As I said, it is the second one that I have lost, although I have know way of knowing if it is the same failure or not.

On the first I was about 1/4 mile away from my neighborhood already accelerated up to speed 45 - 50 mph.

This time I was just starting out in the driveway, and barely touch the throttle. It made kind of a hard bump, then the controller started to fizz. I was pointed downhill and in know particular hurry, so it's not even like I goosed the throttle.

From: "Mark Thomasson" <[EMAIL PROTECTED]>
Reply-To: ElectricMotorcycles <[email protected]>
To: <[email protected]>
Subject: Re: [ElectricMotorcycles] Another Alltrax let's the smoke out
Date: Thu, 27 Jul 2006 18:14:41 -0500

Just curious, what were the circumstances? Climbing a hill? Heavy acceleration? or just putting along.

thanks,  Mark
----- Original Message ----- From: "damon henry" <[EMAIL PROTECTED]>
To: <[email protected]>; <[email protected]>
Sent: Wednesday, July 26, 2006 11:13 PM
Subject: [ElectricMotorcycles] Another Alltrax let's the smoke out


Well for the second time my Alltrax controller let the smoke out. It should still be under warranty so I will be getting ahold of Alltrax again, but I wonder why it did it. I never have gotten around to putting in my main contactor so I know it is not voltage spikes. I just use one of those switches with a the big red plastic key. My precharge circuit consists of a momentary switch and a 6 ohm resistor that I engage until the green LED comes on. The only other thing that I can think of is that I am running a 54 volt nominal pack on a 48 volt controller, but everything stays within the controllers rated values. The controller is disconnected during charging as the pack can go as high as 75 volts, and a fully charged pack usually settles down to around 58 or 59 volts. The controller has built in overvoltage protection which kicks in at 60 volts.

Has anyone else had let the smoke out of their Alltrax with a series wound motor?

I'll talk to Alltrax before I decide anything for sure, but I'm considering liquidation at this point. the motorcycle has been a lot of fun, but it has a way of always spending more of my time and/or money :-)

damon








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