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rectifier info please

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Motty View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Motty Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug 2018 at 17:56
I cannot see the regulator in the wiring diagram. Can someone else have a look and confirm if there is one fitted?
It’s more fun to try to ride a slow bike fast .....
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nab301 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote nab301 Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug 2018 at 19:36
Originally posted by Mike H Mike H wrote:



The CB was posher 'sporty version' with leccy start and (lots) more chrome. A work mate had one.


And twin carbs Wink
Nigel
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Jerry atric View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jerry atric Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug 2018 at 21:01
First off, many thanks to all of you for your knowledge. Ian, I watched the youtube video, He was a lucky guy. I remember the rectifier packing up on my CB175 in 1977 when it was only 4 years old, they never had a good reputation.
That wiring diagram is probably USA as I don't think we had the CL, but it's basically the same. I agree, there's no point in buying an old rectifier off ebay and David Silver, the Honda specialist only sells new versions of them but V. expensive.
I think what Motty has fitted to his RD. is going to be the answer.
Your answers have convinced me that there was no regulator fitted to my model, I cannot find any wires for one either.

This forum is great

I don't think the CB is any faster than the CD which seems odd, but it certainly is a much nicer bike to look at. Of course when all that chrome is over 40 years old, its not so nice!
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug 2018 at 21:27
No, there is no regulator fitted. The headlight switch adds the extra alternator coil to the system.

It's a straightforward bridge rectifier. If Maplin were still around, a couple of ££.

But one of these would work fine, best put on a heat sink of some sort though.

Not too expensive I hope. Wink
Brian.

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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug 2018 at 22:00
If you're quick, this one is cheaper. Might even avoid breaking open the piggy bank.

Brian.

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Jerry atric View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jerry atric Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug 2018 at 22:13
Arrgh. Those are so cheap but where do the wires go? The ebay bloke is charging £18 but it does include a finned body casting and a loom and matching connector for numpties. (me) Would I be safer just doing that? I think the David Silver replacement was £70 odd!
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iansoady View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iansoady Quote  Post ReplyReply Direct Link To This Post Posted: 19 Aug 2018 at 10:17

Very knowledgeable and sells reg / recs at a decent price.
Ian
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Jerry atric View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jerry atric Quote  Post ReplyReply Direct Link To This Post Posted: 19 Aug 2018 at 10:58
Originally posted by iansoady iansoady wrote:


Very knowledgeable and sells reg / recs at a decent price.

Thanks for that, good site.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 19 Aug 2018 at 14:35
Originally posted by Jerry atric Jerry atric wrote:

Arrgh. Those are so cheap but where do the wires go? The ebay bloke is charging £18 but it does include a finned body casting and a loom and matching connector for numpties. (me) Would I be safer just doing that? I think the David Silver replacement was £70 odd!


This is the problem, shell out for a kosher plug-n-play one, or have to make up your own bit of harness plus connector plug.

Unless you just happen to have the right coloured wires and suitable connector lying around, that's a few more £££.

As for where the wires go, I would need a multimeter with diode test function to be sure. The single blade at right angles to the others denotes orientation, I might make a guess (just a guess) it denotes positive (output to battery), and diagonaly opposite (again a guess, but based on what I typically find with other similar rectifiers) might be negative (ground).

I'd further guess they're compatible with 6.3mm push-on blade connectors. Which will also need insulators.

HTH

"Chicken nuggets don't dance on a Tuesday."
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 19 Aug 2018 at 15:00
The colour of the wires won't stop it working.
They are standard 1/4 inch spade connectors, and you buy the crimp type with insulators already fitted.
They are marked ~ for ac and + & - for dc, so very simple to connect.
Brian.

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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 2018 at 14:04
Oh yeah, for some reason didn't see the markings.

I don't like those connectors, after having some uninspiring experiences with them, so personal preferance is the uninsulated connectors followed by push on insulators. But in either case the proper crimping tool is preferable.

"Chicken nuggets don't dance on a Tuesday."
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 2018 at 15:22
I agree, they are not the best, but in this case the current involved is minimal so they ought to suffice.
Brian.

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