Help with commutator readings

[XBuddawg]

Hey ya'll,

Any electric motor GURUs out there?

I am sure most of the tech guys ar eat Jasper, but is there anybody still here that can help? I took readings on my starter commutator, and they look a little funny. Oh, by the way, the starter will turn sometimes, but sometimes it won't. This leads me to believe that part of the armature could be burnt out. It just depends on what part of the commutator it stops on, whether it will turn over the next time or not.

I have the readings in an Excel file, (.xls) if anybody can open it up and take a look. I'd appreciate it.

Readings (http://www.byuboyz.net/readings.xls)

Thanks!
Later,
Buddy

[Euroski]

Been awhile since I had to check one but from memory(what's left of it) here goes. If it's a 2 brush com... and you place your ohm meter 180 degrees apart on each segment then there should be a resistance reading. Keep doing this for each "pared" segment. I think each comm.. segment should only have one winding wire from each unless it's a 4 brush starter motor. Might want to check with a local shop that does starters and maybe they can rewind one for you cheaper than a new one...:confused:

[patchesII]

my starter started acting up when rain was getting in it from the louvers in the cowling.had my rebuilt locally, they had it done in less than a day for $53.00. works as good as a new one. erik

[Rickracer]

Check out your local starter and alternator repair facility.:cool:

[schematic]

The first and most obvious indicator is going to be discolored or burnt bars. Broken armature connections will cause burnt bars. They usually fail right where the wires connect to the bars. Thorough testing would require a "growler". If the armature looks good (all commutator bars are a consistant color) have a good look at the brushes. If they are worn, they may only make intermitent contact causing intermitent starting. (Brush wear is common)
http://members.shaw.ca/randalp/boat.gif Good Boating!!

[us1]

When the starter is assembled and standing vertically push down on the top of the shaft with the gear on it. When released the shaft should spring back up to its original location. If it does not your brush springs have been over heated or the brushes are wore out.

[Liqui-Fly]

is always bitchen bout dem commutator rings I leave on the table when I put the phone with the sweaty earpiece (yuk) down on the coffee table. LF