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Author Topic: Dohc Cb750f: possibly a valve issue  (Read 1603 times)

Offline datadavid

  • Posts: 1363
Re: Dohc Cb750f: possibly a valve issue
« Reply #40 on: Sep 03, 2018, 07:31:51 »
Didnt tesla prefer high voltage dc?
No, Hippolyte Pixii did in 1832, more than 30 years before Tesla was even born.



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Offline irk miller

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Re: Dohc Cb750f: possibly a valve issue
« Reply #41 on: Sep 03, 2018, 09:42:46 »
Didnt tesla prefer high voltage dc?
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No, Edison did.  In the War of the Currents, Tesla presented AC power and Edison presented DC.  At the time, there wasn't a way to deal with power loss for DC, but Tesla had invented an AC transformer, so AC power won out. 

Offline datadavid

  • Posts: 1363
Re: Dohc Cb750f: possibly a valve issue
« Reply #42 on: Sep 03, 2018, 09:52:31 »
No, Edison did.  In the War of the Currents, Tesla presented AC power and Edison presented DC.  At the time, there wasn't a way to deal with power loss for DC, but Tesla had invented an AC transformer, so AC power won out.
Cool, i know way too little about this stuff.


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Offline crazypj

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Re: Dohc Cb750f: possibly a valve issue
« Reply #43 on: Sep 03, 2018, 20:32:33 »
Thanks for the history lesson irk.  8)
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline irk miller

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Re: Dohc Cb750f: possibly a valve issue
« Reply #44 on: Sep 03, 2018, 21:28:40 »
Haha.  The cool thing about it all, and sorry for all of this thread jacking, is nowadays with wind power and solar power the technology has finally caught up to what Edison was trying to do.  It's amazing to think how much he was ahead of his time. 

Offline SquidHunter

  • Posts: 75
Re: Dohc Cb750f: possibly a valve issue
« Reply #45 on: Sep 03, 2018, 23:30:48 »
So apparently the heat issue will be solved by adding a series regulator.  About to test the theory. Ken is sending me one. My bike is running too hot for the ignition to function properly. Everything runs great unless I hit a few redlights.

This is based on information supplied by Gary from power arc, however. It could be power arc trying to pass the buck, but the science made sense so here goes nothing.


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Offline SquidHunter

  • Posts: 75
Re: Dohc Cb750f: possibly a valve issue
« Reply #46 on: Sep 13, 2018, 20:37:31 »
So the series regulator came Wednesday. Let me be the first to say, it’s gigantic and weighs about 4lbs. Wired it up today. Did not solve the heat issue. Did not solve the ignition issue.
I called Ken at Cycle X. He’s had been thinking about the issue a lot, and suggested that I wire the regulator straight to the battery, thinking it may be a noise issue.
I did, and I think it worked 🤷🏻‍♂️. Took the bike for a romp through the city. Plenty of rpms, and plenty of redlights. No breakdown since. I’m going to take it on a longer ride Sunday to be for sure.


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Offline SquidHunter

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Re: Dohc Cb750f: possibly a valve issue
« Reply #47 on: Sep 13, 2018, 21:25:47 »
Question: what size fuse should I use to run the regulator straight to the battery?


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Offline irk miller

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Re: Dohc Cb750f: possibly a valve issue
« Reply #48 on: Sep 14, 2018, 07:46:42 »
I wouldn't run a fuse between the regulator and battery, but I'd run them between the battery and everything else.

Offline crazypj

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Re: Dohc Cb750f: possibly a valve issue
« Reply #49 on: Sep 14, 2018, 12:00:02 »
Yep, do as Irk says. Running a fuse between regulator and battery will cause a 'runaway' condition if it breaks and fry everything electrical. (you'll have at least 17v but more likely 90+@5,000rpm)
With battery in circuit, the reg has a reference voltage.
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0