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post #1 of 33 (permalink) Old 02-22-2018, 04:46 PM Thread Starter
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Charging Voltage

Hi, I did check out the sticky file on electrickery etc, but as I had to charge the battery again recently. Thought I would present this issue to the crowd. I'm sure someone knows whats going on. Perhaps this is normal?

Symptom, Charging seems to be mostly OK at idle and can reach 14V just above idle, but as the revs rise the charging voltage drops into what I think is the poor range ~ 12.5V

Check out the video
https://youtu.be/GEc54fnPpYc

RichB in AZ
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post #2 of 33 (permalink) Old 02-22-2018, 08:22 PM
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Looks like a Regulator/Rectifier problem. But before you buy a new one check connections at the R/R harness to frame harness for burns or loose fit, check all connections including battery cables. You may also want to check the alt. AC output, search how to do that on this forum or U tube.
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post #3 of 33 (permalink) Old 02-22-2018, 10:23 PM
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Originally Posted by RichBinAZ View Post

Symptom, Charging seems to be mostly OK at idle and can reach 14V just above idle, but as the revs rise the charging voltage drops into what I think is the poor range ~ 12.5V
Classic symptom of a failing rectifier/regulator.
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post #4 of 33 (permalink) Old 02-22-2018, 10:59 PM
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Originally Posted by Forchetto View Post
Classic symptom of a failing rectifier/regulator.
Interestingly, your favorite RR155 on the Electrex site shows "catalog suspended"..., so I guess I'm screwed if mine ever packs it in...

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post #5 of 33 (permalink) Old 02-23-2018, 11:54 AM Thread Starter
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Thank you - thought it looked suspicious - and explains why I was getting a flat battery even after running the bike.
In the threads i was looking at the yamaha seemed a favorite replacement, although the wiring could be a bit of a challenge.

OK, more searching. - 5 wire regulator rectifier

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post #6 of 33 (permalink) Old 02-23-2018, 01:18 PM
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Interestingly, your favorite RR155 on the Electrex site shows "catalog suspended"..., so I guess I'm screwed if mine ever packs it in...
Just looked, seems to be out of stock:

http://www.electrexworld.co.uk/acata...5.html#SID=439
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post #7 of 33 (permalink) Old 02-23-2018, 02:01 PM
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Try - roadstercycle.com - for your improved regulator needs in USA.
Tom
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post #8 of 33 (permalink) Old 02-23-2018, 02:13 PM Thread Starter
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Hmmmm.... Over $200 for genuine Triumph part that will fail again OR (amazon links below)...

https://www.amazon.com/Voltage-Regulator-RMSTATOR-Universal-Shindengen/dp/B01N7BPY4D/ref=sr_1_3_sspa?s=automotive&ie=UTF8&qid=1519410955&sr=1-3-spons&keywords=mosfet+voltage+regulator&psc=1Is 50Amps going to be enough? 350W/13V = 27A That should fry any battery or wire harness

https://www.amazon.com/Regulator-Rectifier-1998-2013-540-4-019-1A-540-4-027-1A/dp/B01MZXLRLW/ref=sr_1_6?s=automotive&ie=UTF8&qid=1519410955&sr=1-6&keywords=mosfet+voltage+regulator It has a name Triumph and Ducati attached to it, which makes it worth much more.

Now I have to consider if they are knock-offs or what???

I Imagine you just tie the extra reds together (bonnie black with red stripe wire) and blacks together (bonnie black with white stripe-ground) to get it back to 5 wires. Does it matter how the yellows are connected to the Triumph black wires?

Another fun project - still haven't finished the oil cooler lines yet (found some hose, but clamps I'm not happy yet)

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Last edited by RichBinAZ; 02-23-2018 at 02:16 PM. Reason: Knock-offs?
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post #9 of 33 (permalink) Old 02-23-2018, 02:37 PM
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What about http://bellacorse.com/shop/custom-pa...tor-rectifier/
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post #10 of 33 (permalink) Old 02-23-2018, 07:42 PM
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The one from Bella Corse is the one you want. Plug and play.
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