It is currently Mon Feb 10, 2025 12:09 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: Another "What is it?"
PostPosted: Sun Dec 08, 2024 1:45 pm 

Joined: Wed Aug 25, 2004 11:06 pm
Posts: 248
Location: Bendena KS
Seeing as my last "what is this post" resulted in uniting an obscure valve with a good home, I figured I would try again.

This one I am fairly sure is railroad related as it came from an estate auction of a lare railroad collection;

Thanks

Jason Midyette


Attachments:
rypn4.JPG
rypn4.JPG [ 97.54 KiB | Viewed 2451 times ]
rypn3.JPG
rypn3.JPG [ 122.4 KiB | Viewed 2451 times ]
rypn2.JPG
rypn2.JPG [ 114 KiB | Viewed 2451 times ]
rypn1.JPG
rypn1.JPG [ 112.61 KiB | Viewed 2451 times ]
Offline
 Profile  
 
 Post subject: Re: Another "What is it?"
PostPosted: Sun Dec 08, 2024 4:10 pm 

Joined: Thu May 24, 2012 1:37 pm
Posts: 2472
Looks like a speed governor or overspeed trip of some kind -- diesel mavens may know precisely. Spur kear drives the large brown gear, and the bevel gears rotate the vertical shaft that rotates the balls out agains the 'leaf spring' tension.

_________________
R.M.Ellsworth


Offline
 Profile  
 
 Post subject: Re: Another "What is it?"
PostPosted: Sun Dec 08, 2024 10:43 pm 

Joined: Wed Aug 25, 2004 11:06 pm
Posts: 248
Location: Bendena KS
That makes sense now that you mention it. I had just assumed that it was for some super low RPM use as there are no bearings, nor is the gear assembly sealed in any way.

That said, I did fine "Made By Pickering Governor Company, Portland, Connecticut", "450 REVS" and "467827" stamped on the round surface just above the balls and just below the gear box, so it is indeed a low RPM governor of some sort.

Jason Midyette


Offline
 Profile  
 
 Post subject: Re: Another "What is it?"
PostPosted: Sun Dec 08, 2024 11:38 pm 

Joined: Fri Aug 20, 2010 8:25 pm
Posts: 502
Yes, a "Flyball Governor" indeed. As the speed of the input shaft increases the "balls" move outward from the main vertical shaft and the "top cap" moves down (enabled by the leaf springs supporting the weights).

Then some kind of linkage/yoke picks up that motion and moves up/down to limit/lessen fuel flow. I suspect a small gear driven by the camshaft (or crankshaft) drives the "exposed'" lower gear (in photo #1) and a "fork" engages in the reduced diameter of the vertical shaft to move a fuel rack or carburetor "butterfly plate" and reduce/modulate the amount of fuel available.

All done without any electronic computer control.

Nice find, Kevin


Offline
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 5 hours [ DST ]


 Who is online

Users browsing this forum: 70000, co614, Google [Bot], Mark Hedges, MD Ramsey, wesp and 106 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: