sluggish running

This topic has 5 replies, 3 voices, and was last updated 22 September 2019 at 19:47 by David Bothwell 1.

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22 September 2019 at 16:23 #430010
David Bothwell 1
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@davidbothwell1
My locomotive is a piston valved (two and a half inch Pacific) I have had it running (and not) on various sessions, I think the locknuts somehow moved and caused problems. At present the loco is running ( in full forward gear) but only for a short burst and petering out in a sluggish way. Could this be caused by uneven opening of the valves? Any suggestion gratefully accepted!
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22 September 2019 at 16:23 #33454
David Bothwell 1
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@davidbothwell1
loco runs on air, but sluggish
22 September 2019 at 17:42 #430013
Nick Clarke 3
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@nickclarke3
Does the loco seize up and stop or does it just 'run out of puff' with everything still free to turn?
22 September 2019 at 17:55 #430019
David Bothwell 1
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@davidbothwell1
Thanks for the reply (Nick) It doesn't seize up just doesn't run as long as it did, Previously the engine has run almost as long as the compressor applied air
22 September 2019 at 18:56 #430030
Bazyle
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@bazyle
'almost' as long? it shouldn't falter if the compressor is supplying air. Unless it is a very very small compressor so the tank runs out.

It sound like it has something loose, perhaps in the valve gear, that moves out of place and has been getting looser.
22 September 2019 at 19:47 #430039
David Bothwell 1
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@davidbothwell1
Thanks for the reply, I will check it out in the morning
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sluggish running

sluggish running

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