Brammo Owners Forum

Brammo Empulse Discussion => Brammo Empulse => Topic started by: plukcc on March 22, 2014, 12:02:13 AM

Title: Strange sound beneath the seat when charging start
Post by: plukcc on March 22, 2014, 12:02:13 AM

When ever i start charge the battery
Strange sound (like insect) comes out from beneath the passenger seat
I can email u the voice file as I have recorded it
I can't hear it once the fan turns on

Title: Re: Strange sound beneath the seat when charging start
Post by: frodus on March 22, 2014, 12:14:46 PM

Probably the switching frequency of the charger. If you have noisy power coming in, it will be worse. Pretty normal, but if you could record it and post.... that'd help.

Title: Re: Strange sound beneath the seat when charging start
Post by: BrammoBrian on March 23, 2014, 08:28:57 PM

Quote from: frodus on March 22, 2014, 12:14:46 PM

Probably the switching frequency of the charger. If you have noisy power coming in, it will be worse. Pretty normal, but if you could record it and post.... that'd help.

I agree with this diagnosis.  If it's a "popcorn popping" or static-like sound, it's the audible switching frequency while the voltage is relatively low.  My bike does this as well. 

Title: Re: Strange sound beneath the seat when charging start
Post by: plukcc on March 26, 2014, 04:58:20 AM

It likes the insect high pitch sound
May I have an email that I can send the file
Tks

Title: Re: Strange sound beneath the seat when charging start
Post by: frodus on March 26, 2014, 02:40:13 PM

You can upload attachments

Title: Re: Strange sound beneath the seat when charging start
Post by: plukcc on March 27, 2014, 06:51:42 AM

Stupid iphone can't select sound files