new pipes, hypercharger and... whining sound

Message

le_r0umain · Mon Jul 11, 2005 4:01 pm

Hi all,

VStar 1100 Custom. I've just got my new PCS Monster pipes and the hypercharger on (rejetting and all @ the dealer).
But now I hear a whine at idle (in spite of the louder pipes). That whine closely follows the engine rpm. It also looks like the idle rpm is a little lower.

here's a sound clip http://members.shaw.ca/le_r0umain/whining_noise.wav

What could be the source of the whine ?

tia

#2 Unread post by **ZooTech** » Mon Jul 11, 2005 4:04 pm

My bike whines like that pretty much all the time. If all you did was add a hypercharger and pipes I'd assume the change in intake flow caused the whine. I attribute mine to the stator.

le_r0umain · Mon Jul 11, 2005 6:30 pm

ZooTech wrote:My bike whines like that pretty much all the time. If all you did was add a hypercharger and pipes I'd assume the change in intake flow caused the whine. I attribute mine to the stator.

I suspect a decrease in the idle RPM for the "sound".
By stator, do you mean alternator ?

BudmanTom · #4 Unread post by **BudmanTom** » Tue Jul 12, 2005 5:50 am

Wife?

txbadboy · #5 Unread post by **txbadboy** » Wed Jul 13, 2005 11:02 am

BudmanTom wrote:Wife?

LOL! Thats why I'm single, gentleman!! (not to mention 21...too freakin young!)

le_r0umain · Wed Jul 20, 2005 8:55 am

Went to the dealer and the mech said it's normal gearbox whining.
I wonder how come I did not hear it when the pipes were quieter ?!

TechTMW · #7 Unread post by **TechTMW** » Wed Jul 20, 2005 10:31 am

You opened things up a bit ... more sound transfer here and there ... It happens!