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Author Topic: mfa motor issues  (Read 6079 times)

Buster22

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Re: mfa motor issues
« Reply #25 on: June 06, 2015, 07:04:34 PM »

im using a multiplex europa nautic radio
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Buster22

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Re: mfa motor issues
« Reply #26 on: June 06, 2015, 08:14:18 PM »

so i switched to tank mode not having any issues with glitching now
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Buster22

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Re: mfa motor issues
« Reply #27 on: June 07, 2015, 05:30:27 PM »

so tried the boat out yesterday and the one motor blew the capacitor again
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NFMike

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Re: mfa motor issues
« Reply #28 on: June 07, 2015, 09:55:21 PM »

so tried the boat out yesterday and the one motor blew the capacitor again
If that motor is the one arcing a lot then it sounds like it may be faulty and the emfs produced are breaking down the capacitor. If I was going to persist with it I'd replace the suppressor cap (again) but also add a much higher value, say 1 microF (but not a polarity sensitive type like an electrolytic), capacitor in parallel to try and swamp some of the arcing.
Ideally I'd try a different motor though.

malcolmfrary

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Re: mfa motor issues
« Reply #29 on: June 07, 2015, 11:07:31 PM »

If that motor is the one arcing a lot then it sounds like it may be faulty and the emfs produced are breaking down the capacitor. If I was going to persist with it I'd replace the suppressor cap (again) but also add a much higher value, say 1 microF (but not a polarity sensitive type like an electrolytic), capacitor in parallel to try and swamp some of the arcing.
Ideally I'd try a different motor though.
I would give the commutator a really good clean and check the brushes before doing anything else at all, then check it on raw battery to see if the sparking gets cured.  If not, mend it with a new one, you will never be able to trust it.
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inertia

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Re: mfa motor issues
« Reply #30 on: June 07, 2015, 11:27:07 PM »

Check the flywheel diodes on the (new) P94. Sounds like you may have two of them to fix now. No known compatibility problem with that radio, but it is a pretty unusual one - at least in these parts.
As has been said, a motor transplant would probably save further heartache and expense.
DM
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Buster22

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Re: mfa motor issues
« Reply #31 on: June 08, 2015, 01:53:53 AM »

well i put the p94 in mode 4 not having any issues now
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malcolmfrary

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Re: mfa motor issues
« Reply #32 on: June 08, 2015, 10:10:41 AM »

If the motor is still sparking, it is a problem lying in wait for the future.  Minor sparking is fairly common. heavy sparking is damage being done.
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