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Post by wayne on Oct 8, 2020 23:58:53 GMT -5
Board member GRANT has recently repaired and upgraded my CDI unit. He's a qualified electrical engineer.
To expand his RE5 engine rebuilding service, GRANT is now offering to repair RE5 CDI's.
He is located in Brisbane, Australia.
Contact him through the board by Private Message to GRANT.
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Post by rotarym on Dec 22, 2020 14:28:12 GMT -5
Hi Wayne My A model cdi can be heard a mile away but the M you can hardly hear but runs OK. Is this worth to get it looked at or is that normal or signs it is getting tired. Kerry
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Post by janski on Dec 23, 2020 6:39:51 GMT -5
Love a drop of Australian wine. The whistle or whine emitted from this 1970's CDI unit is mainly caused by the high frequency "chopper" circuit converting 12 volts to about 300 volts, the windings in this part of the circuit would be the main culprit. A "whining" CDI unit does not mean it will be a working unit, just an indication that it may be developing that 300 volts. There is a diagram somewhere on this site, and much discussion about this item, and it's replacement with more up to date products. Luckily I have been able to repair my own units, two of which had different remedies than described on this board (mentioned in a previous reply). Differing "whine" output could be build quality, maybe the amount of potting compound or lack of. I would like to also say Merry Xmas to all, and a normal New Year.
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Post by wayne on Dec 23, 2020 17:25:36 GMT -5
Thank you. Had a feeling someone would know the specifics.
Have a glass for me JANSKI and enjoy a Merry Christmas.
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Post by janski on Dec 23, 2020 18:41:19 GMT -5
Thank you Wayne, might manage at least two, all the best.
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