Zero Recalls 94 Electric Motorcycles Due to Defect That Could Result In Rear Wheel Lockup

APR 12 2014 BY ERIC LOVEDAY 1

Zero Recall Announcement - NHTSA

Zero Recall Announcement – NHTSA

Zero Motorcycles is recalling certain electric motorcycles due to a possible manufacturing defect within the electric motor.  Zero says the motor rotor may contact the stator, causing the motor to seize, thus locking the rear wheel.  This, of course, would lead to a high likelihood of a crash.

Zero Motorcycles 2014 Lineup

Zero Motorcycles 2014 Lineup

Affect motorcycles include:

  • Model Year 2014 Zero SR motorcycles manufactured 30 December 2013 through 20 February 2014
  • Model Year 2014 Zero S motorcycles manufactured 26 December 2013 through 18 February 2014
  • Zero DS motorcycles manufactured 24 January 2013 through 4 February 2014
  • Model Year 2014 Zero FX motorcycles manufactured 14 January 2014 through 27 January 2014

The defect was discovered on February 24 after Zero was notified of a motor lockup on a 2014 Model Year SR motorcycle, which was being ridden by a pro on a race track in Australia.  This incident did not result in a crash.

Due to the high profile nature of this incident, Zero reacted swiftly by obtaining a motor from its inventory and testing for this failure.  Zero was able to reproduce the failure on a motor dyno test at sustained max rpm.  Therefore, all affected models are being recalled.

Oddly, not all of the tested motors were found to have this defect.  Zero motors is now moving forward with what it calls 100% motor screening until the actual root cause of the issue is determined.

The recall begins this month.

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1 Comment on "Zero Recalls 94 Electric Motorcycles Due to Defect That Could Result In Rear Wheel Lockup"

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Scary motor flaw. Would like to know if they need to redesign their motors or not…