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  #1  
Old 07-27-2017, 03:55 PM
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Did my 2015 K1300s just have a clutch issue?

I'm kind of scared to get the answer to this one. I have a 2015 K1300s Motorsports, with 16,000 miles on it. Had not ridden for a month (it's hot here in Phoenix), but took it to lunch on Monday. A block from the house as I opened up the throttle the first time, it got to about 6000 rpm and refused to go faster as I gave it more gas. Instead I heard sort of a brapping exhaust noise, and the rpms when up (a bit) though I did not increase in speed.

This happened a couple of times in a couple hundred yards. I was trying to see if the problem repeated, which it did, but I was not trying to see just how far I could push it.

I then slowed for a stop sign, and when I started off again the problem was gone.

This is the only time I've had this happen, and it did not recur on the way home from lunch 2 hours later.
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  #2  
Old 07-27-2017, 04:12 PM
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Re: Did my 2015 K1300s just have a clutch issue?

Wild guess here...could a rodent have taken up shelter in your exhaust while it was not being ridden?
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  #3  
Old 07-28-2017, 06:34 AM
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Re: Did my 2015 K1300s just have a clutch issue?

If the revs went up but the speed didn't then there is some clutch slippage happening. Could the noise have come from your clutch?
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Old 07-28-2017, 07:21 AM
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Re: Did my 2015 K1300s just have a clutch issue?

If it was the clutch would the problem disappear or continue to occur as you continued your ride home? Could have been a glitch, my k1200rs would stall for no reason every blue moon, start right back up and I wouldn't see the problem again for months or a year. Hopefully it's nothing serious but if your bike is under warrenty take it in to the dealer and have them look at it.
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Old 07-28-2017, 09:16 AM
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Re: Did my 2015 K1300s just have a clutch issue?

Quote:
Originally Posted by Capt Howdy
If the revs went up but the speed didn't then there is some clutch slippage happening.

Like Capt Howdy says.
But are you sure the revs went up? If not, you could have activated the full throttle stop. That gives the impression of the clutch slipping but without the combination of the revs going up and the increase in speed lagging behind. It just slows down the acceleration.
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  #6  
Old 07-28-2017, 09:18 AM
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Re: Did my 2015 K1300s just have a clutch issue?

My turn to guess......traction control was activated, slippery road. Clutch is fine. At least from here that's how it looks.
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  #7  
Old 07-28-2017, 11:18 AM
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Re: Did my 2015 K1300s just have a clutch issue?

If the clutch was slipping, then the bikes RPMs would rev all day long and go to redline if you tried, not stop at 6000! Like others have said maybe just a glitch, but if it's under warranty still go talk to the dealer to have them take a look.
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  #8  
Old 07-28-2017, 02:37 PM
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Re: Did my 2015 K1300s just have a clutch issue?

This was a non-slippery road, under less than full acceleration. Guys, I have 16,000 miles on my bike, I know how to turn the throttle and when it loses traction!

It seems as if the SOUND level went up (and sounded very peculiar) but the speed did not. I thought the rpms went up too, but there is a possibility that all I got was more intake roar with no increase in speed.

I was acceleration normally, when I hit about 5000 rpm (maybe a bit more), and the bike was no longer accelerating. Gave it some more throttle (2-3 times) and just got that odd sound but no acceleration.

Not wanting to break anything, I did not push it. Instead I rolled up to a stop sign (this whole incident took place over a 3-block stretch) and pulled the clutch in. Wondering what would happen when I let it out. And when I took off, all was normal.
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  #9  
Old 08-02-2017, 09:39 PM
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Re: Did my 2015 K1300s just have a clutch issue?

Happened again today, in the same spot. This time I paid a bit more attention, but I did not want to push too hard in case I was causing damage.

It appears NOT to be a clutch issue, or at least not in terms of engine rpm not tied to speed. It's more like some sort of deliberate traction or engine control.

I started up and rode 1 block to my gate, exited and turned left onto a 2-block-long street that takes me to a main road. As soon as I turned left, I gassed the bike (as usual), and once again it got to a certain RPM then refused to go faster. Twisting the throttle just made the intake sound get a lot louder (kind of a BRAAP). The RPMs would not exceed 7000, and the bike did NOT change speed or rpm - just noise level.

Today, the problem continued once I pulled out onto the main road. I then tried pulling in the clutch and blipping the throttle, and when I got back on the gas, the bike ran normally.

Just in case it is related, the bike has a bad battery. I had to bump-start it to get home, but the problem never recurred.

This problem has happened exactly twice, in the last two rides. Once the bike had been ridden for about 60 seconds, the problem went away.
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  #10  
Old 08-02-2017, 09:52 PM
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Re: Did my 2015 K1300s just have a clutch issue?

I am far from an expert, but is there any chance that the ECU is sensing or experiencing some fault that causing the ECU to go into a "limp home" mode for a short time?
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Old 08-03-2017, 04:34 AM
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Re: Did my 2015 K1300s just have a clutch issue?

Weak batteries, like bad coils, can cause all kinds of weird problems but the bike's alternator should power the electronics once the engine is running. Still, I would install a new battery.

Also these engines have under certain conditions a lag in accelarating between 5 en 6 k revs because of lean mixture. But normally it is just a very short hesitation to pick up speed and only when coming down from higher revs and then opening the throttle again.
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Old 08-11-2017, 08:11 PM
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Re: Did my 2015 K1300s just have a clutch issue?

Today I rode the bike again for the first time since the last incident. On that last ride I had to bump start the bike to get home, so there was definitely a bad battery. I ordered a new battery (from PDI Racing), and unfortunately it was defective, so I had to go out and get another one.

After charging and installing the new battery, which I think has 240CCA, the bike fires up (very quickly), and today it had no problem where it was ... failing before.

Very odd. If the problem doesn't recur, I'm going to suggest that there is some situation with a bad battery that can initially result in this problem.

Note that it ONLY occurred within the first few minutes of being started. Once I got a mile from the house, the problem was gone.
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Old 08-11-2017, 08:27 PM
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Re: Did my 2015 K1300s just have a clutch issue?

I don't know where I heard this, but I am under the impression that it takes about 15 minutes of engine operation for the battery to recover from the engine start drain. If so, maybe the problem was a combination of the bad battery and the start drain.
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Old 08-12-2017, 10:35 AM
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Re: Did my 2015 K1300s just have a clutch issue?

Yes, the combination of a weak Battery, left sitting for a month (small current load from the electronics is always there so getting weaker by the day), then being started on month old Gasoline, then likely shunting a larger than normal amount of current from the Alternator to try and recharge the weak Battery may have been the culprit.

But without knowing things like the pre-start condition of the Battery (how weak), the Alternator output curve (turn-on speed), the minimum voltage required for stable function of the various Electronic Components (maybe ~11 VDC), old gasoline, etc...

Hopefully the new Battery took care of it.
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  #15  
Old 08-13-2017, 10:02 AM
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Re: Did my 2015 K1300s just have a clutch issue?

Do you have a GS911? You can check for fault codes. But my guess is the bad battery. Month old gas is not old.

My 2015 MS will very occasionally feel like it drops a cylinder. Down on power and sputtery performance. It will last for about 30 seconds then back to normal and won't do it again for months. Has done it 3 or 4 times in 9000 miles. No fault codes. Dealer couldn't reproduce so they did nothing.

Hopefully a fresh battery will solve your issue. You may want to keep it on a tender so you get more than 2 years life.
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  #16  
Old 08-14-2017, 07:16 PM
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Re: Did my 2015 K1300s just have a clutch issue?

Summary: Problem is gone, at least for each of the 4 rides I took after replacing the battery. What I think happened is that there was too weak a spark to properly fire the engine past a certain RPM. It matches the symptoms, though it is surprising.

The problem only occurred within about 120 seconds of starting the bike.
The problem happened at somewhat different RPM's.
The problem has disappeared, and the only change was a battery replacement.
On the last ride, the bike barely started, and I had to bump-start it to get home. (It was several minutes before I got the revs up on that last ride, and I did not have a problem.)
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