https://tstage9.wixsite.com/nyc-modeling
Time...It marches on...without ever turning around to see if anyone is even keeping in step.
QUOTE: Originally posted by tstage Thanks, Chuck! I'm always learnin' sumpin' new about railroading. [:)] Tom
Dr. Frankendiesel aka Scott Running BearSpace Mouse for president!15 year veteran fire fighterCollector of Apple //e'sRunning Bear EnterprisesHistory Channel Club life member.beatus homo qui invenit sapientiam
QUOTE: Originally posted by linmark All, I've been into RC Airplanes for 15 plus years. I can't remember a time when so much was given so freely.
One other thing to mention is right behind a driving axle would normally be the rail-washers to wash the sand off the rails so the train doesn't have to run thru all of the sand. Generally, only the last engine would "wash" the rails.
Someobdy else can go deeper into the subject.
dingoix...I believe your refering to the rear or reverse sanders.. There is a sand nozzel at the front as well as the back of the wheel set, Perhaps what your refering to is a rock guard, a small plate or rubber flap, It does look like a wiper come to think about it.
furthering todays class Sanders 101..into the 80s....LOL.
To operate the sanders by hand, the air valve handle can be pushed forward or backward, depending on which way your going so the proper leading sander will operate. Can also be air or electricaly activated.by a valve called a sander relay, releasing air pressure blowing sand out of the sand box down the line to the wheel set..Just like a sand blaster would, but just a trickle of sand.
I only know diesel locomotives, when MUed togather, the sander hose is one of the three hoses on each corner of a frieght unit, passengers have four hoses (signal control hose).
The sanders can be actuated in different ways,
If a wheel slip light come's on they automaticaly activate, for traction
Engeener may feel the need and apply sand due to his experience, increased traction powering up, pulling grades ect
Emergency braking, if he throws the automatic brake valve lever into emergency, or if a brake pipe (main train line hose) fails, quickley dumping air pressure in the train, the brakes set up and the sanders activate. increasing brakeing effort and reduceing wheel slip
The locomotive inspector will operate the brake valves through various applications, before releaseing the unit from the shops ready track (outbound lead), the last check was an emergency application setting up all the units MUed brakes and a visual was performed noting that all sander functioned
If a sander is not operating and the wheel spins, the tread can become in a since molted, tread will have a spalling or rippling effect, this is glass hard when turning the degfective wheel on a tread lathe.
If the wheel sides it will wear a flat spot on the tread, condemmable at approx three inches. ever hear a trains wheel go whop....whop....whop...down the track....flat spots.
Colorado Front Range Railroad: http://www.coloradofrontrangerr.com/
tstage wrote:John, Yes, I was strictly referring to American steamers and diesels. Wow! That's quite the unusual (for me) steamer you have pictured there, John. You mentioned that the second to the last pic is a pre-production model and that you are awaiting it's arrival. What's the name of that particular locomotive and which manufacturere is coming out with it? Thanks. Tom
Tom,
Sorry, just read your post. The reply is a bit late.
As Mark wrote it is a Garratt AD60 class NSWGR. A pair of them actually. That's some wheels! 4-8-4+4-8-4 & 4-8-4+4-8-4.
To answer your question Google "Eureka Models". or http://eurekamodels.com.au/