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porter 0-4-2 running problem, need fixer
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 Posted: Fri Apr 26th, 2013 12:26 pm
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madmike3434
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I have a bachmann on30   0-4-2 porter that i cannot get to run smooth. 

 I cleaned the 6 foot test track 3 times.   I cleaned the wheels with soft brass wire brush in my dremel. Oiled the side rods, oiled the sliders and joints. Used small screw driver to move the wheel contact brass wipers firmly on the wheels.

The porter is now moving a lot more less jerky and more smoothly, BUT, you can not change direction without the motor spinning and as soon as you touch it, off it goes.

Any ideas or would ship item to somebody who will repair it for a fee.    I can be contacted directly at

mike350 at rogers dot com

 

mike lynch.............aka           madmike3434

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 Posted: Fri Apr 26th, 2013 07:20 pm
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Paladin
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Hello Mr. Mad

Is the porter  DC. or DCC.

I have both, the difference being DCC has sound installed. There is no way of installing sound into the DC. model

May I suggest adding weight to the Porter, it may help with electrical contact from the rails.

Don.



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 Posted: Fri Apr 26th, 2013 08:21 pm
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madmike3434
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don, its just regular dc, its part of the first batch of porters to be released.  I orginally bought 3 of the 0-4-0 and 2 of the 0-4-2.

 

Its making contact with the rails and once i touch it it merrily saunters down the track. As soon as you stop it and try to reverse direction, it needs to be touched again.  I was running it backwards and forwards on 6 foot of track, most of the time i had to touch it on the nose or tail to get it moving.  Did this for about an hour.

Sometimes it will just sit there and spin the motor at full speed, its like the gear on the motor isn't making contact with the gears on the drive axles.  Therein lies the problem that needs to be fixed.

Tried to get it apart to have a look at the motor itself but wasn't sure how to do it so put it back together.  I was able to unscrew the plate and look at the drive gears but thats as far into the loco motor drive as i could get.

I sold this on ebay for $71 but cancelled the sale because doesn't run right.  Its my first pugwumps bros RR build, a porter with the giant c&s cinder bear trap stack and heavily weathered.

was hoping somebody on here would be a fix it guru that i could send it to too get repaired. ???

 

mike lynch

madmike3434

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 Posted: Sat Apr 27th, 2013 11:47 am
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Dan B
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Mike,
Hope you don't mind me butting in with my 0-4-2 porter problem since you got the thread going. I have a little of the same with the starting and changing directions. Mine also makes a pronounced " wump " on the right side down stroke. Its like its struggling to bring the driver around. I think I might try more weight and kill two birds with one stone.
Dan B

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 Posted: Sat Apr 27th, 2013 12:24 pm
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Bernd
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Mike & Dan,

Sounds like it could be cracked gears. My Bachman diesel switcher has cracked gears.

Bernd



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 Posted: Sat Apr 27th, 2013 02:28 pm
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madmike3434
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I may have a conversation with bachmann in PHILI PA and maybe send it back to them to repair if possible.   I can ship it too there from Canada for $12.00 small packet air.  Plus whatever it costs to return it.

I currently have it for sale on ebay USA again at a seriously reduced price down to $20 sold as is.  Would really like to fix it if possible.

If the gears are cracked and slipping it would do it constantly, once this loco gets started going it works great, just not without a little push. 

 If i could figure out how to get too the motor with its drive unit and gears without wrecking it, i would .  Any suggestions on how to pull it apart to examine the main motor unit ????

This will also help the other poster, don;t think additional weight is the problem. Undo the screw holding the access hatch to the gears, pop the front out of the axle channel and the rear too. Check the sliding movement of the side rods in and out of the pistons.    Make sure they are straight, use a q-tip to apply wd40 or other lubricant to the rods and all related pieces.  Mine started running better after i straightened one of the rods.  I just kept running it back and forth on 6 ft of track for close to an hour.  Was better than before but not perfect.

 

mike lynch

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 Posted: Sat Apr 27th, 2013 02:41 pm
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madmike3434
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tried to upload picture of loco , forgot how to.

 

mike

Last edited on Sat Apr 27th, 2013 02:41 pm by madmike3434

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 Posted: Sat Apr 27th, 2013 03:24 pm
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W C Greene
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I have never heard about the Porter's gears cracking, maybe you just ain't holding your mouth right!!LOL. Nope, if it runs nice with a push then it appears that there's a dead place in the motor's commutator. Look at the motor as the problem. The "whump" probem just could be a crankpin hitting the underneath of the cab floor on one side, on each revolution. You need to hold it upside down and put power to the motor and watch what happens. One of mine did the same thing. The cure is to (1) carve out some plastic so the crankpin doesn't hit, or (2) carefully bend the plastic cab floor up so it clears the crankpin. Back to the earlier problem...it also could be that the motor worm is not meshing properly with the drive gear train, the motor is held in place with a plastic "clip" assembly. Might just need to be pressed down until the clip catches.
All in all, these kinds of things are almost IMPOSSIBLE to diagnose on the net. It takes someone who knows how things work to look at the problem and offer a solution. Good luck with it all.

Woodie



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 Posted: Sat Apr 27th, 2013 04:05 pm
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CCSII
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Mike

I'm bidding on it, don't take it down!

Charley

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 Posted: Sat Apr 27th, 2013 04:21 pm
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Dan B
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Woodie,
Thanks for the advice. I will take a look at the crank pin, see if there is anything I need to clean up and go from there.
Dan B

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