novak ballistic problem

[spindles69]

Not had this before.When car is stationary, motor dosn't work as soon as you give it a push it goes.Changed the sensor wire, still the same.Baffled. Any ideas.
Cheers Mick.

[MiCk B.]

Sounds like the sensor on the motor could be gone.

Do you have a way of checking the sensor on the motor?

The newer Novak speedo (Kinetic / Havok) have an option to check the motor sensor.

Or if you know someone with one of these:

http://pics.towerhobbies.com/image/s/sytm1007.jpg
(Senor check is the three lights on the right of the picture.)

MiCk B. :-)

Not had this before.When car is stationary, motor dosn't work as soon as you give it a push it goes.Changed the sensor wire, still the same.Baffled. Any ideas.
Cheers Mick.

[spindles69]

Cheers for that mick:thumbsup:, just had a look at my havoc pro sc and it has the sensor check option:). Will try that tommorrow.

[MiCk B.]

No problem.

It's a handy feature. Speedo needs to be powered up for it to work.

Go to the setting. Then rotate the pinion one 'click' at a time, the light on the speedo will change as you go from sensor to sensor (three sensors in total.)

At a guess you'll only get two of the three lights.

If it is the sensor this is what you need: http://www.shopatron.com/products/productdetail/part_number=NES5942/745.0.4.3

http://msdmodels.ie/zencart/images/NES5942.jpg
NES5942


MiCk B. :-)

[maineyak]

Not wanting to hijack the thread - but don't sensors seem ridiculously expensive compared to the overall price of a motor!

I have a brand new Speed Passion 7.5T which I stupidly connected the ABC wires up incorrectly and smoked. It just runs really slow now and then starts smoking again - well, it did last time I checked. Took it apart and there are no signs of shorting or burning on the sensor and no melted windings as far as I can see.

Now people tell me the first thing to try is a new sensor but inc. p&P that's going to cost me £30, and it still might not work....

When you can get a brand new motor for £50 (or s/h runner for £30) it just doesn't seem worth the risk. Anyone know where to get cheap sensors from to bring my paperweight back to life?

[dale]

Not wanting to hijack the thread - but don't sensors seem ridiculously expensive compared to the overall price of a motor!

I have a brand new Speed Passion 7.5T which I stupidly connected the ABC wires up incorrectly and smoked. It just runs really slow now and then starts smoking again - well, it did last time I checked. Took it apart and there are no signs of shorting or burning on the sensor and no melted windings as far as I can see.

Now people tell me the first thing to try is a new sensor but inc. p&P that's going to cost me £30, and it still might not work....

When you can get a brand new motor for £50 (or s/h runner for £30) it just doesn't seem worth the risk. Anyone know where to get cheap sensors from to bring my paperweight back to life?

If the motor is smoking a new sensor is unlikely to fix it. The stator is most likely fried. Try running it sensorless to confirm.

[maineyak]

Hi Dale,

Is the stator the main part of the motor with the windings in?

So if run it without the sensor lead and it still smokes that means its the stator then?

[imull]

If you need to push it it's almost certainly the speedo has blown. Disconnect the motor, get a dvm put it on resistance and check between the battery connections and the motor phases. Any that have a resistance of less than a few thousand ohms has blown.

[maineyak]

Speedo is fine and runs other motors ok.

[imull]

Sorry, was answering the OP not your question.

As said prevously if you've seen smoke it's gone. The stator is the windings but these can be shorted without showing burning. I have 3 SP cans that show this problem. The only way to check is with a milliohm meter, as the resistance is too low for a normal voltmeter to measure.

[spindles69]

Tried another motor on the car today.Same thing happening.Speedo is the problem.
Cheers everybody for your advice.