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Triumph Forum: Triumph Rat Motorcycle Forums

Triumph Forum: Triumph Rat Motorcycle Forums (http://www.triumphrat.net/forum.php)
-   Classic, Vintage & Veteran (http://www.triumphrat.net/classic-vintage-and-veteran/)
-   -   Magneto Woes.... (http://www.triumphrat.net/classic-vintage-and-veteran/101159-magneto-woes.html)

Greaser 01-09-2009 01:12 AM

Magneto Woes....
 
So....do I package up my K2F and ship it off to England for refurbishing?



Or.....do I drop the bucks down on a new Joe Hunt unit?

The bike runs, but not vey well at anyting over 25C. Considering where I live, that would mean crummy running and short trips from mid May to end of September. :(

pre unit Thruxton 01-09-2009 05:04 AM

Surely there must be through the classic clubs be someone who does rebuild locally. I know here in New Zealand there are people and they get completely rewired armatures from Australia. I think search around a little. I have recently had mine rebuilt completely and it almost cost my arm and the leg with two nuts on.

One thing is sure make very sure whoever works on it is trustworthy and know what that are doing.

The first time round was done elsewhere, second time was locally, and when it was striped I could see why I always battle to start it.

sam-buca 01-09-2009 11:10 AM

Try Doug Wood in PA. He's an electrical engineer, a rider with numerous britbikes, and very experienced with rebuilding mags.

Greaser 01-09-2009 12:58 PM

Quote:

Originally Posted by bushybester (Post 1180081)
Surely there must be through the classic clubs be someone who does rebuild locally. I know here in New Zealand there are people and they get completely rewired armatures from Australia. I think search around a little. I have recently had mine rebuilt completely and it almost cost my arm and the leg with two nuts on.

One thing is sure make very sure whoever works on it is trustworthy and know what that are doing.

The first time round was done elsewhere, second time was locally, and when it was striped I could see why I always battle to start it.

I thought the mag had a good gong over by a local guy, but turns out he didn't really do much. TO ship back and forth to the UK from Canada is not a big deal as most of my Norton parts came from there anyways. I found it was actually less money and faster, if you can believe that. I LIKE that SRM offers a 2 year warranty, and I know the job will be done to a high standard. Also, shipping rate tot he UK are not much more than shipping into the USA. Why that is I have no idea.....

pre unit Thruxton 01-09-2009 02:31 PM

Hey Greaser, off which bike is the mag and what is the voltage of the bike?

I believe a good test is to use a good second hand plug and break off the outer plug gap adjustor, when spinning the mag by hand there should be a strong blue spark that can arc to the side of the plug

Greaser 01-09-2009 05:13 PM

Quote:

Originally Posted by bushybester (Post 1180245)
Hey Greaser, off which bike is the mag and what is the voltage of the bike?

I believe a good test is to use a good second hand plug and break off the outer plug gap adjustor, when spinning the mag by hand there should be a strong blue spark that can arc to the side of the plug

It is on my 58 Norton. I am 99.9999% sure it is the condenser inside. It is OK when it is cool outside, but once it gets to 25C or so and above, it gets hard to start (sometimes it won't!) and misfires under load. Also, it always seem to want more advance even though the timing is spot on I've checked it a dozen times with my degree wheel. As far as I know, the mag has not been part since our family has owned the bike, which would 40 years this summer.

I bodged the mag up with an external automotive capacitor just to ride it through September and October but I need a more permanent solution.

McQueen 01-09-2009 07:17 PM

Quote:

Originally Posted by Greaser (Post 1180205)
Also, shipping rate tot he UK are not much more than shipping into the USA. Why that is I have no idea.....

The Queen's discount?

pre unit Thruxton 01-09-2009 08:49 PM

What is the voltage ??????????????? 6 or 12 volt. Have you checked the spark?

Greaser 01-09-2009 09:01 PM

Quote:

Originally Posted by bushybester (Post 1180440)
What is the voltage ??????????????? 6 or 12 volt. Have you checked the spark?

Voltage? It is irrelevant. Mag's are not connected to the wiring circuit.
All signs point to a faulty condenser.

pre unit Thruxton 01-09-2009 09:29 PM

Quote:

Originally Posted by Greaser (Post 1180445)
Voltage? It is irrelevant. Mag's are not connected to the wiring circuit.
All signs point to a faulty condenser.

Well then replace the freaking condenser, YOU OBVIOUSLY HAVE ALL THE ANSWERS.

Well that depends, I understand that my bike is 6 volt making it difficult to replace the mag and dynamo with a new modern replacement and that, is what I am trying to get across. As that may be a better option. Well carry on then.


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