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August 2005

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Subject:
From:
"Blair K. Hogg" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Blair K. Hogg
Date:
Tue, 9 Aug 2005 07:49:08 -0700
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Please excuse this off-topic post, but if there were anywhere that this question could get answered, it would probably be here. 

I attempting to repair my lawnmower, which acts like it's not getting enough gas - runs normally, then slows down, then speeds back up again. Only problem is that it is a B&D rechargeable electric mower. 

Well, being the engineer that I am, I take the thing apart and find that one of the motor brushes has worn down to the point where the wire connected, and now no longer makes contact except by accident. Further investigation shows that the other end of the brush also has a contoured edge, so I suspect that these are made symmetric to simplify assembly (can't go in backwards), which suggests that if you knew about it you could reverse them prior to it getting worn down this far thus extending the life. 

Well, I've ordered the replacement brushes from B&D, but I'm wondering if I could reattach the wire somehow I could get it working again. The only problem is that I don't know if I would be able to solder directly to the brush. I guess it wouldn't hurt to try, but I'm wondering if any of our experts out there has any advice on this.

Thanks,

Blair

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