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spring loadede clacks

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fizzy	13/08/2015 23:38:20
1860 forum posts 121 photos	ive just finished 2 nitrile ball clacks fot my loco but saw spring loaded ones on (i think) pansy - anyone tried this type??
fizzy	17/08/2015 23:47:16
1860 forum posts 121 photos	ping!
Windy	18/08/2015 01:03:31
910 forum posts 197 photos	Would like to know if spring loaded OK on laid over stainless ball valve pump and burner feed pumps on the flash steamer.
Clive Hartland	18/08/2015 07:23:57
2929 forum posts 41 photos	Is the spring to stop them ' Fluttering' that's a nice word aint it! Relying on back pressure may not be enough so it needs spring loading? Clive
Chris Gunn	18/08/2015 09:53:10
459 forum posts 28 photos	I have always used a light spring for my traction engine clacks, albeit a slightly bigger size than for a 5" loco. I felt that the spring helped to keep the ball under control over the top of the incoming port, and stopping it moving sideways and blocking the outgoing port. However Gordon Smith wrote an article in January this year on making clacks without a spring, keeping the ball above the hole with a sleeve, without a spring. This is worth a look. Chris Gunn
julian atkins	18/08/2015 10:49:42
1285 forum posts 353 photos	hi nigel, ive never come across spring loaded check valves on miniature steam locos and certainly not by LBSC other than for mechanical lubricator pumps. a properly made steam check valve shouldnt need a spring. ive got a few fitted of 'inline' type in the horizontal position. they have never caused any problems. cheers, julian
fizzy	19/08/2015 17:46:55
1860 forum posts 121 photos	thanks all - I have made lots of clacks over the years, none with a spring and all worked well - seems like its a mixed bag

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