motor guide troller what is burned out

[miloman]

I have a 35 pd trust troller. I worked it hard today and I noticed that under the pedal there is some sort of a square box that has all the wires connected to it. It got really hot and after that the troller would only work on continous and at #5 speed but at less then 20 revs a minute. What did I do and what is that part called<br /><br />thanks for the help

 

[Silvertip]

Re: motor guide troller what is burned out

It's probably the speed controller. I've not been inside that particular motor but I suspect there are some wire wound resistors in there. The speed switch connects one or more of the resitors to cut down the voltage for the selected speed. In so doing, the resistors get hot as they must dissipate the heat caused by the voltage being dropped. If #5 is the fastest speed, the resistors are bypassed and either the battery had run down or the motor has gone bad or tightened up causing it to draw more current.

 

[miloman]

Re: motor guide troller what is burned out

is the speed controller the unit where all the wires attatch to.

 

[Silvertip]

Re: motor guide troller what is burned out

Probably. If the wires from the speed adjustment dial lead to this box, and the wires exiting the box go toward the head of the motor, that indeed is the speed controller.

 

[miloman]

Re: motor guide troller what is burned out

so it over heating to the point I couldnt touch it without getting burned means its fried

 

[miloman]

Re: motor guide troller what is burned out

here is the part I pulled out from under my foot control. It was so hot to the touch that in fact it would almost burn. Yesterday it only worked on con and at # 5 as I sadi with minimal rotation today I tried it again and it basiclly smelt like something was burning. Would this be the offensive part caussing my problems. Is there a way to test the motor by rewiring it in a manner to see if it will run @ # 5<br /><br />thanks

 

[Silvertip]

Re: motor guide troller what is burned out

There are likely just two wires from the controller in the picture to the head on the motor. You can connect those two wires from the motor directly to a battery to see if it spins up freely. Wired directly it should run at its fastest speed. Keep in mind there may be a safety switch that will not allow the motor run unless it is in its deployed position. Is the short shaft I see at the right of the device in the picture the shaft on which the speed selector knob was mounted? If it is, this is definitely the speed selector switch (or controller). Without a wiring diagram I can't help you prove or disprove that component is bad. However, try running the motor directly from a battery as I suggested. If it runs normally, the controller likely is at fault. If the motor doesn't run normally, the controller may be OK but simply suffering excess heat because the motor itself is drawing too much current. What size fuse/circuit breaker is installed between the battery and the trolling motor plug (or is there one????)

 

[miloman]

Re: motor guide troller what is burned out

Up in smoke firstly thanks for your help.<br /><br />I took the 2 wires 1 blue and one yellow I connected them directly to my battery and the motor didnt spin. I must add that there were no other wires connected to the unit should I connect all the wires and then run the blue and yellow direct to the battery This part is the speed controller you are right. I run no fuse between the troller and my battery it is a direct connection. Are there any specific things I can take a picture of for you; My troller is magnum 35 lb trust.

 

[miloman]

Re: motor guide troller what is burned out

ok I reconnected to speed controller as it was wired before and I attempted to run the yellow and blue off my battery. Nadda. There is no saftey switch as it will run deployed or mounted

 

[Silvertip]

Re: motor guide troller what is burned out

At this point I can only say that apparently the motor has gone bad. Connecting directly to the battery should make it run without the controller or anything else being connected. I suspect that if you took the motor apart you'd find that water had made its way into it or that it simply is wore out. That makes sense as a failing motor can draw lots of current which would cause the controller to heat up. I think you need to go trolling motor shopping.

 

[miloman]

Re: motor guide troller what is burned out

thanks up in smoke, I suspect it happened yesterday when I was on con and I jammed it up in mud and forgot I was on con. The blade was spinning but it was not rotating.

 

[trumanlake]

Re: motor guide troller what is burned out

the controller as you are calling it, is the speed switch. there should have been more wires than just the blue and yellow. i'm 99.9% sure what you have done by hooking the blue and yellow wires directly up to the battery is put 12 volts directly across the speed coils. give me a year and model number and i'll look it up. still have the books from the days of being a service center.

 

[KCLOST]

Re: motor guide troller what is burned out

It may not be the speed switch as the culprit...<br /><br />You may have fried the speed coils in the lower unit...<br /><br />My old OMC recently lost two of the speed settings.. I first replaced the speed switch, which looks exactly like yours in the picture... Nothing changed.... Ended up buying a new MG 24V.