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C77 winkers

Charging System, Wiring, Lighting
jensen
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Location: netherlands, huizen
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Post by jensen » Thu Aug 26, 2010 1:33 am

Hi,

I'm sorry to say, but I make pictures of every thing I'm doing on my bikes, including repairing a CB72 relay. These pictures I made 5 /6 months ago, becuase this flasher had the probably the same problem as your has.

So I didn't do it specially for you, but trowed in the pictures because someone was asking, the pictures were waiting for this kind of question.

btw, my condenser was toast, and didn't hold the juice long enough to hold the relay, that's why is buzzing. The relay is fully functional, but the frequency is "a little" to high to notice. The condenser determines the frequency.

But sometimes the relay part is just dirty and / or the distance between the contacts has changed, that's why you first have to clean it, clean the contacts, and try to re-adjust the distance with the screw in the pictures. This readjusting is done by playing with it, listening to it, becuase I found different distances over different relay's. I think this adjusting was done manually in the factory, becuase the distance is depending on many parameters.

I repair these relay's on a regular basis, sometimes they pop-up on local markets, mostly not functioning. I found that around 50 % of the relay's have a condenser issue, so I hope you're on the lucky side,

But thanks for your compliments, keeps me going,

Jensen
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

Eljeef
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Joined: Thu Jun 25, 2009 11:38 am
Location: Windsor, Ontario

Post by Eljeef » Thu Aug 26, 2010 6:34 am

Whether you took them now or earlier, thank you for posting them.
1964-C77 305 Dream
2002 BMW R1150GS

e3steve
h305 Moderator
Posts: 2601
Joined: Fri Oct 31, 2003 1:38 pm
Location: Mallorca, Spain & Warsash, UK

Post by e3steve » Thu Aug 26, 2010 7:56 am

It seems these flasher cans/winker relays require a ground, therefore not just the simple bi-metal type; please ignore my previous post. Looks like a 'simple', crude electronic type with the capacitor & resistor stabilising the flash rate.

Most electronic winker relays require a ground connection to complete the circuit.

jensen
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Posts: 1143
Joined: Tue Feb 12, 2008 2:51 pm
Location: netherlands, huizen
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Post by jensen » Thu Aug 26, 2010 8:01 am

Hi,

Ground behind condenser seen from condenser.
There are two types, one with two and one with three wires.
Difference between those is the ground via a wire,

Jensen
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

e3steve
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Posts: 2601
Joined: Fri Oct 31, 2003 1:38 pm
Location: Mallorca, Spain & Warsash, UK

Post by e3steve » Thu Aug 26, 2010 8:04 am

jensen wrote:......Difference between those is the ground via a wire,

Jensen
As opposed to the ground via the casing, I guess?

jensen
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Posts: 1143
Joined: Tue Feb 12, 2008 2:51 pm
Location: netherlands, huizen
Contact:

Post by jensen » Thu Aug 26, 2010 8:21 am

Hi steve,

Yes,

Jensen
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

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