G oog le Buell 1125R Forum | Login/out | Topics | Search | Custodians | Register | Edit Profile


Buell Forum » 1125R Superbike Board » Stator/Voltage Regulator/Charging System subforum » Archive through January 29, 2013 » Stator Testing ? « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Rried
Posted on Saturday, August 25, 2012 - 10:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This is probably posted somewhere in here but I don't see it. I think I know how to test the stator windings with an ohmmeter by just measuring the resistance between the three leads. In my case I tested at the connector to the voltage regulator. The reading should be low and there should be an open circuit (or very high resistance) to ground.

Does that sound right?

If so, what I see when I do this test confuses me. The reading between two of the leads is 0.6 Ohms, there are no shorts to ground from any of the leads, but the other lead shows an OPEN circuit to the other two leads and to ground.

I would think that the failure mode of the stator would be shorted windings. I can't imagine enough current flow to burn a winding open so I can only think there must be a broken lead from the stator somewhere.

Are there any obvious errors in my thinking?

Thanks, Ray
Top of pagePrevious messageNext messageBottom of page Link to this message

Jules
Posted on Friday, August 31, 2012 - 06:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nope - that sounds about right (as in I'd expect 0.3 Ohm or thereabouts between all 3 pairs and open cct to earth from all) so your reasoning is sound.

If you can start the bike I'd check the ACV, it's a "better" check of stator status.

Was it the big grey plug with the 3 yellow wires (rear of tank under rider's seat) that you checked it at? That's the connector closes to the stator (and pre-harness electrically)
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Password:
E-mail:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration