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Author Topic: Points  (Read 975 times)

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Offline daedalus

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Points
« on: September 04, 2012, 12:23:29 PM »
As the forum is the font of all N gauage knowledge, I hope someone can help? and this is in the correct section.

I have 3 ovals of track connected by points, and have 3 locomotives a class 37,47 and 57 at present. My class 47 derails when crossing one particular set of points in either direction, but none of the others do.

look forward to hearing from you.

Thanks
Geoff

Offline Dock Shunter

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Re: Points
« Reply #1 on: September 04, 2012, 12:30:29 PM »
My class 47 derails when crossing one particular set of points in either direction, but none of the others do.

look forward to hearing from you.

Thanks
Geoff

Hi Geoff.....
Is your Class 47 47 404 "Hadrian" by any chance...? as the gear housing on some of these was a little too low and caused derailments on points.

Offline daedalus

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Re: Points
« Reply #2 on: September 04, 2012, 01:36:54 PM »
Hello Dock Shunter

No unfortunately not it is "The Geordie", and the problem has only recently started, I'm at a loss!

Thanks
Geoff

Offline Sprintex

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Re: Points
« Reply #3 on: September 04, 2012, 01:39:37 PM »
Run it through the points slowly and watch for any of the wheelsets lifting, that will tell you where the problem is. Also have you checked the back-to-back of the wheels as one set may have got 'pinched' and now be too narrow?


Paul

Offline Jfheath

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Re: Points
« Reply #4 on: October 01, 2012, 06:26:09 PM »
This may help - the reason why my Mallard was derailing sometimes.  Back to back measurement slightly too large.  When the left hand wheel in the picture was against the guide rail, the right hand wheel was hitting the apex of the frog.  If the wheels / loco were just a little over to the left, the loco was perfectly happy, so it derailed only occasionally.
« Last Edit: October 01, 2012, 06:27:58 PM by Jfheath »

Offline Flakmunky

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Re: Points
« Reply #5 on: October 07, 2012, 04:10:35 PM »
+1 on the Class 47 gear housing fouling... I had this on a Uni of Leicester... File the gear housing down a little...
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