Brand new Carbon GTR Street

Hi all, how are you all doing?

Today, I took my first e-skateboard Carbon GTR Street for the first ride. Pretty cool experience - I must say. Much to learn and I look forward to it very much.

However, upon reaching 17kmh, bang on 17kmh, I feel a vibration throughout the board. The vibration dissipates upon reaching 19/20kmh. The same story when slowing down from 19/20mkh to 17kmh I get the same vibration. Only at speeds in this range [17-19]. Otherwise no complaints.

Could the drive belts or bearings be the problem. Or such vibrations is something of a normal? Any ideas anyone?

thank you very much in advance.

 

I have same issue an just read in another thread it's normal apparently