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Strange sound on my Nerf Hailfire-what is it?

Hello! Nerfrock' here! Just recently I decided to fire up my good old Nerf Hailfire again-but this time, something was different. When I pulled the acceleration trigger, the motor started up fine, but when it got up to full speed, it started making this wierd vibrating 
sound as if it were a motorcycle being pedaled up and down. Even with all my Nerf modding experience, I am baffled... Does any other nerfer (or anyone in general) know what it is? Do I just need to change the batteries, or is it something else (I hope not) .

Thanks!
-Nerfrock'

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My guess is that one of the gears or wheels inside the motor is lopsided. Do the darts still fire
nerfrocketeer (author)  Dr MonkeyMan1 year ago
Yes they still fire, and that's a good suggestion! But I really can't tell. I'll see if I can do something about it.

:)
Ok good luck
nerfrocketeer (author) 1 year ago
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