Loud scratching noise and loss of power

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Joined: 02/22/2012
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Points: 33

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

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Joined: 12/19/2011
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Points: 74
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.

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Joined: 02/13/2012
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Points: 51
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

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Jesse in Atlanta

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Joined: 07/07/2007
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Points: 1546
Re: Loud scratching noise and loss of power

Lionstrike wrote:

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

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Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst replacement TC Charger
conversion
Spent so far: $5800 + $7000 + $1720 + $960 + $320 + $720 + $140 + $600
Cost to do it again: $2500 + $5600 + $1720 + $960 + $320 + $720 + $140 + $600
Cost for a Petrol bike:$6000 + + $1440 + $6000 + $800 + $1400 + $3200 servicing
Total spent: $17260
Total to do again: $12560
Total to have used a petrol bike: $18840
Total distance travelled so far: 79'120km

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Joined: 10/20/2008
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Points: 369
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.

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Joined: 12/19/2011
Posts:
Points: 74
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.

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Joined: 10/20/2008
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Points: 369
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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