Z250 B1

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Re: Z250 B1

08 Sep 2026 17:36
#927382
What are peoples opinion on mirrors? You guys prefer oem or visibility? 

I've noticed my bike has rectangular mirrors. While they seem to be era correct, i think the oem ones are circular (black/chrome)?

being larger, the current ones are probably safer, in theory. But they certainly change the look of the bike.

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Re: Z250 B1

10 Sep 2026 04:57
#927406
Can you believe this thing is still using its original condenser. There's oem and aftermarket options at a premium. 

or this is an option. Will get one and fit it tomorrow. 

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Re: Z250 B1

10 Sep 2026 05:41
#927408
   Is the OEM condenser rated as 22 nF  (nanofarad)?  That seems out of range by an order of approximately 10.  Every points condenser we've ever seen is in the range of 0.24 µF (microfarad).

   An ignition condenser can be tested easily with a DMM that has a capacitance test setting.

  Assuming the condenser & points are on the motor somewhere, is that capacitor rated for operating temps in the points housing?

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Re: Z250 B1

10 Sep 2026 22:56 - 10 Sep 2026 22:57
#927425
Thanks for confirming the value. I wasn't sure if 22 was right.

220nf is same as .22uf

my original fears were true. Capacitance is ok, but 630v isnt enough. I imaging the oem caps are rated something crazy like 1000v+

Perhaps if I switched to electronic ignition 630v would be enough because no points?

But,thats an adventure for another day 
Last edit: 10 Sep 2026 22:57 by z250b1.

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Re: Z250 B1

10 Sep 2026 23:49
#927428
630v ???? where ???? system voltage is 12v and HT output is approx 15kv

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Re: Z250 B1

11 Sep 2026 03:06
#927434
Thanks for confirming the value. I wasn't sure if 22 was right.

220nf is same as .22uf

my original fears were true. Capacitance is ok, but 630v isnt enough. I imaging the oem caps are rated something crazy like 1000v+

Perhaps if I switched to electronic ignition 630v would be enough because no points?

But,thats an adventure for another day 
 
  Yep, you're right.  That trailing zero didn't register for some reason.  220nF is same as 0.22µF. 

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1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk
2009 ST1300A

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Re: Z250 B1

11 Sep 2026 04:22 - 11 Sep 2026 04:24
#927438
Where indeed.

For what its worth it found this...

"...capacitor secs are 0.24 +- 0.02 ufd, 1,000W VDC.

So yeah. 630v was way out of the ballpark.

Last edit: 11 Sep 2026 04:24 by z250b1.
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