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Well Well more trouble...
Today I received a brand new carb a 376 with original spec.
I mounted the carb and fired it up without aircleaner.

Drove it 1 / 8 of a mile 200 m only it spitted/misfired as before.
but idled ok so I let it go on idle for a couple minutes to see if it become worse when hot.
it was dark out side and suddenly i looked down to see the left exhaust pipe and it was glowing red.. Right side was hot to but not as much.
blimey I shot it off right away and left it to cool down. after I noticed that the plugs looked fine.

I wonder what could have caused it. well when it misfired i noticed exhaust flames in the real mufflers.
I'm all ears for comments....

Last edited by Morgan; 11/12/14 4:20 pm.

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Have we already had ignition timing and Manual or automatic advance on this thread?

It's worth mentioning that AMAL put swarf into the new carburettors that they sell.


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I have automatic advance, Hey I'm Swedish what is Swarf? I took the new carb apart and blowed it clean with air pressure .
Quote
swarf

Last edited by Morgan; 11/12/14 5:41 pm.

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Originally Posted by Morgan
I have automatic advance, Hey I'm Swedish what is Swarf? I took the new carb apart and blowed it clean with air pressure .
Quote
swarf


<http://en.wiktionary.org/wiki/swarf>

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I'm very late to this thread, but I'm completely sure from the behavior of the points that it is a bad capacitor. The OK-when-cold, bad-when-hot symptoms only apply to the original Lucas condensers. Inappropriate modern ones typically have different symptoms. But, sparking across the points is a signature common to bad ones of all types.

No matter what the armature has to come out, which reduces the magnetization (despite nonsense to the contrary written by certain suppliers). Someone with an appropriate magnetizer, built with the finest of Swedish magnet iron (seriously), will have to remagnetize it.

Inappropriately spec'd modern capacitors have been the bane of motorcyclists for several decades. Don't be the next victim (actually, since your failed condenser was installed by a professional rebuilder, you're already a victim). Read my recommendation in the following post; use anything other than this at your own peril:

http://www.britbike.com/forums/ubbthreads.php?ubb=showflat&Number=508762#Post508762

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I agree that now that you've exhausted the easier/cheaper items it's time to get the mag fixed.

I do not, however, agree that getting the field magnets remagnetized simply because of dissassembly is necessary for an A10...particularly a Golden Flash. Sure it may not be a optimized but it seems when everything else is in good nick an A10 is a very easy starter with a K2F that's been apart without remagnetizing. Even one that's been apart about a dozen times with at least one stretch of the armature being removed for weeks.


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Hej Morgan
I am quite sure you will have lots of fun with the A 10 when you get rid of the issues. Did you caught fire when you drove my Dark Star last year???
Anyway...are you sure about equal compression on both cylinders?
tappets set right? tried some new plugs? (dont trust NGK, Bosch or anything else than N3 Champions)
A10 twins can work like a clock, when putting together senseful.
Dont trust somebody elses work too much, always check and double check it.
Have fun with it.
Cheers Dieter

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Originally Posted by Alex
... A10 is a very easy starter with a K2F that's been apart without remagnetizing. Even one that's been apart about a dozen times with at least one stretch of the armature being removed for weeks.
The loss in magnetization all (or essentially all) happens on the first removal of the armature after magnetization. From then on subsequent removals, or letting it sit for months with the armature outside, doesn't further weaken the field. However, a low compression engine doesn't need full strength to start OK. So, you're right, high quality Swedish magnet iron isn't essential for a Golden Flash.

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So I have a few options here.

1 remove the K2f and send it off for examination and restoration to someone I hope I can trust.
2 buy a restored K2F from someone I hope I can trust.. wink

we do have a guy here not far away I think i'll ask him what the price is for one and how his has been restored buy the guy he has a deal with in UK.

What about the GLOWING RED PIPE I HAD YESTERDAY any thoughts on that?

Expresidente, no I have not checked the valves/rods etc or the timing I need to learn how to. Have not been doing anything on a BSA twin ever before.. However I had fun riding your stiff dark star.. wink


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About the swarf.. it looks ok on the slipring.


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Glowing pipe usually means lean. Could also be timing though.


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Possible airleak after mounting new carb???


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I realize it's probably cost prohibitive due to shipping costs but I have had several mags and a generator done by Doug Wood with excellent results. He's in Pennsylvania, USA.


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I'm sorry I hadn't noticed this thread earlier but it was started when I was still in Qatar. But, had I read it earlier I would have pointed to the diagnosis of your problem that is given elsewhere on this forum, where it says:

Obvious sparking at the contact breaker points is the "smoking gun" of a faulty condenser.

You can find that at:

http://www.britbike.com/forums/ubbthreads.php?ubb=showflat&Number=466579#Post466579

Originally Posted by Morgan
So I have a few options here.

1 ... send it off for examination and restoration to someone I hope I can trust.
2 ...from someone I hope I can trust.
Before you proceed I strongly suggest you read the information in:

http://www.britbike.com/forums/ubbthreads.php?ubb=showflat&Number=464907#Post464907

It was written for someone in exactly your position. But, it does no good whatever to post this stuff if it goes unread...

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Well I have not done anything yet really I took timing cover apart and it looked fine inside. ATD might be a bit slack in the springs but that only makes it easier to hit high timing, a friend i coming over on monday eve and will connect a strobe to see if the plug cable misses a beat/spark. Might also remove that tank so I can see if the BTDC setting is correct.

Will also change plug cables and cap.

It does idles but misfires/spit back as son as I start to rev.
I see blue flames spitting back occasionally and its sounds misfiring in the exhaust.

After monday eve I'll see what I'll do next.

Magnetoman is there a light version for us non English language by birth folks?
Just kidding I will try to read and understand it tomorrow.

Last edited by Morgan; 11/15/14 4:32 pm.

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Originally Posted by Morgan
Magnetoman is there a light version for us non English language by birth folks?
No problem, I'll just do what I always do when encountering foreigners, which is TO TALK LOUDER...

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Originally Posted by Magnetoman
Originally Posted by Morgan
Magnetoman is there a light version for us non English language by birth folks?
No problem, I'll just do what I always do when encountering foreigners, which is TO TALK LOUDER...


Morgan's from northern Europe, so don't flap your arms around while you shout at him. That's for Mediterranean types.


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No no Magnetoman you are the foreigner I am typing in a foreign language. grin
Actually my personal concern is that a couple years ago I boiled my brain and nowadays its very tiring to read much text and it does not help much if its technical English..
I'll just read a section, relax and then read next section.
Cheers

Last edited by Morgan; 11/15/14 5:14 pm.

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Originally Posted by Morgan
No no Magnetoman you are the foreigner I am typing in a foreign language.
No, no... oops, I mean, NO, NO, YOU'RE THE FOREIGNER.

I'm an American and we consider everyone else, including a lot of our fellow Americans, to be foreigners.

A couple of years ago I was in a restaurant in Paris where I had communicated my order in badly pronounced French to the waiter. We had enough of a conversation to know that he spoke English better than I spoke French. A little while later two American couples came in and were seated at the table next to me. They went on and on complaining to each other about the French. I had no interest in speaking with them so I just sipped my wine. At one point something they said was so humorously idiotic that I couldn't help but crack a smile. One of them noticed and tried to quietly alert the others that I apparently understood English. The thing is, even while the English-understanding waiter was taking their order (communicated to him by pointing at the menu) they had complained about the French. The point is, even if a Frenchman is in France, to Americans he's an illiterate foreigner. Which is why we SPEAK LOUDLY SO THEY WILL UNDERSTAND.

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Hey
Finally I replaced the anchor with a new condenser, also new points and slipring. new plugs L82C and new cables and plug caps.
Voila it starts and seem to work, Now i need warmer weather so I can test run it a bit longer.
Probably need to adjust the new carb as well.

Oh yes I need the air filter connecting rubber hose and clamp anyone who knows where to one? Probably need the adaptor ring as well as this new carb has threads.


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Neat bike. I hope you really enjoy it. Very nice.


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Woo-hoo! Well done, Morgan.


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Alex I was out riding today with the A10, cold but dry roads and sunny. when I got back there was a gear shifting problem getting off gear. I had this before i serviced the clutch. Never mind I sort this out later on, might still be clutch or gearbox.
However it was fun. a pre-unit twin is so easy to handle compared to the Goldie.

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Morgan, if you can get it out of gear while moving but not when stopped, it's the clutch dragging.

Cheers!


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I'll check that, I know I gave the cable a little slack before i went out maybe that little did it.


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