Re: Motor or controller whine????
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Yes the f/r contactor. But I go f/n/f not reverse, to avoid accidentally sending voltage the wrong way. If it does it a lot... You might have an alignment problem with your contacts, or the coil is not pulling them down correctly. Forward should be the bottom contacts, early cars were wired backwards and used the upper contacts for forward. The bottom are better.? I use a Sr48600 and the stock f/n/r contactor so similar to your set up.? Another thing to think about is a dust cover. All it takes is one piece of crap to fall between contacts and create a problem. My stock cover no longer fits with the new controller and I am building a new cover currently.?
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That is from the f/r contractor. Not from the controller or the motor right? As you said I will toggle the contractor back and forth from forward to reverse sometimes and that will usually make it stop. Never knew what really made the noise. Good to know thanks.
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-------- Original message -------- Date: 4/15/19 8:35 PM (GMT-05:00) Subject: Re: [C-Car] Motor or controller whine????
Every once in a while mine does that too. It's the sound of the contact burning a little. Most often mine will do it if it has been super humid out. My quick fix is to toggle forward neutral forward to allow the contacts to try and seat better. Always works. Even with new contacts it still does it once in a while.?
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I have had this happen alot in my car. It has a d&d motor 48v and an altrax axe controller. The wiring is all new in the whole car. It uses the stock forward reverse contractor. Sometimes when I hit the accelerator it will make a sound like a kazoo and the harder you press the louder it gets. I let off the accelerator and lightly get back on. This almost always stops this whine from continuing. It has been doing this for a? thousand miles or so. I am not experiencing and problems but I am not sure what it could be. The controller is 600a and I have a 400a slow blow fuse attached to it. Any ideas what could make this noise. It is not terribly loud but you can hear it about the volume of someone talking quietly.?
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