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1968 M1M 24P Flathead- New charging issue   Message List  
Reply | Forward Message #25587 of 30871 |
Re: [the Chang Jiang Experience] 1968 M1M 24P Flathead- New charging issue

Richard

I do not have a spare rotor. The one that is now on my bike was the
spare. I am getting ready to put in a new order to the parts guys in
China. I guess I should buy two more stator/rotor sets. I do have my
original rotor someplace but it is bad I beleive.

When you say to insulate the brushes, are you talking about the two
metal spring loaded plates that are riding on the shaft? Is the shaft
with the divet in beween what everyone is calling the "slip rings"?
If so what do I set my voltage meter to to check this? Do I just put
the positive test leab and negative on each side of the divet on the
shaft?

Sorry for all the simple questions but I keep finding the same
walkthrough tests on the board here.

Thanks!

Rob

--- In thechangjiangexperience@yahoogroups.com, Richard Cook
<cookiecookr@...> wrote:
>
> Usually an alternator or generator has brass sections that the
brushes ride on. I believe these are usually called slip rings. In
the test Gary recommended you would have to insulate the brushes from
the slip rings by using something like a wire tie.
> You have a spare rotor don't you? Practice the test for continuity
on that one and then try it on the one on the bike.
>
> Regards,
>
> Richard
>
> --- On Thu, 1/1/09, widowactor <no_reply@yahoogroups.com> wrote:
> From: widowactor <no_reply@yahoogroups.com>
> Subject: Re: [the Chang Jiang Experience] 1968 M1M 24P Flathead-
New charging issue
> To: thechangjiangexperience@yahoogroups.com
> Date: Thursday, January 1, 2009, 4:35 PM
>
>
>
>
>
>
>
>
>
>
>
> Richard
>
>
>
> I have checked the connections for the charging light and all looks
>
> normal. I have compared my wiring harness on the new diode board
and
>
> the old one. The colors are of course different and I have to take
>
> the main wire with the main fuse out of the old harness and slide
>
> that connection into the new harness. Other than that all I have to
>
> do is match the wires to the old harness and the diode board can no
>
> longer be a cause of the charging issue.
>
>
>
> The next tests I want to do is with the rotor but I am a little
>
> confused on that test Gary said to do. I am not familar with some
of
>
> the terminology such as the "slip rings".
>
>
>
> Thnaks for your help.
>
>
>
> Rob
>
>
>





Fri Jan 2, 2009 3:00 am

widowactor
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Forward
Message #25587 of 30871 |
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Usually an alternator or generator has brass sections that the brushes ride on. I believe these are usually called slip rings. In the test Gary recommended you...
Richard Cook
cookiecookr
Offline Send Email
Jan 2, 2009
12:56 am

Richard I do not have a spare rotor. The one that is now on my bike was the spare. I am getting ready to put in a new order to the parts guys in China. I guess...
widowactor
Offline
Jan 2, 2009
3:00 am

You set the meter to ohms and then put the two leads together. It should go up and you adjust the wheel to bring it to the top of the scale. Check your meter...
Richard Cook
cookiecookr
Offline Send Email
Jan 2, 2009
4:55 am

Richard I took you up on your suggestion and I dug out my old rotor to experiment with. I set my digital voltage meter to the OHM category and set it to the...
widowactor
Offline
Jan 2, 2009
7:39 am

Rob,   I've not had to test down a Chang in this area. I could pretty easily tell you how to do a Honda but things are a little different. I'm at work now but...
Richard Cook
cookiecookr
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Jan 2, 2009
4:33 pm

Well some good news is I finished installing the new diode board. I had to swap a few pinned wires to different slots but I was able to match all the old to...
widowactor
Offline
Jan 2, 2009
9:10 pm

Good on ya Rob, That saves me trying to move all the crap in my half built garage. Off the top of my head I bet your old rotor was Ok. Regards, Richard ... ...
Richard Cook
cookiecookr
Offline Send Email
Jan 2, 2009
9:43 pm

Richard Thanks for offering to get your Honda rotor and do tests on it I am glad I did not have to make you go through all that. So you think my old rotor and...
widowactor
Offline
Jan 3, 2009
2:52 am

Rob, Corrosion could easily have keep that board from working if it was not properly grounded. I have a Chang rotor somewhere, actually I know what cabinet it...
Richard Cook
cookiecookr
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Jan 3, 2009
4:06 am

Richard Speaking of diode boards, someone on here had mentioned soldering a good ground wire for the diode board. I see that the outer casing of the diode...
widowactor
Offline
Jan 3, 2009
6:23 am

I don't know about your Rob but mine grounds right to the frame. I suspect that guy may have had his remotely mounted. Now wouldn't you look a silly twit...
Richard Cook
cookiecookr
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Jan 3, 2009
6:19 pm

Richard I completely agree why ground it if it is obviously already grounded. I will have to find the posting that stated it is a good idea to solder a ground...
widowactor
Offline
Jan 4, 2009
9:36 am

You know, there's really no harm in having several grounding points. My bikes are grounded to the both the bike and sidecar frames. You might be surprised at...
Dan Crossman
edsel400
Offline Send Email
Jan 4, 2009
12:28 pm

This is true on a lot of bits. Grounding is good! If it is bolted to the frame though I'll probably run another ground from the harness to the frame. ...
Richard Cook
cookiecookr
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Jan 4, 2009
6:48 pm

Richard That is what I am thinking of doing. Running a negative battery cable from the harness to the place where I have my main ground for the battery. I...
widowactor
Offline
Jan 5, 2009
1:49 am

That should be OK Rob if I understand you correctly. Glad she is working well, once you shake them down they can seem very reliable. I'm getting too casual...
Richard Cook
cookiecookr
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Jan 5, 2009
1:58 am

... the charging> I've had a big charging problem for some time. Rob, where did you buy your diode board? I'm hoping that will do it for me to. Thanks, ... ...
Lindsey
sillysidecar
Offline Send Email
Jan 5, 2009
2:56 am

Lindsey, That diode board has got to be the easiest electronic bit to fix I've seen in years. It's not encased in Epoxy (good and bad) and parts are available...
Richard Cook
cookiecookr
Offline Send Email
Jan 5, 2009
3:03 am

I read about Rob changing to a new board and he found corrosion, this seemed to fix his charging problem. I'm hoping I can do the same. Do you suggest...
Lindsey Dowell
sillysidecar
Offline Send Email
Jan 5, 2009
3:12 am

Even when I buy from somebody local like Fred it takes some time. The funny part is I often get parts quicker than for my Hondas. Raido Shack is on 4th avenue...
Richard Cook
cookiecookr
Offline Send Email
Jan 5, 2009
4:03 am

Lindsey Richard is right you might want to diagnose your diode board and fix it yourself. The diodes are found at Radioshack or other electronics parts house...
widowactor
Offline
Jan 8, 2009
5:59 am

Lindsey You can easily go ahead and rebuild yours with new diodes from Radioshack. I had just chose to swap mine out with the new spare I had to not have any...
widowactor
Offline
Jan 5, 2009
8:57 am

... regulator with the one listed in the toolbox. I have checked the connections in the HL bucket, I've checked the bulb. Thats it so far. I can give the...
Lindsey
sillysidecar
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Jan 5, 2009
2:03 pm

Lindsey Have you checked what charging if any your stator and rotor are putting out? Do you have a voltage meter? If not I would invest in a decent voltage...
widowactor
Offline
Jan 5, 2009
3:31 pm

thanks, I do have volt meter and have checked. I'm not getting any increase with higher revs. I've checked all connections but I think I'll get another battery...
Lindsey Dowell
sillysidecar
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Jan 8, 2009
9:43 pm

LD There is a great article that Gary posted in the files section of this forum. It was written by John Frazer and I found it very helpful with my electrical...
widowactor
Offline
Jan 16, 2009
3:45 pm

Dan you are right I at times do with mine was a 6volt not just for less headaches and simplicity, but it would be closer to the true heritage of a BMW R71....
widowactor
Offline
Jan 5, 2009
9:20 am

The electric starter and reverse are really nice options, but trust me, you can get by just fine without 'em. The way I see it, it's just more stuff that...
Dan Crossman
edsel400
Offline Send Email
Jan 5, 2009
12:35 pm

I hear yah Dan I love old technology as well. Simple is better! I have a 1959 Cadillac and a 1968 Cadillac Hearse as well. Both of those cars run like a dream...
widowactor
Offline
Jan 5, 2009
3:41 pm

'59 Cadillac? Now THAT'S an icon. To appreciate one, you really need to walk around it very slowly and study all the details. There's nothing else like it...
Dan Crossman
edsel400
Offline Send Email
Jan 9, 2009
2:09 pm
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