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Buell Forum » Old School Buell » Archives OSB 001 » Archive through July 14, 2007 » Quick Grounding Question « Previous Next »

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Shadowracerx1
Posted on Tuesday, July 10, 2007 - 10:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Can powder coating interfere with grounding? I'm trying to chase down a clacking starter problem that I didn't have when I pulled the bike apart.

Thanx
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Akbuell
Posted on Tuesday, July 10, 2007 - 11:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Short answer (sorry, couldn't resist) is yes. As a quick check, clip the pos probe of your multimeter to a power source, then see if you get continuity to the painted part. You may have to scrape a surface (ie, under a washer, ect) to get a good ground.
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Buellboiler
Posted on Tuesday, July 10, 2007 - 12:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I think you will find that powder coat is a better insulator than paint. Remove all powder coat where to your ground strap is grounded to the frame. There may be times where a continuity test will show a good conduction path but when you attempt to pass 100 amps of starting current it won't work. Clean it well and you should be good to go.

Boiler
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Shadowracerx1
Posted on Tuesday, July 10, 2007 - 12:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanx... If I can get her started tonight, I'm a happy guy.
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Sparky
Posted on Tuesday, July 10, 2007 - 01:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You might run a tap into the threads of the grounding bolt/screw points too. The powder coating can also get in there.
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Kyrocket
Posted on Tuesday, July 10, 2007 - 03:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

They're right! I used to powder coat and assemble large electrical enclosures and we used grinding discs and air grinders to clean off places to ground to. Powder coat is an excellent insulator but it is very durable.
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Koz5150
Posted on Tuesday, July 10, 2007 - 05:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Check the grounding strap, I had the same issue. To fix I replaced the washer witha stainless one and used a dremmel tool to clean some of the powdercoating away. Also, check the washer on the voltage regulator as this will rust also!
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Sparky
Posted on Tuesday, July 10, 2007 - 08:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Do you know the condition of the battery? If the battery was not being trickle charged while the bike was apart, it could just be low on charge. A battery that is not fully charged or is old and ready to expire will exhibit that telltale clacking sound if everything else (cable & ground connections) is OK. Might just need a few hours on a trickle charger.
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Shadowracerx1
Posted on Friday, July 13, 2007 - 03:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Note of caution: When powder coating engine and / or mounting block, leave the surface between the two bare. I ran a ground cable to a bolt in the primary and it cleared up the problem (now I have a completely different reason why it won't start *sigh*)

Thanx for the help.
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Buellistic
Posted on Friday, July 13, 2007 - 08:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A failing or poorly maintained battery can fool you into thinking you've got all kinds of BIZARRE GLITCHES with your electronics !!!

In BUELLing
LaFayete
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