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Author Topic: CX500 CDI  (Read 1917 times)

Offline AshimotoK0

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Re: CX500 CDI
« Reply #15 on: August 21, 2017, 04:30:06 PM »
Took the Cdi Box off this morning Rich and I cleaned your carbs last night ... No floats though? Hope I have not lost 'em.

Found this .... Wow !!  just up my street !

http://www.cx500.50webs.com/
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Offline hairygit

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Re: CX500 CDI
« Reply #16 on: August 21, 2017, 04:36:30 PM »
Looking at the spec sheet for that page you linked to, why not make one with higher rated resistors, ie. full 1 watt resistors instead of 1/2 watt or 1/4 watt, if space permits it should make it almost bullet proof. After all, that's the only difference between supermarket brand TVs and big name ones!
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Offline RGP750

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Re: CX500 CDI
« Reply #17 on: August 21, 2017, 06:21:47 PM »
Crikey Ash is that French or German ; :oD ;D ;D
Rich
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Offline AshimotoK0

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Re: CX500 CDI
« Reply #18 on: August 21, 2017, 06:44:00 PM »
Quote from: RGP750 on August 21, 2017, 06:21:47 PM
Crikey Ash is that French or German ; :oD ;D ;D
Rich

It's  basically the same as the one I made for my 1st 400/4 in 1977 but I had a step up inverter from 12>400 volts (no HT winding  on Honda Alternators back then, 1st was either Superdream or CX dunno which )  and retained the points to 'Trigger'  :D it. As mentioned in another post earlier  today I wonder if that bike still has it on, as it's still about on DVLA,   SORN'ed  ( XDN 128R ). The Kwak H1 had the same system as I built for the 400F (i.e inverter driven) but with inductive pickups to trigger the CDi
« Last Edit: August 21, 2017, 06:46:45 PM by AshimotoK0 »
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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 RGP750

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Re: CX500 CDI
« Reply #19 on: August 21, 2017, 08:03:11 PM »
sounds ruddy clever to me Ash ::)
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Offline AshimotoK0

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Re: CX500 CDI
« Reply #20 on: August 22, 2017, 12:46:39 AM »
Quote from: RGP750 on August 21, 2017, 08:03:11 PM
sounds ruddy clever to me Ash ::)

It's not rocket science Rich. You basically charge a capacitor up to 300-400volts and a semiconductor switches that voltage across a 12v coil to produce a nice fat spark at spark gap across the secondary coil
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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 RGP750

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Re: CX500 CDI
« Reply #21 on: August 22, 2017, 06:43:58 AM »
If you can understand it  and "electrisicol" ( Who is old enough to remember who used to say that) is something i cant get my head around.
A bit like me saying just core the undercut there and split the pattern there in a v8 cylinder head.
each to their own (or am i just thick :-[)   :D :D
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Offline AshimotoK0

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Re: CX500 CDI
« Reply #22 on: August 22, 2017, 07:02:02 AM »
Quote from: RGP750 on August 22, 2017, 06:43:58 AM
If you can understand it  and "electrisicol" ( Who is old enough to remember who used to say that) is something i cant get my head around.
A bit like me saying just core the undercut there and split the pattern there in a v8 cylinder head.
each to their own (or am i just thick :-[)   :D :D

I used to work with 5 patternmakers at one time Rich so I kinda know what that means ...sad innit  ...  .... BTW everyone knows you're a genius  :) :)  It's those rulers I told you about that patternmakers use that have non-standard scales that do my head in.
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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 RGP750

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Re: CX500 CDI
« Reply #23 on: August 23, 2017, 05:57:18 PM »
CDI update. I bought a CDI yesterday on ebay (as they appear to be hens teeth). The guy i get it from seems to be pretty clued up on these things and electrics in general and has been really helpfull .
He sent me this link and may well be usefull to CX owners on here .
I have done the relevant tests as on the website and all seems to be ok with the Stator .
https://motofaction.org/motorcycles/honda-cx-gl/
So it the CDI checks out tomorrow i will need to look somewhere else for the problem.
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Offline AshimotoK0

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Re: CX500 CDI
« Reply #24 on: August 24, 2017, 03:53:04 PM »
Quote from: RGP750 on August 23, 2017, 05:57:18 PM
CDI update. I bought a CDI yesterday on ebay (as they appear to be hens teeth). The guy i get it from seems to be pretty clued up on these things and electrics in general and has been really helpfull .
He sent me this link and may well be usefull to CX owners on here .
I have done the relevant tests as on the website and all seems to be ok with the Stator .
https://motofaction.org/motorcycles/honda-cx-gl/
So it the CDI checks out tomorrow i will need to look somewhere else for the problem.

Says it's fuly funcional :-- https://www.ebay-kleinanzeigen.de/s-anzeige/cdi-fuer-honda-cx500-und-500c/705094751-305-3304
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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: CX500 CDI
« Reply #25 on: September 06, 2017, 07:26:41 PM »
Any update rich
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Offline RGP750

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Re: CX500 CDI
« Reply #26 on: September 07, 2017, 08:43:14 PM »
Sorry for late reply Woodside no internet or phone, a car demolished the
 green phone connection box at the end of our drive and was dragged away by a fellow 'person of the road' shall we say.
Ash has sent me his cdi and Carbs and problem solved (i hope) Ash's carbs have solved the problem but what is wrong with mine i can't see.
I'm watching some carbs on Ebay and may go for them and cross my fingers they are ok .
It's the left one playing up.
Thanks for your offer of help , watch this space
Cheers Guys
Rich
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Offline Trigger

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Re: CX500 CDI
« Reply #27 on: September 08, 2017, 01:45:32 PM »
Change the right air cut off diaphragm with the left one ;) And see if that makes and changes.
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Offline RGP750

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Re: CX500 CDI
« Reply #28 on: September 08, 2017, 04:02:06 PM »
I have fitted a new one to the left carb already Trigg ;)
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Offline Trigger

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Re: CX500 CDI
« Reply #29 on: September 08, 2017, 05:57:09 PM »
Quote from: RGP750 on September 08, 2017, 04:02:06 PM
I have fitted a new one to the left carb already Trigg ;)

Are you sure the new one is not faulty or is sealing right  ;)
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