![]() ![]() I believe it was also heating up, but did not get hot enough to melt or burn the lacquer.Īn attempt to access and assess the damage from the back of the board was unsuccessful the metal plates appear to be glued or siliconed on.Īfter removing the silver washer an irregular edge from 5 to 8 o'clock became apparent. Note the lightened, half moon shaped area at 6 o'clock on connector A. It might have been fastened again with small bits of hard lacquer underneath it this would increase resistance and lead to heating up of the connection until the fragments melt and run down the stud. It might have gotten in when it was sprayed on and was still liquid, or in fragments when the cables were undone and the stud was loosened. It would then be fastened with insufficient torque by only screwing the nut back on and is subject to loosening due to vibrations, particularly if the gearbox is faulty.Īlternatively, or rather in addition to this, lacquer could have gotten into the space where the stud is making contact with the copper of the board, increasing resistance and causing heat. The screws fixing the three cables to the connectors undo in the same direction as the studs they are fixed to undoing the screw can loosen the stud going into the board. My guess is that the connector was loosened when the tech replaced the main fuse. It sets when things cool down, and next time you ride your scooter the problem is worse, until it gets so hot is starts to smolder and smoke and turn black: ![]() Once something gets hot, the lacquer melts, I believe, then runs into cracks and further increases resistance. ![]() I believe the half-moon shaped lighter areas at 2 and 4 o'clock around the connector C are areas where the board got hot.Īt 6 o'clock is a black lump of burnt "lacquer". The smell comes from the heating and burning of the waterproofing clear film (?=lacquer?) applied to the whole surface of the MC, or the burning of the board itself. It seems obvious to me that laying the scooter onto it's side has nothing at all to do with the failure in my opinion you could run that controller board in an aerobatics plane in full flight if it is put together properly. It originated from the connecting point of one of the three cables from the motor controller to the motor. I have identified the source of the "sickly sweet" smell. Once the Vectux is up and running I'll let you know if this repair lasts. I waited 72 hrs before installing the springs again to let the epoxy cure. The same side stand repair could probably be done without removing any panels. I removed the panels to get better access, and I needed to remove many of them anyways to get to the batteries etc. The pin can turn into a nasty bullet when it gets catapulted out of the hole by the springs - wear safety goggles during repair attempts!Īdding a third washer enables tightening of the stand screw to the degree that the wobble is completely eliminated and it still moves sufficiently freely. Time will tell if this repair lasts once the Vectux is off the rock again and being used.Īfter removal of the batteries it was obvious that it would be possible to unscrew the entire stand bracket, remove it from the scooter and weld the pin back in. ![]() Using the side stand (before adding a washer and tightening it) to push the pin up a little bit enables the epoxy to set the pin in a position in which it will not be broken off again by the side stand. Then cleaned with compressed air to remove all dust. I used diamond tipped bits and a rotary tool to clean out all rust from the hole and to roughen up the pin surface to enable good bonding. It then puts enormous pressure onto the pin until it breaks off. The cause of the breaking off was probably that the side stand wobbles a bit. So here are the dimensions in case you need to make a new one: The pin had fallen out when I gently wobbled the side stand by hand.Ī more likely scenario would be that it falls off whilst riding or gets shot of by the spring that it holds. Until the battery was removed it was not obvious if the whole side stand bracket could be unscrewed and then screwed back on.īecause of this I decided to try a epoxy-resin repair job rather than welding. One of the first steps to get my Vectux going was to try to repair the side stand. ![]()
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