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Street Triple Forum Owners and Enthusiasts of the new Triumph 675 Street Triple.

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Old 06-07-2012, 10:59 PM   #1 (permalink)
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When is a charging issue not a charging issue?

So I have a 2009 Street Triple in my workshop to sort out a charging issue. The charging system all checks out. I've swapped all the parts over to a bike that has no issues and everything is fine. The good bike charges at 14.5v all the time but the bad bike only gets to 12.6v. I know it's trying to charge as it'll sit at 11.6v if I disconnect the stator. An Amp clamp round the reg/rec output wire gives me 16A on the bad bike and 0A (or not enough to read on the scale) on the good bike.

So if the charging system is working it must be something that's drawing the power as quick as the charging system can supply it So far I've swapped the fuel tank/pump and the ECU with no luck. I'll be tearing into the bike a bit more but was wondering if anyone has come across something like this?
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Old 06-08-2012, 12:05 AM   #2 (permalink)
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Well, the old SCR R/R unit draws a lot of current as its a shunt design. Mine would burn you to the touch and was running at 220 degrees.

I would check your R/R out and replace with new MOSFET unit.

Check all your electrical connections especially the battery cables. Clean, tighten and cover with a thin film of grease.
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Old 06-08-2012, 01:14 AM   #3 (permalink)
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Even the new MOSFET unit is no guarantee - mine recently went kaput.
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Old 06-08-2012, 02:44 AM   #4 (permalink)
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Maybe we should have a separate forum for electrical issues
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Old 06-08-2012, 06:43 AM   #5 (permalink)
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I take it that you've swapped batteries?

And have you pulled the fuses for all non-essential circuits? Headlamp fuse can be pulled once the motor has started.

Rob

Last edited by williamr; 06-08-2012 at 06:47 AM.
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Old 06-09-2012, 06:47 PM   #6 (permalink)
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I've got two reg/rec's, oem and aftermarket. Both have been tested on another bike and work fine. The stator and the battery have been tested on another bike and work fine. I've bypassed the wiring with no improvement. Pulling the headlamp fuse increases the charge rate to 13v. There's no corrosion, this is a California bike.
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Old 06-11-2012, 02:30 PM   #7 (permalink)
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What a pleasant thread to find... Last week my bike just started having charging issues. Year-old battery drained down to no charge. At least when I discovered the issue by having it not start I was near a car that had jumper cables so I could get home. Was planning on dropping it off at the dealer tomorrow, but now I'm afraid they won't find the issue so easily.

On top of that, on the way in to work this morning, I started having shifting issues. With the clutch fully engaged, I couldn't shift between gears. Coming to a stop, I couldn't shift from 3rd into 1st. At the stop I had to let it slip a bit to grab and pull the shifter into place. At least I was close to work and only had one more stop before parking. When I parked, I tried shifting up through the gears and then back down. Same thing.

The bike (2009 R) is just two months off warranty. Maybe I should have gone with a used Hornet/599... Hopefully it's not too bad to sort out. I do love the bike.
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Old 06-11-2012, 05:01 PM   #8 (permalink)
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The down shifting issue you have is normal. The transmission must be kept spinning while down shifting. I always let the clutch out after each down shift and shes fine.
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Old 06-11-2012, 05:44 PM   #9 (permalink)
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Just to be clear. The MOSFET-equipped R/R is also a shunt type regulator. It just runs cooler...

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Old 06-11-2012, 07:26 PM   #10 (permalink)
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Quote:
Originally Posted by ANZAC78 View Post
The down shifting issue you have is normal. The transmission must be kept spinning while down shifting. I always let the clutch out after each down shift and shes fine.
This is correct as I had the same issue, so the behavior is totally normal. I just use engine braking through the gears on the way down through two, then hit first just before I stop. If sitting still you will have to downshift one gear, let clutch put a bit till it grabs, downshift another gear and repeat.
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