Motor Question (Sound Clip)

[phidailo]

When I release the throttle a weird noise occurs...is this normal?

[MetalMan]

That is very weird indeed! Does it run fine other than that tone (driving)?

[phidailo]

I just noticed it yesterday after a full run...it seemed to do very great execept a lil hot on the motor cause of the 20/51 gearing. I chipped my spur gear so it won't be running for a few days.

I am worried cause my first setup (8xl/9920) basically smoked after 1 month and I just got this second setup last week.

[squeeforever]

I would try and reprogram the esc.

[phidailo]

Just tried it with no luck. Should I give it another run in a few days when my gear gets in or send it back to Mike for him to look at it? Sound is definitely coming from the motor and hope nothing inside is damaged. Perhaps, open both end bells?

[coolhandcountry]

I think it has a video game lodged in it.
Did you run over a games system without knowing?
It is strange indeed. Does it do anything strange or just make the noise?

Originally Posted by coolhandcountry

I think it has a video game lodged in it.
Did you run over a games system without knowing?

:D :027: :005:

[BrianG]

Is there any play in the bearings (front-to-back or up-and-down)?

[squeeforever]

Yea, I'm with Leroy. I think you ran over Pong....

[phidailo]

Brian - there is slight play front to back. Also, it rattles when I shake the motor

[BrianG]

Originally Posted by phidailo

Brian - there is slight play front to back. Also, something rattles when I shake the motor

Well, there will be a little play, but if there is too much, the rotor may slide forward while spinning, and then smack back again when it stops or decelerates (or vice versa).

I'd be more concerned about the rattling personally. I'd send it back to Mike before you try prying off the endbell unless he says it's OK to do so.

[phidailo]

Thanks, the sound and rattle was coming from the slight play so I tapped the shaft forward a bit to stop it. I happen to damage the bearing cap in the process. Can I purchase this type of bearing separately? and if so where?

[BrianG]

That, I can't say. I'm sure someone else will have the answer though...

[MetalMan]

The bearings are a rather uncommon 5x11x5mm size. The standard 5x11 bearings you might buy are only 4mm thick, instead of 5. In my motor I put in a 5x11x4, and some shims to take up the play, and it works somewhat decently.

[coolhandcountry]

I would run it cause if it works right and only makes noise. How can you fix it cause it is not broke?