderate 150 metre incline, 1 steep 250 metre hill. All good and Smartdrive held to the requested speeds, switched off reliably when I wanted. The easier push to start allowed me to get the motor to start even on the hill.

                                This thing is genius!!!

                                I'm still trying to come to a solution for a one-handed wrisbtand though as the way I have it now it knocks against my handrim a lot and switches off.

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