Author Topic: Vintage Honda Tester SRH500 Kowa Seiki Ltd  (Read 1216 times)

Offline CB5501977K3

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Vintage Honda Tester SRH500 Kowa Seiki Ltd
« on: January 14, 2020, 08:29:56 PM »
My mate came around today to test condensers on my CB550.
He brought his 1970's Honda Motor tester with him which seemed to work and measured the capacitances at 24 micro farad and tested resistance which was slightly deficient on both caps.

I have not seen a tester like this before and thought the forum may find it of interest. It comes with a series of cards; shown is one for some test on a CB750/550.

Sorry but I can't answer any tech questions on it..........

Chris

Offline Trigger

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #1 on: January 14, 2020, 09:59:14 PM »
I had one of them in my old workshop, I never knew how to use it but, I know my manager used to use it. Some kind of early multi meter.

Offline Bryanj

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #2 on: January 14, 2020, 10:15:13 PM »
Meads had one of those as well, used it maybe fortnightly

Offline Oddjob

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #3 on: January 15, 2020, 12:40:43 AM »
Yeah I've used one of those. Never really got the hang of some of it's abilities, I seem to recall we used to charge condensers on it and chucking them at the apprentices shouting "catch" as soon as they got the body and the spade connector together it would discharge giving them a belt. Sad I know but those were the times we lived in back then. Never get away with it these days.
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Offline SteveD CB500K0

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #4 on: January 15, 2020, 07:04:43 AM »
Never seen one before. I wonder how they work.

Measuring capacitance is tricky.


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Offline AshimotoK0

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #5 on: January 15, 2020, 07:47:08 AM »


Nice vintage bit of kit. A lot of cheapo multi-meters now have a capacitance range on them now.
“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 Bryanj

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #6 on: January 15, 2020, 08:32:22 AM »
Bit i used most was the coil tester on th RH  side, i think biggest gap i got was 9mm

Offline CB5501977K3

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #7 on: January 15, 2020, 08:55:21 AM »
Correction re measurement - it should read 0.24 microfarads, not 24!

Offline AshimotoK0

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #8 on: January 15, 2020, 09:52:30 AM »
Correction re measurement - it should read 0.24 microfarads, not 24!

Ha ha .. I spotted that ..posted it should be micro-farad and then when I re-read it it said micro. so I edited it.

I wonder if the Honda tester applies a high voltage to make the capacitance measurement, which a modern multi-meter would not. The high voltage test would be better because it would test at the typical voltage generated by the back EMF produced by the ignition coil primary, when the points open.
“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 SteveD CB500K0

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #9 on: January 15, 2020, 10:13:05 AM »
The high voltage test would be better because it would test at the typical voltage generated by the back EMF produced by the ignition coil primary

Told you measuring capacitors was tricky

When I was a design engineer in the 80s, we used 1 Farad “capacitors” in our short term battery backup systems. They were probably small rechargeable batteries inside but they surface mounted on the pcb and were very rugged so we didn’t care …



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Offline MCTID

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #10 on: January 15, 2020, 12:52:12 PM »
Hi CB5501977K3 (Member who started this post) could you get your mate to describe what this bit of kit can do, and how it does it....I'm sure lots of the 'Techies' on this Forum would find it of great interest. (it would be like Chinese writing for me I'm afraid.........but as Dirty Harry used to say in that movie, 'A man's gotta know his limitations'). LOL.
Now: CB750K4. 1970 Bonneville. 1979 Suzuki GS750E. Various other 1960's 650 Triumph T120's/ TR6's/ TR6C's. Previous: CB1300 (2). ZXR1200S. VFR800. CB750 Nighthawk. CX500. XS500 Yam. Suzuki GT500. BSA A10. Various Lambrettas. Zundapp Bella (honest).

Offline CB5501977K3

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #11 on: January 15, 2020, 07:05:33 PM »
Hi MCTID
It had several cards (I have shown one) and they give instructions or a procedure and which test leads to use to connect to which part of the bike.
I don't think he would know how it's testing it but he seemed to be pretty competent doing my caps.
I know it did ignition coils and had a dated strobe light with it for doing dynamic timing (we didn't use that).
He did tell me in the mid 70's  if your motorcycle workshop wanted to become a "Five Star" agent you had to have certain test gear and Honda tools. Perhaps this was part of the kit you needed at the time?

Chris

Offline Bryanj

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #12 on: January 15, 2020, 09:59:00 PM »
Yes it was part of the kit you had to have, along with vac gauges and specific model tools

Offline AshimotoK0

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #13 on: January 16, 2020, 08:19:49 AM »
Then they went to the Service Testers like the one in the background here with an integrated oscilloscope.
Think these were made by Sourei or some name sounding like that. Pretty sure my mate in York has one similar that he got from a closed down dealers that he wanted me to get up and running a while ago.


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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 Oddjob

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Re: Vintage Honda Tester SRH500 Kowa Seiki Ltd
« Reply #14 on: January 16, 2020, 10:07:34 AM »
We had that one as well. AFAIK not a single mechanic could operate it except maybe Steve the workshop foreman.
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