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IPS 121+/T350+ grinding noise


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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?

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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.

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