Author Topic: Anatomy of a CX500 Cdi unit  (Read 829 times)

Offline mike the bike

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Re: Anatomy of a CX500 Cdi unit
« Reply #30 on: November 12, 2017, 09:38:19 PM »
The potting, as previously discussed,  wasn't always 100% which affects the solder joints due to atmospheric exposure and, over time, capacitors go leaky so it was always going be pot luck if a CDI lasts 50k or 500k.  Upgrading with modern capacitors,  metal film resistors etc, and re potting the pcb properly will make the CDI outlast the bike.
Why did I get rid of that one

Offline Oddjob

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Re: Anatomy of a CX500 Cdi unit
« Reply #31 on: November 12, 2017, 11:46:50 PM »
Couldn't have said that better myself Mike, perfect reply.
Don't play stupid with me, I'm better at it

Offline AshimotoK0

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Re: Anatomy of a CX500 Cdi unit
« Reply #32 on: November 13, 2017, 12:38:37 AM »
 ;D ;D ;D ;D ;D

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“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline Woodside

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Re: Anatomy of a CX500 Cdi unit
« Reply #33 on: November 13, 2017, 07:23:14 AM »
as to the potting what will you use to reseal the cdi

Offline AshimotoK0

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Re: Anatomy of a CX500 Cdi unit
« Reply #34 on: November 13, 2017, 01:42:32 PM »
as to the potting what will you use to reseal the cdi

Not sure Jason..possibly silicone dielectric gel. I still need to come up with a test rig setup and enclosure. Engine looking really good though so definitely worth all of the effort.
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline Woodside

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Re: Anatomy of a CX500 Cdi unit
« Reply #35 on: November 13, 2017, 01:55:07 PM »
sound good is it this stuff

http://www.google.co.uk/shopping/product/5009981323735501408?lsf=seller:87981,store:8414587908041704960&prds=oid:5468991119695532258&q=magic+gel&hl=en&ei=kaMJWo_yC-KNgAaW6qCoBw&lsft=gclid:EAIaIQobChMI4NvdoNm71wIVypTtCh2uxQDjEAQYASABEgLCn_D_BwE


anyway we use this and can submerge 230v joints pretty much underwater ...
i took apart an underground joint filled with this after 3 years to add some more circuits and it was as good as new...and it was pretty much in a bog

Offline AshimotoK0

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Re: Anatomy of a CX500 Cdi unit
« Reply #36 on: November 13, 2017, 04:22:27 PM »
sound good is it this stuff

http://www.google.co.uk/shopping/product/5009981323735501408?lsf=seller:87981,store:8414587908041704960&prds=oid:5468991119695532258&q=magic+gel&hl=en&ei=kaMJWo_yC-KNgAaW6qCoBw&lsft=gclid:EAIaIQobChMI4NvdoNm71wIVypTtCh2uxQDjEAQYASABEgLCn_D_BwE


anyway we use this and can submerge 230v joints pretty much underwater ...
i took apart an underground joint filled with this after 3 years to add some more circuits and it was as good as new...and it was pretty much in a bog

Yes similar but the stuff I have used in the past was made by  Dow Corning.
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline Woodside

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Re: Anatomy of a CX500 Cdi unit
« Reply #37 on: December 06, 2017, 01:32:06 PM »
ash im using some
wiska mpgel plus...today
google it if its any good ill try and save some for you

Offline Woodside

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Re: Anatomy of a CX500 Cdi unit
« Reply #38 on: December 06, 2017, 01:32:55 PM »
code on box is
mp01100w

Offline AshimotoK0

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Re: Anatomy of a CX500 Cdi unit
« Reply #39 on: December 06, 2017, 01:42:08 PM »
code on box is
mp01100w

Wow ..cheers Jason
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.