What Engine Is This
- JBodenmann
- Posts: 3865
- Joined: Sun Oct 26, 2003 1:37 pm
- Location: Tehachapi, California
What Engine Is This
Hello My Friends
A friend gave me this print to hang in the shop. He was surprised that I didn't know what engine it was and what railroad. I'm sure that some of you would know. It's obviously a simple articulated engine but aside from that I haven't a clue.
Jack
A friend gave me this print to hang in the shop. He was surprised that I didn't know what engine it was and what railroad. I'm sure that some of you would know. It's obviously a simple articulated engine but aside from that I haven't a clue.
Jack
Re: What Engine Is This
With the number board on top of the headlight and shape of tender tank it is likely a great northern .
Z6 possibly ?
Z6 possibly ?
www.chaski.com
- Short Line Tom
- Posts: 60
- Joined: Tue Jan 03, 2017 9:35 pm
- Location: Römerberg/Germany
Re: What Engine Is This
Northern Pacific 4-6-6-4 #5118 (Z-6)
https://www.american-rails.com/4-6-6-4. ... allery]/3/ scroll down to pic #4
Cheers!
Tom
https://www.american-rails.com/4-6-6-4. ... allery]/3/ scroll down to pic #4
Cheers!
Tom
Re: What Engine Is This
What's with all the stuff on the front of the smoke box? The other one doesn't have that. It's much more easily recognizable as a challenger without it.
-
- Posts: 957
- Joined: Sun May 06, 2007 10:14 pm
- Location: St. Louis, MO
Re: What Engine Is This
air pumps.
Re: What Engine Is This
I’ve never understood why air pumps were mounted on the smokebox front vs. being mounted lower on the pilot deck or in front of the cylinders. Didn’t this prevent access to the smokebox, without having to disconnect the pumps? I know they had to go into the smokebox for monthly inspections.
Dan Watson
Chattanooga, TN
Chattanooga, TN
- Comstock-Friend
- Posts: 160
- Joined: Fri Apr 23, 2010 9:05 am
- Location: Sun Valley, California
Re: What Engine Is This
Dan, the smoke box door is rectangular between the pumps...
Re: What Engine Is This
I guess they only had to take the whole smokebox front off to pull the superheaters and flues.
Dan Watson
Chattanooga, TN
Chattanooga, TN
- Bill Shields
- Posts: 10581
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: What Engine Is This
ease of maintenance on the air pumps...right out in the open.
Many were mounted on 'swing out' frames so that you only had to disconnect air and steam line to pivot them clear of everything
Many were mounted on 'swing out' frames so that you only had to disconnect air and steam line to pivot them clear of everything
Too many things going on to bother listing them.
- JBodenmann
- Posts: 3865
- Joined: Sun Oct 26, 2003 1:37 pm
- Location: Tehachapi, California
Re: What Engine Is This
Hello My Friends
Thanks for all the info, I knew you guys would know. The main reason they put air compressors on the front of engines is that as they got bigger and the boiler diameter increased, there just wasn't clearance along side the boiler.
Jack
Thanks for all the info, I knew you guys would know. The main reason they put air compressors on the front of engines is that as they got bigger and the boiler diameter increased, there just wasn't clearance along side the boiler.
Jack
Re: What Engine Is This
Placement of the pumps on the front of the smoke box not only gave a more massive appearance to the front end, but also served other real engineering purposes. One was to get more weight on the front end of an articulated locomotive which often suffered from less than perfect weight distribution causing slipping of the front engine.
If a rigid frame steamer, the placement of pumps on the front end often helped to keep the driver axle weight within the maximum allowed for the track the locomotive operated on. A bit more weight on the engine truck was often welcome when axle weights were right at the maximum allowed for track and bridges. Often times just placing the pumps on the smokebox front could take the driver weight total down a bit and keep the crew pay scale at a lower rate for the life of the locomotive.
If a rigid frame steamer, the placement of pumps on the front end often helped to keep the driver axle weight within the maximum allowed for the track the locomotive operated on. A bit more weight on the engine truck was often welcome when axle weights were right at the maximum allowed for track and bridges. Often times just placing the pumps on the smokebox front could take the driver weight total down a bit and keep the crew pay scale at a lower rate for the life of the locomotive.
Re: What Engine Is This
There are a number of reasons to put the pumps on the front. In addition to what has been said, it facilitated them being run on superheated steam, if the loco had a front-end throttle. But what I was getting at was why put them on the front of the smokebox vs. on the pilot like many other modern engines had. I guess there wasn’t enough room in some cases.
Dan Watson
Chattanooga, TN
Chattanooga, TN