Chelsea 150 Scooter buzzing noise

[twinx1649]

Hi from Michigan:
I just took delivery of 3 Chelsea 150's and have a strange resonance noise from all three. It happens during part throttle and sounds a lot like a heat shield or something like that. The sounds is worse at heavier throttle loads (still breaking-in so not that heavy) and sounds like something that will need immediate attention, if you know what I mean. Overall, very pleased so far and the paint is beautiful considering the price point of these units. As far as quality is concerned the PDI and necessary repairs are taking a while to get sorted out.

Thanks for any input.

Jim Mc.

[tortoise]

Chelsea 150's (https://www.bmsmotor.com/scooters/product_15739_Chelsea_150.html) . . strange resonance noise

Have you tried placing the scooters on the center stand, then getting down on your knees and listening while an assistant operates the throttle? If no joy, perhaps the center stand is making the noise when retracted.

[twinx1649]

I was hoping someone else solved the problem since all 3 have the same annoying buzzing issue. With harder acceleration the noise get pretty bad. I'm still going through the PDI issues as they come up. I love the styling but all that plastic body work makes it difficult to work on. I tried removing the side panels but fear of breaking the plastic retaining snaps prevented me from doing so.

Thanks for the advice.... I have Steelman Chassis Ears so I can clip on sensors and keep sorting out the noise source.

Thanks

[fratermus]

I'd doublecheck the bolts holding the exhaust on, etc.