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Vintage Technical Tips & Tricks Technical and maintenance tips and links. DO NOT POST YOUR QUESTIONS HERE!! Please post questions to the general forum.

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Old 04-29-2011, 09:57 AM   #1 (permalink)
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76 t140 ignition question

ok heres my question. i have 76 t140 with with a boyer electronic ignition. i was told this type has a waste spark and a stock alternator wont put out a enough current to charge the battery while its running with this type of setup. so you are running off of the battery during operation. i have noticed that the battery is drained after riding it. would i be better off to go back to a points type ignition or buy a higher output alternator? i want something reliable. has anybodyelse experienced this problem?
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Old 04-29-2011, 12:38 PM   #2 (permalink)
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Quote:
Originally Posted by outlawji View Post
ok heres my question. i have 76 t140 with with a boyer electronic ignition. i was told this type has a waste spark and a stock alternator wont put out a enough current to charge the battery while its running with this type of setup. so you are running off of the battery during operation. i have noticed that the battery is drained after riding it. would i be better off to go back to a points type ignition or buy a higher output alternator? i want something reliable. has anybodyelse experienced this problem?
Where did you get your information from about the Boyer using so much current? The maximum for the Boyer is 5amps and is dependent on the coils used. Do you have 12v or 6v coils? What type charging system regulation do you have? How old is your battery and what type is it? Do you have a halogen headlight? Do you ride a lot below 2100 rpm? Bob

Last edited by coloradobob; 04-29-2011 at 12:57 PM.
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Old 04-30-2011, 01:41 PM   #3 (permalink)
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There should be no problem running a Boyer on your bike. The fact it is wasted spark is irrelevant.
However, Boyer systems like to have a fully charged battery to run at their best maybe that is what you were told...
IF your battery is going flat then maybe your alternator is not putting out enough charge
OR
your battery is faulty (most likely)
OR
severla other things possibly.
Like Bob says we need a bit more information.
Adam.
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Old 05-02-2011, 07:36 AM   #4 (permalink)
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thanks for the replies. i have just put a new battery in the bike friday. a B9B i think from parts unlimited. im assuming the bikes coils and regulator are all stock but i will check. this is my first foray into this lovely world of triumph so bare with me lol
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Old 05-03-2011, 04:20 AM   #5 (permalink)
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For best results, you should have 2 x 6 volt coils wired in series.
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