full speed boat turn in righthand circle

[Leslie CookParticipant @lesliecook71319]

when my boat is one or two clicks of full power steers perfecty ful power on boat goes in right hand circle and dosent respont to rudder control come of full power boat steers perfect help

[Leslie CookParticipant @lesliecook71319]

[glennParticipant @glenn]

Hi Leslie, could be a number of things. can you give us some more info on the type of boat, power, prop etc

 

Cheers glenn 

[Mike DavidsonParticipant @mikedavidson22772]

Hi Leslie as soon as I read your thread, I thought that problem has got to bebroad band interference coming from your  motors, My guess is that when you demand full power, the speed control whacks the voltage up to the jolly old motors , and I guess the volts are turned too highcausing the motor some distress. When the motor is turning, the current flows through coils of wire quite fast, and as soon as the commutator breaks contact, the electromagnetic field collapses generating quite high reverse polarity voltages, which is why we fit suppressor capacitors to motor terminals. If you think this is all going on only inches from your radio receiver aerial, it is no wonder that the poor thing gets confused. I should get some suppressor capacitors, and make sure t hey are really well fittedand try some experiments with the new set up before you trust the boat to come back when you tell it to. I think the capacitors I use are 0.1 microfarad at 600 volts working, but make absolutely sure before you buyyou will find recommended values in model magazines and no doubt the model shop guys will have an informative chat with you. but here’s a tip from me, when you build a model, keep the aerial wire well away from motors

[Mike DavidsonParticipant @mikedavidson22772]

I have had another think about why this is happening, and I go back to what I said about motor interference and why it is happening. When I said that the speed control is putting the voltage to the motors too high. If you have ever done that with a battery and a motor out of the boat, you will have seen that the motor runs quite ragged at the top end, and if you had an enquiring mind at the time and felt the motor cases, you will have found them to be very hot indeedwhich is a good indication that if the volts are too high, the electrical current flows very heavily, so taking this one step further, if you do this in a boat using an ESC, not only will the motor(s)get hot, so will the battery and the ESC. If you are using the battery eliminationfacility of the ESC, you might find thaat the supply to the radio and servo’s gets disrupted too, why did I not think about that in my first response? You have had a couple of good tips in other modellers responses about motor selection, so maybe, that is the way to go. If the motors are happy with the supply and the load reflected from your propellers,the big amp currents will not flow, and everything else in the garden will be lovely.

         So, my personal recommendation is toget or fit better motors, but before that, fit them with good suppresser capacitors. Not neccessarily fitting a bigger current ESC but make sure that the one you have is capable of handling the current demanded by the motors without getting too hot, and when you put the boat in the water, make sure the motors don’t have too much work to do., weed etc.and be content with reasonable speed, just think how many fishing boats you have seen planing along at 30 knots plus. enjoy your modelling.

……………………………………………..Mike Davidson in Plymouth

[HS93Participant @hs9317166]

I bet you have a standard brass rudder, if you have cut some of the front away as prob the force of the prop is pushing on the front of the rudder  we had this with a fire boat and it cured it stright away, dont cut it all of just half of the rudder in front of the post.

[Mike DavidsonParticipant @mikedavidson22772]

 

 

Leslie, could your boat have a defect where one prop turns one way and the other turns the other way ?This would cause the boat to slow right down and turn in a circle. Run the boat open and see if you can see which way each of the props are turning. In the fault condition, is one motor not turning at all ?, This could cause the boat to turn in a large circle. Put it in the bath and have a look. If you have a volt meter, look at the voltage supplied to each motor,, Message me and let me know how you get on, I’m dying to know………………………..Mike in Plymouth52 years with the Royal Navy.

[DickyDParticipant @dickyd]

Are the dates on this topic right, it would appear the question was posted after the answers ?

[Colin BishopModerator @colinbishop34627]

Look OK to me Dicky – September still comes before October and November as far as I’m aware….

 

Colin

[DickyDParticipant @dickyd]

Who am I, what day is it , bum !!

[Peter FitnessParticipant @peterfitness34857]

Never mind Richard, I know the feeling. The only reason I wear a watch is so I know what day it is, I’m not bothered by the time 

Peter.

[Colin BishopModerator @colinbishop34627]

These days it’s the year that bothers me….

 

Any luck with the suggested answers Leslie?

 

Colin

[DickyDParticipant @dickyd]

I think it is a bit dangerous to tell Leslie to start changing motors etc. when we dont know what sort of setup he has in the boat and we dont even know what boat he has.

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