Loud scratching noise and loss of power

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Sugarstorm
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Last seen: 7 years 1 month ago
Joined: Wednesday, February 22, 2012 - 09:37
Points: 49
Loud scratching noise and loss of power

Hello,

Today I heard a loud scratching noise coming from the motor of my Vectrix, and with it a loss of power.
I pulled over. Off. Wait a minute. On. Rode home carefully with my heart pumping.
Has anyone ever had this problem before?
The gearbox oil was changed not long ago.
I thank you all in advandce for your coments.
I'm afraid to ride it until I have some feedback...

Sugarstorm

Lionstrike
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Last seen: 8 years 11 months ago
Joined: Monday, December 19, 2011 - 14:15
Points: 76
Re: Loud scratching noise and loss of power

This is just my inept opinion but I have had the same thing happen when I am hard on the throttle and regen , and hot days. I pull over for a while, the fans run, when they finish I am fine. It might be overheat related.

toolboxjesse
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Joined: Monday, February 13, 2012 - 12:52
Points: 56
Re: Loud scratching noise and loss of power

Are all of the bolts to the rear wheel properly torqued? How about the brake rotor? If one of those is loose it might be rubbing on the rear suspension.

Jesse

Jesse in Atlanta

antiscab
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Joined: Saturday, July 7, 2007 - 23:55
Points: 1686
Re: Loud scratching noise and loss of power

This is just my inept opinion but I have had the same thing happen when I am hard on the throttle and regen , and hot days. I pull over for a while, the fans run, when they finish I am fine. It might be overheat related.

thats the IGBT's internal temp sensor shutting down the IGBT on over-temp.

If you get it often, I highly recommend removing your MC, cleaning both the heatsink and IGBT module, then applying thermal grease and bolting it all back down again

If the IGBT reaches temp cut-off too many times, eventually the internal temp sensor separates from the actual module and the IGBT fails

Matt

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

ofx210p
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Last seen: 8 years 9 months ago
Joined: Monday, October 20, 2008 - 03:22
Points: 377
Re: Loud scratching noise and loss of power

The IGBT monolith makes a screaming noise when it reaches cut-off temp ???

Seems an odd thing for it to do lol.

Lionstrike
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Last seen: 8 years 11 months ago
Joined: Monday, December 19, 2011 - 14:15
Points: 76
Re: Loud scratching noise and loss of power

It sounds like when you hit the "rumble strips" on the side of the highway. Cuts your power... and then you get an overheat icon on the dash. Takes a few minutes for it to cool down and clear.

ofx210p
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Last seen: 8 years 9 months ago
Joined: Monday, October 20, 2008 - 03:22
Points: 377
Re: Loud scratching noise and loss of power

I'd follow Antiscab's recommendation then without hesitation and without using the bike too much 'til its fixed.

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