tag:blogger.com,1999:blog-8796610487071943623.post9192946765279678782..comments2024-03-29T17:45:38.629+10:00Comments on Bruce Teakle's Pages: Xiongda 2-speed hub motor breakdown: slipping magnetsBruce Teaklehttp://www.blogger.com/profile/00911602199839526224noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-8796610487071943623.post-30984844237963564752020-01-23T09:13:32.491+10:002020-01-23T09:13:32.491+10:00Hello Rolland, you’re right: just unscrew the side...Hello Rolland, you’re right: just unscrew the side plate and pour some ATF in. <br />These XD 2-speeds can be good on trikes. I have a contact who has done this: an old man who put an XD on the front of his upright trike. He achieved his goal of improved hill climbing, and was happy with the high speed on the flat (but I was a bit worried about the high speed on the upright trike - they make me feel very unstable when they don’t tilt like a bike). Good luck! Bruce Teaklehttps://www.blogger.com/profile/00911602199839526224noreply@blogger.comtag:blogger.com,1999:blog-8796610487071943623.post-62672288783937496002020-01-20T04:20:09.823+10:002020-01-20T04:20:09.823+10:00thanks for the articles. I am going to order this ...thanks for the articles. I am going to order this 2speed hub from china and put it on a trike. I assume one just takes off the lid and pours some ATF inside and then reaassembles right? rollandelliotthttps://www.blogger.com/profile/14484345176511041843noreply@blogger.comtag:blogger.com,1999:blog-8796610487071943623.post-1295581403375236892019-06-29T01:36:43.580+10:002019-06-29T01:36:43.580+10:00Qucik update, Bruce. A magnet id broken into 5 pi...Qucik update, Bruce. A magnet id broken into 5 pieces and won't go back together correctly. Seems as if the internal magnetism repels the parts from each other, when fitted together. So I wrote to Bonnie for new ones, and a few sundry other parts. Until then, I'm riding my wife's 750 watt Evelo mid drive, with NuVinci Harmony auto trans. I'll also be riding my old mini bike rescue. It has the 48 volt, 750 watt, BLDC motor, geared down to 480 r/m, chained to my NuVinci 171 Developers Kit auto trans, used as a jack shaft. Auto shifting starts at ~350 r/m, and it is sprocketed for ~21 m/h. It will climb anything. St. Louis police are sanguine (bigger fish to fry) so I can grocery get with it, with impunity.<br /><br />As for lube, I'm convinced. The idea of it splashing and dissipating heat is compelling, so I'm going with your ATF. FYI, I see no evidnce of glue between the magnets and the drum. Might just have ground off (maybe that's the black specks I see in my lube), but do you know what they do at the factory? As for leaking, it's there, but minimal, even with PTFE lube that' probably less viscous than the ATF. I'm with you on that.<br /><br />Here's a link Ii sent Evelo when they expressed interest in my Nuvinci based mini bike. Complete with halting narration and loss of words....<br />https://photos.google.com/share/AF1QipN0ROhDQnUCvUUxsw5bHGMQRKt8E1jwvUfjo3AXFIXY-IkYVpdndspvot9L6qlPyg?key=LXNhR29yMmo3S2g0ZmlzRVFNOUdMVWxib2xXVXBR<br />bigoilbobhttps://www.blogger.com/profile/08760441445401997332noreply@blogger.comtag:blogger.com,1999:blog-8796610487071943623.post-83193629637399594082019-06-28T18:25:55.069+10:002019-06-28T18:25:55.069+10:00Hello Bob, it's very pleasing to know my effor...Hello Bob, it's very pleasing to know my efforts have been useful! <br />1. "Metho" is short for methylated spirits (in Australian), which means ethanol, with some added poison, from the hardware shop. Isopropyl alcohol would be a good option, but metho is cheaper. <br />2. Gear oil is worth a try, but I used ATF because of its lightness: I want the oil to splash from the windings to the motor case to carry heat. I can't see any harm in trying different oil. Perhaps there is some risk to the nylon gears from using oils, but I haven't seen it yet. <br />3. While you're fixing your motor, have a look at my recent edit to this post: https://bruceteakle.blogspot.com/p/it-seems-clear-xiongda-2-speed-motor-is.html . I recently had an XD breakdown that I thought was magnets, but it was broken TIG welds on the nylon sun gear. Just make sure this hasn't happened to yours. <br />Is your XD running on specified volts and amps, or have you over-powered it?<br />Good luck with your repairs, Bruce. Bruce Teaklehttps://www.blogger.com/profile/00911602199839526224noreply@blogger.comtag:blogger.com,1999:blog-8796610487071943623.post-13271573404561454902019-06-27T23:23:06.445+10:002019-06-27T23:23:06.445+10:00Hello Bruce, and many thanks. I'm pretty sure...Hello Bruce, and many thanks. I'm pretty sure my situation is utterly identical. Went over a bad St. Louis bump which lost me afender bolt and the harsh started right away. Same feeling of stall, same dimunition of it with either less throttle or higher speed (centrifugal force landing the magnets?), same limp home. Got the motor mostly apart, and no damage to gears or clutches and all turns. I'm poised to pull the drum off today, but I already know that I have one cracked magnet that wiggles with a tiny screw drive. 2 question. 1. "Turps" and "degreaser I get, but what is metho short for? 2. What do you think about 75-90 weight Mobil 1 synthetic gear oil as a lube? FYI, I followed d8veh's lead and put on synthetic PTFE gear grease on the metal gear side and lighter PTFE lube on the nylon gear side. I'm happy with the lubing, per inspection, but lots of black flecks, which I assumed are charred teflon. Thanks again for sharing Bruce. I would have never have diagnosed this myself. I will take and send pix soon.bigoilbobhttps://www.blogger.com/profile/08760441445401997332noreply@blogger.comtag:blogger.com,1999:blog-8796610487071943623.post-4166002123929317482019-01-22T06:49:59.497+10:002019-01-22T06:49:59.497+10:00Hello Mike, this is still my only motor that's...Hello Mike, this is still my only motor that's had slipping magnets. The XD 2-speed I've used the most (~8000km) has ATF but no problems with the magnets. The other couple of motors in use are fine too, but no ATF. I think ATF is unlikely to make trouble for you, except the usual issues of leaking out the axle if you lie the motor on its side. Bruce Teaklehttps://www.blogger.com/profile/00911602199839526224noreply@blogger.comtag:blogger.com,1999:blog-8796610487071943623.post-69885497002731781422019-01-22T05:19:11.005+10:002019-01-22T05:19:11.005+10:00Hi Bruce, just wondering if you have had this magn...Hi Bruce, just wondering if you have had this magnet slipping issue in your other Xiongda yet? I'm keen to do the ATF mod for better cooling but not sure it is worth the risk of the magnets coming unstuck!Anonymoushttps://www.blogger.com/profile/02772654345727481307noreply@blogger.comtag:blogger.com,1999:blog-8796610487071943623.post-27109355528528174362018-04-11T06:19:21.951+10:002018-04-11T06:19:21.951+10:00Hi Bruce. It looks like you have been busy. Thanks...Hi Bruce. It looks like you have been busy. Thanks for your very informative and detailed blog.<br />Just in case you don’t have time to look at my comments on the other blog.<br />Bonnie ask me to say Hi from her at Xiongda<br />Stewarthttps://www.blogger.com/profile/09714250550018738402noreply@blogger.com