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Old 03-28-2012, 03:08 AM   #1
MaraBiker OP
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). Does anyone recognizes this Boyer Bransen ignition

I found this used Boyer electronic ignition that was strip off from R60/7 (same as mine). Does anyone recognizes this series, because this ignition is some different from the one on Motobins. I presume it may be quite old. I have already send inquiry for additional information to the seller.

http://www.ebay.com/itm/170811837235...84.m1438.l2649
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Old 03-28-2012, 04:01 AM   #2
PaulRS
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Old, very old.
Probably one of the first BB sets.

I used them once, didn't like it.

P.S. Seller states; Die Teile sind teilweise 35 Jahre alt und gebraucht!

35 year old, used parts.

Paul.
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Old 03-28-2012, 04:47 AM   #3
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Thanks for info.
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Old 03-28-2012, 10:20 AM   #4
chasbmw
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its an old basic BB ignition, I would assume that the big box in the photo is a pair of coils with the police equipment radio interference reducing cover, but thats a bit of a guess.

I used lots of Boyers and liked them, and fitted one to my R80 about 33 years ago, but I would not expect one that old to be working properly.

Charles
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Old 03-28-2012, 12:21 PM   #5
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I had the identical Boyer system in my R90/6 from about 1988 until 2005 and it lived up to it's reputation 100%.

It worked perfectly, good starting down to less than 20deg, and it cured the engines pinging with regular gas. In fact, I ended up selling it to another Airhead and I presume that it's still working.

Great system.
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Old 03-28-2012, 12:35 PM   #6
Kai Ju
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I just installed one on my '77 R100/7.
Engine runs great but became a little hard to start in lower temps, i.e. 40's F, until I slightly retarded the timing.

pm me for a PDF of the installation instructions I got from BB if you go ahead and buy it.
They tell you to route the ground wire down into the front cover through the diode board grommet. I curled my harness up on the left side, in front of the left coil and used the coil mount bolt as the ground. The same one that BMW uses, btw.
Mounted the box to the rear of the coils against the frame with a rubber block and beefy zip tie.

Looks like all the parts are there, but I don't know what the bigger box is for. Caveat emptor, since it also says: Laufleisting unbekannt, which means that the seller doesn't know whether it actually works...........

Kai Ju screwed with this post 03-28-2012 at 01:04 PM
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Old 03-28-2012, 02:22 PM   #7
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Quote:
Originally Posted by Kai Ju View Post
I just installed one on my '77 R100/7.
Engine runs great but became a little hard to start in lower temps, i.e. 40's F, until I slightly retarded the timing.

pm me for a PDF of the installation instructions I got from BB if you go ahead and buy it.
They tell you to route the ground wire down into the front cover through the diode board grommet. I curled my harness up on the left side, in front of the left coil and used the coil mount bolt as the ground. The same one that BMW uses, btw.
Mounted the box to the rear of the coils against the frame with a rubber block and beefy zip tie.

Looks like all the parts are there, but I don't know what the bigger box is for. Caveat emptor, since it also says: Laufleisting unbekannt, which means that the seller doesn't know whether it actually works...........
I'll keep an eye on this. But I think that I am going for the new one from Motobins. New=I know it's works.
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Old 03-28-2012, 07:18 PM   #8
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Why go to Great Britain for a Boyer? Many vendors in the states sell them.
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Old 03-28-2012, 11:48 PM   #9
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Quote:
Originally Posted by bmwrench View Post
Why go to Great Britain for a Boyer? Many vendors in the states sell them.
Shipping cost.
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Old 03-29-2012, 01:26 AM   #10
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Quote:
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Shipping cost.
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Old 03-29-2012, 02:57 PM   #11
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Why go to Great Britain for a Boyer? Many vendors in the states sell them.

'cos the buyer is in Herzegovina?
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Old 03-29-2012, 05:53 PM   #12
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'cos the buyer is in Herzegovina?
Whoops.
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Old 03-30-2012, 01:24 AM   #13
chasbmw
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Mara,

If you go for the microdigital, remember to fit 5000 ohm resistance plug caps as made by NGK.

The earthing of boyers is fairly critical. Boyers used to use the coil earth, but the later instructions are to use the (removed) condensor attachment point. I would follow the instructions!

Charles
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Old 03-30-2012, 11:22 AM   #14
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Yes, I live far far away
And chasbmw thanks for the info.
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Old 03-30-2012, 12:47 PM   #15
Kai Ju
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Quote:
Originally Posted by chasbmw View Post
Mara,

If you go for the microdigital, remember to fit 5000 ohm resistance plug caps as made by NGK.

The earthing of boyers is fairly critical. Boyers used to use the coil earth, but the later instructions are to use the (removed) condensor attachment point. I would follow the instructions!

Charles
Can you speak from a bad experience using the coil/frame ground ? I went that route because the grommet to get through to the condensor mount was so hard that I couldn't get the wire through it. That's when I started looking for an alternate ground.

So far so good.
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