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Messages - Kaneda

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1
Zero Motorcycles Forum | 2013+ / Re: SR/F hesitation stall issue
« on: September 18, 2020, 01:31:15 AM »
Small change, the issue became more prominent. This feels a lot like a bearing Issue that is loaded wrong / or now has a flat spot. The hesitation is the initial bind when accelerating from a stop. The bumpy sensation is likely the wheel or motor bucking. Goes away around 10mph. No noise yet-

Any other way I can test this further?

Was also told by dealer that there is no one at Zero factory right now, everyone is working from home, and the fires were about five miles away and they chose or needed to evacuate. Basically they are not responsive right now.

2
Zero Motorcycles Forum | 2013+ / Re: SR/F hesitation stall issue
« on: September 15, 2020, 05:21:46 AM »
I agree. I can’t find anything anywhere that sounds like what I’m going through. The closedown to it was a SR with a bad throttle. I promise I’ll post the resolve when I get there no matter how embarrassing or simple it may be.

3
Zero Motorcycles Forum | 2013+ / Re: SR/F hesitation stall issue
« on: September 15, 2020, 04:32:55 AM »
I don’t know the first thing about posting a log. I have a very specific to
E frame today 1:43-1:50 that was so bad I thought I’d be walking. I also noticed ‘bumpiness’ while deceleration.

In the meantime I will email both parties (dealer and Zero)

I am also dropping the heat hypothesis today as it was 70-72 outside.

4
Zero Motorcycles Forum | 2013+ / Re: SR/F hesitation stall issue
« on: September 13, 2020, 10:29:30 PM »
I had service done last month at 700 miles. I tried my best to describe the issue, Asked them
To check the log for any errors. No errors, the tech test rode it, every thing appeared at the time to be the belt which had a small bulge from a rock or something.

Zero will not communicate with me on this issue, they cut me off mid sentence and told me to contact a dealer twice during my call. Again I just trying to find the right conditions and language that will assist the dealer in a solution. Otherwise it will just sit around for months outside at the dealership. Should I try calling again?

I have not had the bike much under 30% SOC.
The only thermal limits I am aware of is what is on the display, nothing ever out of range. On the hottest day I rode it was 107 outside. I Am gravitating toward the issue being temperature related, but need more testing.

5
Zero Motorcycles Forum | 2013+ / Re: SR/F hesitation stall issue
« on: September 12, 2020, 11:10:25 AM »
Thank you both for the response. Do either of you know anything about the bad boards in the 2019 SR/F? I remember hearing about that, or was it bad cables to boards?

I left work very late and had no issues with the bike.

I would be more inclined to think some of the IC chips on the board, or the board that controls throttle or power has a issue. It’s not brakes being grabby.
As far as a local dealer, no, they sell So few zeros I doubt that they have much experience poking at them. I’m 230 miles from the dealer I bought from. The closest dealer is 142 miles. Both dealers are on the coast, where the air is cooler and the issue will likely not present itself.
IF it’s temp related, which is still a question, so far the times it occurs are above 82 sitting in sunlight. If it’s in the shade or early morning or later in evening, it seems to subside.

6
Zero Motorcycles Forum | 2013+ / SR/F hesitation stall issue
« on: September 12, 2020, 04:39:17 AM »
Hi, I need help describing a intermittent issue I am having with my new Zero SR/F 2020.
 The last week of July, the issue began. Upon acceleration a mitigation of torque occurs, a bumpy sensation. The bike hesitates and fails to accelerate and can leave you in a really bad spot on left turns in traffic.

Initially I thought it was the belt. I took the bike in at 700 miles for service and a new belt. I told the dealer The issue I was having, we both agreed it must be the belt. The issue subsided for a while, Now it’s back. At this point there is little consistency With what I say that has much certainty. All I’m trying to do is narrow the issue down so that the dealer can actually contact Zero for assistance.
What little I know:
-It only occurs under load, I was able to lift the back end up and set the cruise control on- no issues
-I’m getting closer to thinking it may be temp related. The ride to work I usually fine. The ride home after sitting in sun is the scary one.
-it seems most notable in the 0-15mph range, as the motor struggles, sometimes not able to get over 10mph in 20 yards. After 15 mph, acceleration is more pronounced, but a mutter still is audible from belt motor area.

I’m not sure the the motor is set up, but one way of describing this might be a motor that is missing power.

So, has anyone else had this issue?
How do I begin to describe this, is there any more tests I can take to help narrow this down?
I have a video that is a little help in describing the sound and sensation, but even at 4 secs too big for the forum.

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