A new failure mode?

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Last post
Last seen: 9 months 19 hours ago
Joined: Saturday, July 7, 2007 - 23:55
Points: 1686
A new failure mode?

Hi Guys,

my V did something a little worrying today.

while taking off from a stop, I turned the throttle to full, and the bike accelerated to ~20kmh, and then started shuddering, with acceleration happening really really slowly. (unfortunate really, as I had just finnished splitting.

It felt kinda like I had either lost a phase, or the encoder was reporting an inaccurate rotor position and the MC was going in and out of current limit (hardware enforced, not the usual smooth software enforced current limit).

I pulled over and turned the bike on and off, and now its back to normal, as if it had never happened.

I'm running latest software, but I have no charger.
As I understand it, with the latest software, the charger prompts the display to show warning lights.

My question is, has anyone else ever encountered shuddering and poor acceleration before?
was it a precursor for another failure, or just a one off quirk?


moccasin's picture
Last seen: 9 years 5 months ago
Joined: Friday, July 11, 2008 - 19:05
Points: 494
Re: A new failure mode?

Mine did that once, but it was on take off, NOT after I was already underway. I stopped, shut it off, and started it again, never happened again. Almost felt like a belt slipping or something and would not punch up to speed.

Computers are funny animals.

Last seen: 9 months 19 hours ago
Joined: Saturday, July 7, 2007 - 23:55
Points: 1686
Re: A new failure mode?

did any warning lights come up when yours acted up (like CAN bus errors?)

my bike is behaving normally again, so it may be a one off, but I bought a spare MC just in case.

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah in July 2010. Done 194'000km

R's picture
Last seen: 1 month 3 weeks ago
Joined: Thursday, June 18, 2009 - 09:46
Points: 1768
Re: A new failure mode?


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