is original contact breaker assembly available? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 9 (permalink) Old 11-05-2012, 01:09 AM Thread Starter
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is original contact breaker assembly available?

wondering if anyone still sells the original points assembly complete? my 66' 650 parts manual calls out for "Contact breaker type 4CA"

thanks, Rick
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post #2 of 9 (permalink) Old 11-05-2012, 04:37 AM
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if you mean original, as in a copy, then yes.
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post #3 of 9 (permalink) Old 11-05-2012, 07:53 AM
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Originally Posted by DAVE M View Post
if you mean original, as in a copy, then yes.
where?
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post #4 of 9 (permalink) Old 11-05-2012, 08:00 AM
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post #5 of 9 (permalink) Old 11-05-2012, 12:29 PM
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thanks . british cycle are out of 54425160 Thanks Charlie
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post #6 of 9 (permalink) Old 11-05-2012, 12:33 PM
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Originally Posted by razman View Post
wondering if anyone still sells the original points assembly complete? my 66' 650 parts manual calls out for "Contact breaker type 4CA"

thanks, Rick
I Have good used ones . Points and condenser on plate Charlie 585 589 0763 email akey42000@yahoo.com
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post #7 of 9 (permalink) Old 11-05-2012, 12:35 PM
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Unless you are doing a by the book the restoration, I believe the 6ca might be a better option. The point sets are easier to adjust because of independent mounting, but you would have to mount condensers somewhere. Given the amount of bikes converted to EI, I would think you could find a used set somewhere. You would also need the auto advance unit.

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post #8 of 9 (permalink) Old 11-05-2012, 01:56 PM
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Check out Baxter Cycles in Iowa. (www.baxtercycle.com) They've given me pretty good service. When I call in an order, I usually have it in 2-3 days.
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post #9 of 9 (permalink) Old 11-05-2012, 06:28 PM
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The 4CA breaker plate is rubbish,and should be replaced by the 6CA or 8CA breaker plate.The later plates have independent timing adjustment,and condensors mounted near the coils instead of under the points cover and integral with the points.

The only way to get accurate timing with 4CA is by making one points gap bigger or smaller than spec.

6CA,8CA use different points,but are basically the same.The points changed about '73.
It's a very good ides to also use the 6CA AAU,which has a cam with 160 degrees dwell.The different cam can prevent melted pistons;even if the timing is right.
If the cam looks as though the points close for almost as many degrees as they open,you have the correct better AAU.

Last edited by Mr.Pete; 11-05-2012 at 06:38 PM. Reason: '73,not '71
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