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| | |-+  N scale Spectrum 2-8-0 binds - downhill only
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Author Topic: N scale Spectrum 2-8-0 binds - downhill only  (Read 438 times)
kcs114

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« on: June 21, 2018, 10:59:41 AM »

I have a first generation Spectrum N scale 2-8-0 that runs like a Swiss watch on the level and uphill. But going downhill with ten cars and a caboose behind it, it has a very jerky motion that must be a bind because it is in sync with each revolution of the wheels. When I put it on Bachrus rollers or upside down in a cradle, there is no bind. I checked the clearances in the rods and valve gear, and they appear to be OK. The fact that this only happens when going downhill, especially on my steeper (3.85%) grades has me stumped.
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hminky


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« Reply #1 on: June 21, 2018, 11:46:59 AM »

I have a first generation Spectrum N scale 2-8-0 that runs like a Swiss watch on the level and uphill. But going downhill with ten cars and a caboose behind it, it has a very jerky motion that must be a bind because it is in sync with each revolution of the wheels. When I put it on Bachrus rollers or upside down in a cradle, there is no bind. I checked the clearances in the rods and valve gear, and they appear to be OK. The fact that this only happens when going downhill, especially on my steeper (3.85%) grades has me stumped.
Yeah, that is what worm geared steam locomotives do going downhill.

Always have always will.

Harold
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