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Old 11-04-2018, 09:59 PM   #61
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Does it do that without the coach attached. If yes try it without the tender and coach. If it still does it something must be binding on the loco. I had the loco hundreds of years ago and it went round 1st rad curves like a rocket.
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Old 11-04-2018, 10:38 PM   #62
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Is the drive cog rubbing against the chassis?
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Old 11-04-2018, 10:45 PM   #63
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Good point MG. Does it slow down in both directions. Cog might be a bit off side or the slot in the paxolin pickup plate too narrow.
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Old 13-04-2018, 08:31 PM   #64
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OK good suggestion lads, the other way round, it does not do it. Runs great!
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Old 13-04-2018, 10:35 PM   #65
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Are the wheels and gears wormed onto the shafts or are they just push fits?
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Old 14-04-2018, 02:01 AM   #66
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looks as though it's running pretty good on the straight. Often the problem with bends is with long trains where the drag of carriages becomes more, but this isn't the case here. I think there's something catching/rubbing with the running gear. I'd be tempted to remove the bodywork, remove the motor and push it around by hand, at the same time getting up close and personal with your eyes. Hopefully you'll be able to work out exactly where it's catching then. If it doesn't catch at all doing that, then look at how the motor itself is located.

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Old 14-04-2018, 02:34 AM   #67
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The worm part is the spirally cog thing attached to the motor itself. This turns a cog on the wheels with squed teeth to match the worm which will be mounted on a wheel axle. These cogs are normally a tight to very tight interference fit (push fit). It is a possibility that this cog is gently rubbing on the locos chassis frame (Or the pick up frame under it) when the loco goes round curves, so the cog may need slightly adjusting (Check the pick up plate isn't lose first) on its axle. It also could be that the wiper pickups are pressing too hard on the wheels and forcing the cog sideways into the chassis frame which may be more noticeable on curves. (It did not seem the case that the pickups were not making contact as the loco would be more trying to stall in a more jerky fasion. This looked more like the loco wheels or gears were rubbing on something, but I maybe wrong).
Check that the wheels themselves are clean.
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Old 16-04-2018, 10:08 PM   #68
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OK this is peeing me right off. Clockwise as in the video its struggling. Anti clockwise it goes like a rocket!

I've stripped it down to the chassis, motor and 6 wheels and it still does it. I can't see anything rubbing. The wheels are gonna have to come off and be re set. Grrrrrr

Difficult to use one of those spacing thingies cos the chassis is in the way. Got a vernier though.
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Old 16-04-2018, 10:10 PM   #69
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Can’t see resetting the wheels will make any difference if it runs well in one direction. How is it in reverse?

Are the connecting rods OK. Are they binding when the loco goes round the curve. Is the front bogie and trailing truck swivelling ok.
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Old 16-04-2018, 10:13 PM   #70
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Haven't tried that
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