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[2014ZeroSR]

14 SR, ~45k miles, mode = Eco both days (2/15 and 2/16)

Hoping for Suggestions / Corrective action for the below?

++++++++++
                  
Uncommanded acceleration
   
The past 2 days, the bike began to lurch, surged, and even several WOT’s.
The unexpected WOT’s were quite exciting.
I was just cruising, no spirited riding at all.
What’s strange, the first symptoms only occur after the first 30 minutes of riding have passed. Then the unexpected events get progressively worse at any speed and undetermined duration.

No pattern exists when or where it happens.

Towards the end of yesterdays 250 mile ride, on a straight away, went WOT for about 2 seconds - Kill switch saved the day.

Another time, just before arriving home, when the stop light turned green, nothing happened, then excessive surging, lurching and attempts to WOT - kill switch needed again.

Current solution - Bike is permanently parked until it’s fixed.

Error codes = Nothing remarkable, just the standard 44 and 45.

Logs pulled. Odometer was noted right after the event(s). Who ever recently provided that tip - Thanks.

+++++++

Here’s some samples:

Do the "Batt Dischg Cur Limited" entries indicate a problem?

'Throttle fault' - First entry appeared on Feb16, 2020.
Prior to Feb 16, I had never seen a throttle fault in the logs.
Things were somewhat wonky the previous day.
The below sections are a small part of the logs.


Zero MBB log
Firmware rev.      54
Model              SR

 Entry    Time of Log (local)      Event                      Conditions
+--------+----------------------+--------------------------+----------------------------------
 03330     02/15/2020 18:52:23   Riding                     PackTemp: h 37C, l 33C, PackSOC: 66%, Vpack:105.338V, MotAmps:   0, BattAmps:   1, Mods: 01, MotTemp:  73C, CtrlTemp:  22C, AmbTemp:  12C, MotRPM:1871, Odo:72778km
 03331     02/15/2020 18:53:23   Riding                     PackTemp: h 37C, l 33C, PackSOC: 65%, Vpack:105.327V, MotAmps: -42, BattAmps: -27, Mods: 01, MotTemp:  73C, CtrlTemp:  22C, AmbTemp:  11C, MotRPM:2813, Odo:72779km
 03332     02/15/2020 18:54:23   Riding                     PackTemp: h 37C, l 33C, PackSOC: 65%, Vpack:104.339V, MotAmps:  93, BattAmps:  54, Mods: 01, MotTemp:  72C, CtrlTemp:  21C, AmbTemp:  10C, MotRPM:2314, Odo:72780km
 03333     02/15/2020 18:55:23   Riding                     PackTemp: h 37C, l 32C, PackSOC: 64%, Vpack:104.226V, MotAmps:  42, BattAmps:  33, Mods: 01, MotTemp:  72C, CtrlTemp:  20C, AmbTemp:  10C, MotRPM:3264, Odo:72781km
 03334     02/15/2020 18:56:23   Riding                     PackTemp: h 37C, l 32C, PackSOC: 63%, Vpack:103.153V, MotAmps:  93, BattAmps:  85, Mods: 01, MotTemp:  72C, CtrlTemp:  19C, AmbTemp:  11C, MotRPM:3659, Odo:72783km
 03335     02/15/2020 18:57:23   Riding                     PackTemp: h 37C, l 32C, PackSOC: 62%, Vpack:102.806V, MotAmps:  85, BattAmps:  80, Mods: 01, MotTemp:  73C, CtrlTemp:  19C, AmbTemp:  11C, MotRPM:3719, Odo:72784km
 03336     02/15/2020 18:57:23   Batt Dischg Cur Limited    679 A (98%), MinCell: 3648mV, MaxPackTemp: 37C
 03337     02/15/2020 18:58:23   Riding                     PackTemp: h 36C, l 32C, PackSOC: 61%, Vpack:102.309V, MotAmps:  94, BattAmps:  86, Mods: 01, MotTemp:  75C, CtrlTemp:  19C, AmbTemp:  12C, MotRPM:3657, Odo:72786km
 03338     02/15/2020 18:58:23   Batt Dischg Cur Limited    660 A (95%), MinCell: 3632mV, MaxPackTemp: 36C
 03339     02/15/2020 18:59:23   Riding                     PackTemp: h 36C, l 32C, PackSOC: 60%, Vpack:103.377V, MotAmps: -39, BattAmps: -31, Mods: 01, MotTemp:  75C, CtrlTemp:  19C, AmbTemp:  12C, MotRPM:3217, Odo:72787km
 03340     02/15/2020 18:59:23   Batt Dischg Cur Limited    645 A (93%), MinCell: 3662mV, MaxPackTemp: 36C
 
Here's more:

 03508     02/16/2020 10:44:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 69%, Vpack:103.675V, MotAmps:  45, BattAmps:  34, Mods: 01, MotTemp:  84C, CtrlTemp:  24C, AmbTemp:  16C, MotRPM:3238, Odo:72859km
 03509     02/16/2020 10:45:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 69%, Vpack:103.377V, MotAmps:  85, BattAmps:  67, Mods: 01, MotTemp:  80C, CtrlTemp:  22C, AmbTemp:  16C, MotRPM:3382, Odo:72860km
 03510     02/16/2020 10:46:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 67%, Vpack:102.275V, MotAmps: 115, BattAmps:  96, Mods: 01, MotTemp:  80C, CtrlTemp:  23C, AmbTemp:  16C, MotRPM:3577, Odo:72862km
 03511     02/16/2020 10:47:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 66%, Vpack: 101.82V, MotAmps: 101, BattAmps:  81, Mods: 01, MotTemp:  83C, CtrlTemp:  24C, AmbTemp:  16C, MotRPM:3326, Odo:72863km
 03512     02/16/2020 10:48:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 65%, Vpack:104.066V, MotAmps: -36, BattAmps: -30, Mods: 01, MotTemp:  82C, CtrlTemp:  22C, AmbTemp:  17C, MotRPM:3457, Odo:72865km
 03513     02/16/2020 10:48:55   Batt Dischg Cur Limited    674 A (97%), MinCell: 3711mV, MaxPackTemp: 22C
 03514     02/16/2020 10:49:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 65%, Vpack:102.353V, MotAmps:  89, BattAmps:  80, Mods: 01, MotTemp:  80C, CtrlTemp:  22C, AmbTemp:  17C, MotRPM:3641, Odo:72866km
 03515     02/16/2020 10:50:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 64%, Vpack:102.418V, MotAmps:  73, BattAmps:  58, Mods: 01, MotTemp:  78C, CtrlTemp:  21C, AmbTemp:  18C, MotRPM:3283, Odo:72868km
 03516     02/16/2020 10:51:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 63%, Vpack:103.677V, MotAmps: -46, BattAmps: -12, Mods: 01, MotTemp:  79C, CtrlTemp:  22C, AmbTemp:  19C, MotRPM:1197, Odo:72869km
 03517     02/16/2020 10:51:55   Batt Dischg Cur Limited    668 A (96%), MinCell: 3699mV, MaxPackTemp: 22C
 03518     02/16/2020 10:52:55   Riding                     PackTemp: h 22C, l 21C, PackSOC: 62%, Vpack: 101.32V, MotAmps: 114, BattAmps:  97, Mods: 01, MotTemp:  81C, CtrlTemp:  22C, AmbTemp:  19C, MotRPM:3383, Odo:72870km


Here's some throttle faults:

 03604     02/16/2020 11:28:59   DEBUG: Module scheme changed from Running mode to Stopped mode   
 03605     02/16/2020 11:28:59   DEBUG: Module mode Change Does Not Require Disconnect   
 03606     02/16/2020 11:29:09   DEBUG: Module scheme changed from Stopped mode to Running mode   
 03607     02/16/2020 11:29:09   DEBUG: Module mode Change Does Not Require Disconnect   
 03608     02/16/2020 11:29:32   SEVCON CAN EMCY Frame      Error Code: 0x1000, Error Reg: 0x01 Sevcon Error Code: 0x4981, Data: 0x00 0x00 0x00 , Throttle Fault
 03609     02/16/2020 11:29:32   SEVCON CAN EMCY Frame      Error Code: 0x   0, Error Reg: 0x00 Sevcon Error Code: 0x4981, Data: 0x00 0x00 0x4d , Throttle Fault
 03610     02/16/2020 11:29:33   DEBUG: Module scheme changed from Running mode to Stopped mode   
 03611     02/16/2020 11:29:33   DEBUG: Module mode Change Does Not Require Disconnect   
 03612     02/16/2020 11:29:38   DEBUG: Module scheme changed from Stopped mode to Running mode   
 03613     02/16/2020 11:29:38   DEBUG: Module mode Change Does Not Require Disconnect   
 03614     02/16/2020 11:29:55   Riding                     PackTemp: h 24C, l 23C, PackSOC: 40%, Vpack:100.664V, MotAmps:  28, BattAmps:   4, Mods: 01, MotTemp:  67C, CtrlTemp:  26C, AmbTemp:  20C, MotRPM: 324, Odo:72914km
 03615     02/16/2020 11:29:55   Batt Dischg Cur Limited    535 A (77%), MinCell: 3589mV, MaxPackTemp: 24C

Here's more 'Throttle faults'


 03647     02/16/2020 12:20:05   SEVCON CAN EMCY Frame      Error Code: 0x1000, Error Reg: 0x01 Sevcon Error Code: 0x4981, Data: 0x00 0x00 0x00 , Throttle Fault
 03648     02/16/2020 12:20:05   SEVCON CAN EMCY Frame      Error Code: 0x   0, Error Reg: 0x00 Sevcon Error Code: 0x4981, Data: 0x00 0x00 0x08 , Throttle Fault
 03649     02/16/2020 12:20:05   SEVCON CAN EMCY Frame      Error Code: 0x1000, Error Reg: 0x01 Sevcon Error Code: 0x4981, Data: 0x00 0x00 0x00 , Throttle Fault
 03650     02/16/2020 12:20:06   SEVCON CAN EMCY Frame      Error Code: 0x   0, Error Reg: 0x00 Sevcon Error Code: 0x4981, Data: 0x00 0x00 0x09 , Throttle Fault
 03651     02/16/2020 12:24:53   Charging                   PackTemp: h 33C, l 31C, AmbTemp: 23C, PackSOC: 92%, Vpack:114.204V, BattAmps: -51, Mods: 01, MbbChgEn: Yes, BmsChgEn: No
 03652     02/16/2020 12:28:56   Key On   

++++++++++

Here’s a few ‘disarmed’. I’m not sure what it’s about.

 03692     02/16/2020 13:03:16   Riding                     PackTemp: h 32C, l 30C, PackSOC: 74%, Vpack:106.371V, MotAmps:  66, BattAmps:  30, Mods: 01, MotTemp:  76C, CtrlTemp:  28C, AmbTemp:  19C, MotRPM:1936, Odo:72951km
 03693     02/16/2020 13:04:16   Riding                     PackTemp: h 32C, l 30C, PackSOC: 74%, Vpack:106.524V, MotAmps:  47, BattAmps:  20, Mods: 01, MotTemp:  76C, CtrlTemp:  27C, AmbTemp:  20C, MotRPM:1736, Odo:72952km
 03694     02/16/2020 13:05:16   Riding                     PackTemp: h 32C, l 30C, PackSOC: 73%, Vpack:106.934V, MotAmps: -62, BattAmps: -10, Mods: 01, MotTemp:  75C, CtrlTemp:  27C, AmbTemp:  20C, MotRPM: 905, Odo:72952km
 03695     02/16/2020 13:06:16   Riding                     PackTemp: h 32C, l 30C, PackSOC: 73%, Vpack:106.496V, MotAmps: 236, BattAmps:  30, Mods: 01, MotTemp:  72C, CtrlTemp:  27C, AmbTemp:  20C, MotRPM: 374, Odo:72953km
 03696     02/16/2020 13:06:45   DEBUG: Module scheme changed from Running mode to Stopped mode   
 03697     02/16/2020 13:06:45   DEBUG: Module mode Change Does Not Require Disconnect   
 03698     02/16/2020 13:07:16   Disarmed                   PackTemp: h 32C, l 30C, PackSOC: 73%, Vpack:106.845V, MotAmps:   0, BattAmps:   1, Mods: 01, MotTemp:  70C, CtrlTemp:  26C, AmbTemp:  20C, MotRPM:   0, Odo:72953km
 03699     02/16/2020 13:08:16   Disarmed                   PackTemp: h 32C, l 30C, PackSOC: 73%, Vpack:106.872V, MotAmps:   0, BattAmps:   1, Mods: 01, MotTemp:  66C, CtrlTemp:  26C, AmbTemp:  20C, MotRPM:   0, Odo:72953km
 03700     02/16/2020 13:09:16   Disarmed                   PackTemp: h 32C, l 30C, PackSOC: 73%, Vpack:106.882V, MotAmps:   0, BattAmps:   1, Mods: 01, MotTemp:  63C, CtrlTemp:  25C, AmbTemp:  20C, MotRPM:   0, Odo:72953km
 03701     02/16/2020 13:09:51   DEBUG: Module scheme changed from Stopped mode to Running mode   
 03702     02/16/2020 13:09:51   DEBUG: Module mode Change Does Not Require Disconnect   
 03703     02/16/2020 13:10:16   Riding                     PackTemp: h 32C, l 30C, PackSOC: 72%, Vpack:106.628V, MotAmps:  30, BattAmps:  11, Mods: 01, MotTemp:  64C, CtrlTemp:  26C, AmbTemp:  20C, MotRPM:1467, Odo:72953km
 03704     02/16/2020 13:11:16   Riding                     PackTemp: h 32C, l 30C, PackSOC: 72%, Vpack:106.838V, MotAmps: -46, BattAmps: -15, Mods: 01, MotTemp:  65C, CtrlTemp:  26C, AmbTemp:  20C, MotRPM:1525, Odo:72954km

++++++++++

more Throttle faults and other things

 03896     02/16/2020 16:23:13   Riding                     PackTemp: h 31C, l 30C, PackSOC: 75%, Vpack:105.948V, MotAmps:  22, BattAmps:  17, Mods: 01, MotTemp:  83C, CtrlTemp:  26C, AmbTemp:  19C, MotRPM:2797, Odo:73031km
 03897     02/16/2020 16:24:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 73%, Vpack:104.445V, MotAmps:  95, BattAmps:  84, Mods: 01, MotTemp:  84C, CtrlTemp:  27C, AmbTemp:  18C, MotRPM:3685, Odo:73033km
 03898     02/16/2020 16:25:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 72%, Vpack:105.261V, MotAmps:   4, BattAmps:  -2, Mods: 01, MotTemp:  84C, CtrlTemp:  26C, AmbTemp:  19C, MotRPM:3316, Odo:73034km
 03899     02/16/2020 16:25:14   SEVCON CAN EMCY Frame      Error Code: 0x1000, Error Reg: 0x01 Sevcon Error Code: 0x4981, Data: 0x00 0x00 0x00 , Throttle Fault
 03900     02/16/2020 16:25:15   SEVCON CAN EMCY Frame      Error Code: 0x   0, Error Reg: 0x00 Sevcon Error Code: 0x4981, Data: 0x00 0x00 0x40 , Throttle Fault
 03901     02/16/2020 16:26:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 71%, Vpack: 104.28V, MotAmps:  78, BattAmps:  58, Mods: 01, MotTemp:  85C, CtrlTemp:  27C, AmbTemp:  19C, MotRPM:3248, Odo:73036km
 03902     02/16/2020 16:27:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 70%, Vpack:103.944V, MotAmps: 104, BattAmps:  78, Mods: 01, MotTemp:  83C, CtrlTemp:  26C, AmbTemp:  19C, MotRPM:3191, Odo:73037km
 03903     02/16/2020 16:28:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 69%, Vpack:103.594V, MotAmps:  97, BattAmps:  78, Mods: 01, MotTemp:  83C, CtrlTemp:  26C, AmbTemp:  18C, MotRPM:3460, Odo:73038km
 03904     02/16/2020 16:29:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 68%, Vpack:102.294V, MotAmps: 201, BattAmps: 146, Mods: 01, MotTemp:  85C, CtrlTemp:  26C, AmbTemp:  18C, MotRPM:3307, Odo:73040km
 03905     02/16/2020 16:30:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 66%, Vpack: 102.68V, MotAmps: 133, BattAmps: 105, Mods: 01, MotTemp:  85C, CtrlTemp:  26C, AmbTemp:  17C, MotRPM:3190, Odo:73041km
 03906     02/16/2020 16:31:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 65%, Vpack:102.169V, MotAmps: 125, BattAmps: 111, Mods: 01, MotTemp:  87C, CtrlTemp:  26C, AmbTemp:  17C, MotRPM:3634, Odo:73043km
 03907     02/16/2020 16:32:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 64%, Vpack: 102.78V, MotAmps:  60, BattAmps:  44, Mods: 01, MotTemp:  86C, CtrlTemp:  26C, AmbTemp:  17C, MotRPM:3187, Odo:73044km
 03908     02/16/2020 16:32:13   Batt Dischg Cur Limited    675 A (97%), MinCell: 3647mV, MaxPackTemp: 32C
 03909     02/16/2020 16:33:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 63%, Vpack:101.971V, MotAmps: 145, BattAmps: 114, Mods: 01, MotTemp:  85C, CtrlTemp:  26C, AmbTemp:  17C, MotRPM:3163, Odo:73046km
 03910     02/16/2020 16:33:13   Batt Dischg Cur Limited    664 A (96%), MinCell: 3622mV, MaxPackTemp: 32C
 03911     02/16/2020 16:34:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 61%, Vpack:101.774V, MotAmps: 119, BattAmps:  99, Mods: 01, MotTemp:  85C, CtrlTemp:  26C, AmbTemp:  17C, MotRPM:3346, Odo:73047km
 03912     02/16/2020 16:34:13   Batt Dischg Cur Limited    646 A (93%), MinCell: 3626mV, MaxPackTemp: 32C
 03913     02/16/2020 16:35:13   Riding                     PackTemp: h 32C, l 30C, PackSOC: 60%, Vpack:101.793V, MotAmps:  87, BattAmps:  71, Mods: 01, MotTemp:  85C, CtrlTemp:  25C, AmbTemp:  17C, MotRPM:3463, Odo:73049km
 03914     02/16/2020 16:35:13   Batt Dischg Cur Limited    630 A (91%), MinCell: 3617mV, MaxPackTemp: 32C
 03915     02/16/2020 16:36:12   DEBUG: Module scheme changed from Running mode to Stopped mode   
 03916     02/16/2020 16:36:12   DEBUG: Module mode Change Does Not Require Disconnect   
 03917     02/16/2020 16:36:13   Disarmed                   PackTemp: h 32C, l 30C, PackSOC: 59%, Vpack:102.787V, MotAmps:   0, BattAmps:   1, Mods: 01, MotTemp:  84C, CtrlTemp:  24C, AmbTemp:  16C, MotRPM:   8, Odo:73050km
 03918     02/16/2020 16:36:13   Batt Dischg Cur Limited    618 A (89%), MinCell: 3661mV, MaxPackTemp: 32C

[TheRan]

The battery current discharge limiting could be normal, I would think probably caused by the temperature (the minimum cell voltage looks okay to me).

Looking up the error codes listed along with the throttle fault message doesn't really give any additional info (0x4981 means throttle fault, 0x1000 is a generic error, 0x00 is a generic error, and 0x01 is a current related error).

My guess as to the most logical solution would be to get a replacement throttle, being a mechanical component it's not unfeasible for it to go bad.

[Crissa]

I would have your throttle looked at or straight up replaced.

I doubt it would cause an error message, if the throttle was giving a spurious input.

-Crissa

[DonTom]

14 SR, ~45k miles, mode = Eco both days (2/15 and 2/16)

Hoping for Suggestions / Corrective action for the below?

++++++++++
                  
Uncommanded acceleration
   
The past 2 days, the bike began to lurch, surged, and even several WOT’s.
The unexpected WOT’s were quite exciting.
I was just cruising, no spirited riding at all.

All this has happened to Shadow (who has been very busy lately, but is a moderator of this forum) here in Reno a couple of years ago. I had his bike towed to the dealer, so I know the details. His bike, however, was a 2016 DS.

He had one early warning sign, a complete loss of regen, so I wonder if that also happened to you.

There could have been one difference. His bike became  too dangerous to ride and he claims the kill switch then did not work and had to use the main key to stop the motor. That's when he stopped on the road about 5 miles from me and gave me a call.

The shop found his motor way out of commission. They were able to make the bike ride-able in a day or two,  but it still did not perform as it should. There was something wrong with the motor. A new motor fixed all  the problems.

IMO, you should tow your bike to the Zero shop. Don't ride it until fixed. And explain to the shop, so they don't try to ride it into the shop.

-Don- Reno, NV

[Curt]

IMO, you should tow your bike to the Zero shop. Don't ride it until fixed. And explain to the shop, so they don't try to ride it into the shop.

Indeed, I'd attach a big tag to the key saying STUCK THROTTLE DO NOT RIDE!

I'd hope it's just the Magura throttle potentiometer gone bad. https://zeromanual.com/wiki/Magura_Throttle

Maybe try to disconnect the 4-pin connector, measure the resistance across brown-blue and across brown-yellow, and see if they respond smoothly full range 0-5K?

[2014ZeroSR]

Thanks to all for your suggestions and comments.

Throttle, I’ll replace it and see how it goes. Replacing it here is something I can do easily here.

TheRan - I learned something from your post about 0x... codes. I didn’t realize they were valid codes until now. Mechanical component - my thoughts exactly.
~~
Crissa - A replacement is the way to go.
~~
Curt - Good idea.
~~
DonTom - Good ideas and suggestions but,

Motor commissioning - not for a 14.

For repair, the only shop I now trust is Hollywood Electrics even though it’s 400 miles one-way.

Regen is fine. If I understand the logs correctly, a negative value when riding indicates regen is working. Also in Eco, every time the throttle went neutral, regen kicked in nicely. Here’s one of the summarized entries with negative values -  03331   02/15/2020 18:53:23 ...... MotAmps: -42, BattAmps: -27, .... Odo:72779km

If the throttle replacement doesn't work, I’ll be making a trip very soon.

~~

Tools used -
[1] Zero app worked very well. For the first 3 years I owned the bike, the app never worked for me.
[2] On-line parser worked great.
[3] Unofficial manual - lots of useful info there.

[TheRan]

If you ever want to find out what the error codes mean this is the page from the manual that I used

https://zeromanual.com/wiki/Gen2/Motor_Controller/CAN_Diagnostics

[DonTom]

Motor commissioning - not for a 14.

I know there are no commissioning adjustments for the 14, but is it still possible to be out of commissioning as the motor ages? Or did it use an entirely different method to run the motor? If it's different, I would like to know what the differences are.


-Don-  Reno, NV

[BrianTRice@gmail.com]

Motor commissioning does not have a preventative maintenance schedule for pre-IPM motors, but it still can be done IIRC and can be necessary. The controller can't necessarily maintain alignment on its own in all circumstances. Or at least I wouldn't trust it to.


Of course, the throttle can be faulty, but there should be log indications more specific than what you're seeing, again IIRC.

[Crissa]

How would a motor commissioning affect unintended throttle?

-Crissa

[DonTom]

How would a motor commissioning affect unintended throttle?

-Crissa

PWM motor timing can be critical. Perhaps two thin pluses can be timed so far off to be interrupted  intermittently by the motor as one long wide pulse for a higher speed. Can make the motor go crazy at a steady throttle.

I assume the motor itself changes first and then has to be adjusted to match. That is what seemed to happen with Shadow's bike, as the recommissioning only made the bike run and rideable, but nothing like normal until the new motor and recommissioned again, perhaps back to very close to what would have worked if only the motor was changed to begin with.

Anyway, that is my guess, as I do not have all the facts to be certain.

-Don-  Reno, NV

 

[Richard230]

Anyone recall the "glitch" on 2012 Zero models?  That seemed to be a situation where the controller would loose its synchronization with the motor encoders and stall out while running.  Interestingly, Zero had a recall for that problem which apparently somehow reprogrammed the controller so that it would self-synchronize to the encoders while running. (Self-commissioning, perhaps?) I know that my 2012 S experienced that issue a couple of times, but after Zero did their thing with my bike at their factory, it never occurred again - until ending its life at the Zero 2012 recall crusher.   

[2014ZeroSR]

Thanks to ‘evtricity’ for - "Domino Premium throttle to replace stock Magura throttle" - « on: March 21, 2015, 04:36:31 PM »
The thread made it all seem easy.
~~~~~
Domino throttle replacement went well.
No more problems with surging, lurching or WOT’s.
~~~~~
Domino Throttle - acquired from Amazon. Box contained:
[1] Two nice grips, one was already installed on the throttle.
[2] Connector and pins
[3] Instructions
It’s a very nice kit.
~~~~~
Replacement connector that came with the Domino throttle -
Maybe get a smaller connector for 3 pins as only three are required.

Crimper - I didn’t have the proper crimper for the provided pins but I did manage.
~~~~~
What I removed -
[1] Headlight
[2] Headlight bracket
[3] Display
[4] Gas tank (pseudo)

My interest was to allow myself lots of room.

The gas tank was removed to find the existing throttle cable connection.
The connection was fine.
~~~~~
14 SR throttle wiring is a little different than highlighted in thread -  Domino Premium throttle to replace stock Magura throttle « on: March 21, 2015, 04:36:31 PM »

     14 SR   |  Domino
[1] Black    |   White
[2] Brown   |   Black
[3] Blue      |   Blue

~~~~~
Old throttle - I ohmed it out. It was wacked.
~~~~~
Testing

For maximum safety, The following was adhered to:
[1] Rear stand used - rear tire up and free
[2] Side stand up
[3] Kill switch on
[4] Key on
[5] Custom mode selected - max torque set to zero percent.
[6] Rear tire, check again for freedom of movement
[7] Made note of how nice the weather is at this moment. Take deep breath and continue, this is it....
[8] Kill switch OFF
[9] All ok so far (thought, this is very good)
[10] Now, roll on ever so slowly.
[11] How nice is this, it’s working great.
[12] Note to self, the Domino throttle, less rotation for full throttle, I like it.
[13] Kill switch on
[14] Key off
[15] Reattach the headlight, clean up, put things away.
[16] Went for a nice long hard test ride.
[17] All ok, life is in balance again.
~~~~~
Motor commissioning was mentioned earlier in this thread even though it’s a 14. Now that the bike is ok again, I’ll look in to the feasibility of having it done.
~~~~~
Domino throttle grip - I removed it to reinstall my Koso Apollo heated grip.
The Domino grip wouldn’t come off, so I applied heat from a heat gun.
Removal was still somewhat difficult. Thought, maybe if the grip had been a bit warmer, it would have slipped off more easily. End result - the nice grip was saved.
~~~~~
Here’s another issue that occurred about a week before the throttle failed.
The mode switch was hardly working. I was stuck in Eco. Also, I couldn’t activate Bluetooth. I received a replacement from Hollywood Electrics just before the throttle became an issue. Harlan mentioned it was an easy change out.

I replaced it at the same time as the throttle.

After replacing - Modes and Bluetooth work as before.
The Kill / mode resides in the same housing.
So, there it is - two new switches installed.
The connector was just behind the headlight.
The change out was very easy.
~~~~~

[Curt]

Fantastic! Sounds like you ended up better than new. It almost makes me wish my throttle would go bad so I could get less rotation for full throttle. Nah, too much work.