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Western Railroad Discussion > Poppet Valve Gear on the S.P.Date: 04/09/20 16:23 Poppet Valve Gear on the S.P. Author: railroadbill Does anybody know if the Southern Pacific (or Santa Fe, for that matter) ever experimented with poppet valve gear (like Caprotti, for example)?
Date: 04/09/20 16:42 Re: Poppet Valve Gear on the S.P. Author: HotWater railroadbill Wrote:
------------------------------------------------------- > Does anybody know if the Southern Pacific (or > Santa Fe, for that matter) ever experimented with > poppet valve gear (like Caprotti, for example)? You should have asked this question over on the Steam Railroading board (Steam & Excursion). And,,,,,,,,,the answer is,,,,,,,,,,yes, someone probably knows. Date: 04/09/20 16:50 Re: Poppet Valve Gear on the S.P. Author: needles_sub railroadbill Wrote:
------------------------------------------------------- > Does anybody know if the Southern Pacific (or > Santa Fe, for that matter) ever experimented with > poppet valve gear (like Caprotti, for example)? Yes. The SP, UP, and the Santa Fe exprimented with these types of valve gear. Posted from Android Date: 04/09/20 16:53 Re: Poppet Valve Gear on the S.P. Author: Chico43 The AT&SF applied Franklin rotary cam poppet valve gear to 4-8-4 #3752.
Date: 04/09/20 17:12 Re: Poppet Valve Gear on the S.P. Author: Gulliver-Stuart Santa Fe 4-8-4 #3764 was built with Caprotti poppet valve gear, but was converted to Walschaerts valve gear in the early 1930's.
Stuart Date: 04/09/20 21:39 Re: Poppet Valve Gear on the S.P. Author: loleta Posting the question here seemed to work just fine, railroadbill. You got four replies in under an hour, and three of them were intelligent and helpful.
-L.F. HotWater Wrote: ------------------------------------------------------- > railroadbill Wrote: > -------------------------------------------------- > ----- > > Does anybody know if the Southern Pacific (or > > Santa Fe, for that matter) ever experimented > with > > poppet valve gear (like Caprotti, for example)? > > You should have asked this question over on the > Steam Railroading board (Steam & Excursion). > And,,,,,,,,,the answer is,,,,,,,,,,yes, someone > probably knows. Date: 04/10/20 14:02 Re: Poppet Valve Gear on the S.P. Author: Evan_Werkema AT&SF 3764 with Caprotti gear
https://i.ebayimg.com/images/g/ziMAAOSwWJZb2lWn/s-l1600.jpg https://digital.denverlibrary.org/digital/collection/p15330coll22/id/58331 https://i.pinimg.com/474x/56/af/6a/56af6a1f81dd49ce976944d3ece11ce5.jpg AT&SF 3752 with Franklin gear https://www.trainorders.com/discussion/read.php?11,4062213 https://digital.denverlibrary.org/digital/collection/p15330coll22/id/58306 https://digital.denverlibrary.org/digital/collection/p15330coll22/id/59305/rec/6 Always liked the way "Franklin rotary cam poppet valve gear" trips off the tongue... |