simpleton Posted January 8, 2016 Share Posted January 8, 2016 I have recently purchased (not yet received) a medium speed msuper. After placing the order I watched a few more youtube videos on it and I suffered from sustained buyers remorse. That scream it makes is horrendous. Some videos it is hardly noticable, others it seems terrible and can be heard from a significant distance away. Why is that? Do versions with different motor windings make more or less noise? I really think it will drive me crazy. I love the idea that these (EUC) devices are near silent. A 6.3kHz scream from the pwm carrier frequency is inexcusable in this day and age of modern electronics. I can only assume they did it because they have cheap FET drivers that cant drive the gates hard enough to run at speed. I should have it next week, I really think it will be a difficult issue for me to look past. This is not a cheap unit, why would they do this?? Link to comment Share on other sites More sharing options...
Donafello Posted January 10, 2016 Share Posted January 10, 2016 I love the sound mine makes. Its the HS version. If it didnot make that noise I would be dissappointed. I love it. So i'm not sure what your heard becuase I dont think its what Im hearing. Link to comment Share on other sites More sharing options...
EUC Extreme Posted January 10, 2016 Share Posted January 10, 2016 Same here. I like that fine quiet voice. Does not bother me in any situation. But I can see that some kind of frequency can interfere. Unfortunately, it does not have a lot of tasks. Perhaps one of the absorbent adhesive to the side of the engine could help. I do not believe. Link to comment Share on other sites More sharing options...
SlowMo Posted January 10, 2016 Share Posted January 10, 2016 Apparently, they have the 1,020 wh MSuper now. Link to comment Share on other sites More sharing options...
zlymex Posted January 11, 2016 Share Posted January 11, 2016 I guess the sound is coming from the motor. Link to comment Share on other sites More sharing options...
SirGeraint Posted January 11, 2016 Share Posted January 11, 2016 I only notice it when I turn the MSuper on in the house or while riding next to a solid wall. And then it's not that bad. It may be a case of the camera microphones picking it up better than ears do. I don't remember hearing it much in my videos though. Link to comment Share on other sites More sharing options...
Nevin@Tec-toyz.com Posted January 11, 2016 Share Posted January 11, 2016 I don't really notice mine. Just like @SirGeraint, I can only notice it be loud when traveling near solid walls and indoors. Out in the open, it really does not bother me. Link to comment Share on other sites More sharing options...
simpleton Posted January 12, 2016 Author Share Posted January 12, 2016 Hmmm, weird. I think some are significantly louder than others. I have just received mine, and it is quite loud. When someone is riding it, I can hear it from maybe 50 meters away which is disappointing. It's actually 12kHz, my generic cheapy is 16kHz and is inaudible to me. It is a frequency soley setup in the firmware. If their hardware was lacking, they should have brought the frequency right down low to a couple hundred Hz, then it would sound cool... not sone irritating high pitch squeel. On another note... I get a little bit of a wobble on at speed, any thoughts? Link to comment Share on other sites More sharing options...
EUC Extreme Posted January 12, 2016 Share Posted January 12, 2016 10 minutes ago, simpleton said: On another note... I get a little bit of a wobble on at speed, any thoughts? Takes practice. All of it is happening until you learn. Perhaps stretching the legs too much. Link to comment Share on other sites More sharing options...
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