Subject:
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Re: Repairing 12v train motor
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 17 Apr 2002 15:41:19 GMT
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Viewed:
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619 times
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Reinhard "Ben" Beneke wrote:
> In lugnet.trains, Laurent Gerard writes:
> > Hello Jan-Albert,
> > I have also 3 engines 12V that are OUT, I also have noticed simmillar
> > problem as you have about the gear on axle that is being damaged by the
> > friction. This is the weakest link in the power transmission chain.
> >
> > As to replace the gear, I am also in the expectation of a possible
> > solution, isn't it possible to also make new ones on the CNC lathe ?
> I think that would overstep easily the worth of the whole 7865 motor...
Not for me at least...
If anybody knows exact specs of the gear and could find a way to replace
them I'd happily run a few dozen... all I need to pay for is used material
and a few free weekends, which is a good deal IMHO :) (BTW I noticed later
motors use some kind of zinc cast for the gears, I'd make them in a weak
bronze so they'd last longer)
> Maybe you are lucky and the motor has been used for long time in only 1
> direction? If so, it might have wear on only one side of the gearwheels
> teeth'.
In my case it is totally shot, there's a gap in the entire gears, exactly
the diameter of the worm driving it. Like somebody let the motor run while
holding the wheels still.
--
Jan-Albert "Anvil" van Ree | http://artsen.vanree.net
VanReeDotNet IT Solutions | http://www.vanree.net
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Message has 1 Reply:
 | | Re: Repairing 12v train motor
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| (...) I have a MIB service pack 12v motor, never opened, that I'd sacrifice to the cause of getting good spares made up. Presumably the parts in it once the cover was ripped off, would be as dimensionally accurate as one could hope for short of (...) (23 years ago, 17-Apr-02, to lugnet.trains)
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Message is in Reply To:
| | Re: Repairing 12v train motor
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| (...) I think that would overstep easily the worth of the whole 7865 motor... Maybe you are lucky and the motor has been used for long time in only 1 direction? If so, it might have wear on only one side of the gearwheels teeth'. At least I do own (...) (23 years ago, 17-Apr-02, to lugnet.trains)
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