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VPI Classic motor question

I have a Classic with the 600 RPM motor. The table is 2.5 yrs old. The motor started making a swooshing sound on each rotation about a year ago which continued after lubricating it. The sound could only be heard with the ear to the pulley and the speed stability seemed fine with the SDS. I lubricated the motor again about two weeks ago, including removing the pulley and cleaning the shaft, and the swoosh continued. Today I started hearing a more frequent noise that sounds like a very low friction sound. Still very low, but what the hell?

Is there is anything I can do about it at this point? I don't think putting more oil into the motor after I just lubricated it will fix it. If the speed appears to be ok, should I just ignore it? The first time I heard the noise VPI did not offer any advice beyond lubricating the motor. Is replacing the motor the only way to take care of the problem perhaps?

Any advice and feedback would be appreciated.
actusreus

Showing 7 responses by brf

brf
1,715 posts
 
When you lubed the motor shaft did you remove both the pulley and brass collar? The brass collar holds the motor shaft in position. The motor shaft has about 2mm of up and down play and you need to adjust this play until your motor runs silent.
brf
1,715 posts
 
You need to experiment with the brass collar position. If you pulled the motor shaft all the way up and then fastened the brass collar, that is more than likely the source of your noise. Let the shaft fall the way down, and then pull it up ever so slightly and fastening the collar. Turn the motor on w/o the pulley and listen for noise. If the noise is still present, repeat the process with the motor shaft just a bit higher than previous.
brf
1,715 posts
 
If you run the motor without the brass collar you will get noise as the motor is not positioned correctly within the assembly. Just try the brass collar with varying shaft heights...it cost nothing. If all else fails, give VPI a call.
brf
1,715 posts
 
Actusreus, did you try the collar/shaft in different positions other than all the way up??
brf
1,715 posts
 
732-583-6895

VPI's phone number
brf
1,715 posts
 
Actusreus, did you ever hear back from VPI?
brf
1,715 posts
 
Try it all the way down, and then slightly up from the down position. That is how I do it and it works. Give it a try, you never know.
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