Lofwing Posted June 24, 2016 Share Posted June 24, 2016 Hello! After much research I decided on a IPS 121+/T350+ as my first EUC. It's a new unit ordered directly from IPS. It arrived yesterday and when trying it I noticed a grinding noise when accelerating from standstill or changing directions. Please see the video shared on google drive: https://drive.google.com/file/d/0B2qAowkh17mSZVVfX05mSEU5cHc/view?usp=sharing The sound is only present when the unit is switched on and there's no difference when changing tire pressure. I've never heard the sound of an EUC apart from youtube vidoes. Is this a normal engine sound? Link to comment Share on other sites More sharing options...
Jurgen Posted June 24, 2016 Share Posted June 24, 2016 difficult to say from the vid if you ride at higher speeds and at a constant pace is the noice still there? Link to comment Share on other sites More sharing options...
Lofwing Posted June 24, 2016 Author Share Posted June 24, 2016 So far I've only tried it at sub 5km/k indoors. But the sound seems to dissapear as soon as the wheel picks up speed. Link to comment Share on other sites More sharing options...
Jurgen Posted June 24, 2016 Share Posted June 24, 2016 it's probably just the motor accelerating and deceleration around idling speed, it was much more noticable with the older versions. I'm not sure if it's a good thing for the motor to be doing this for a long time, as it's built to run at a certain speed. enjoy, and start wearing full protective gear once you ride outside. Link to comment Share on other sites More sharing options...
Lofwing Posted June 24, 2016 Author Share Posted June 24, 2016 Thank you for the respons. You're probably right. I'm a bit of a perfectionist when buying things and tend to imagine flaws. Link to comment Share on other sites More sharing options...
Jurgen Posted June 24, 2016 Share Posted June 24, 2016 2 hours ago, Lofwing said: Thank you for the respons. You're probably right. I'm a bit of a perfectionist when buying things and tend to imagine flaws. A healthy reflex when buying an EUC Link to comment Share on other sites More sharing options...
Damp Rabbit Posted July 11, 2016 Share Posted July 11, 2016 Yes, I know of 2 IPS 121's and a few other IPS' with different numbers that do this. Mine does it and it worried me when I got it. My friends have Ninebot One E+'s that do not make this noise. Link to comment Share on other sites More sharing options...
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