Reworked locos for Railworks 3.

[g_nash]

The air tanks that are shown, that's for the air start for the engine?

No , they're the main reservoir air tanks for the train brake system

You can't start a diesel engine that size with an electric starter. Just curious.

Engine Start is basically push button computer controlled , Engineer does need to monitor some functions . AESS on GE can handle auto stop/start without human interventation for greenpower fuel savings .

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[arizonachris]

Interesting. So that means you have to have a whole crap load of batteries onboard? Would have thought air start would be easier. Semi trucks use it more and more. But, we're talking a lot less horses there.

[Kali]

Oh yeah, tons of batteries. But you've got a whacking great motor strapped to the engine already. And something would have to power the compressors, takes a while to charge the brake reservoirs as it is.

[MadMike1024]

Oh yeah, tons of batteries. But you've got a whacking great motor strapped to the engine already. And something would have to power the compressors, takes a while to charge the brake reservoirs as it is.

In the days of diesel caterpillar tractors, you lifted the valves on the main diesel engine, spun it up on the kicker motor with no compression until you had good oil pressure, then close the valves to start. Actually uses the stored inertia of the internal parts to give it the couple of turns it needs under compression to fire. Took very little power to spin the engine up. I don't know how it's done today with the bigger engines.

[g_nash]

Interesting. So that means you have to have a whole poop load of batteries onboard? .

The battery boxes are shown in the second group of pics posted by ATSF3814 , engineers side of loco under walkway as you step out the rear door ,, not that many needed .

Back on topic

Those who model should look closely at the geometery in the last pic of step 3 and maybe ask Derek some questions about running triangles into quads and what's considered best practise . Lots to learn from these pics for interested modelers.

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[micaelcorleone]

So one question:

If I watch start-ups of older engines on youtube, the engineers always go round the engine open a lot of hatches and operate various valves.
Do the newer engines like Dash 9, EvolutionSeries or SD70s still require this complex procedure or do they just press the start button now?

[Kali]

I'm quite curious what they're actually doing... I'm guessing they're opening a bunch of vents in the cylinders to make the engine turn over easier ( for SD series especially, given they're 2-stroke and don't have valves ) but then how do you get the engine started if you do that? no compression means no ignition. And... why? I can't think of a european diesel off the top of my head that needs that. I'd be surprised if the class 59 does too, and that's basically a SD40.

[Hawk]

I don't know if these will help, or if it's even what y'all are looking for, but....

Here's a video showing a guy starting a GP10.

http://www.youtube.com/watch?v=byVelKCIYyo GP10

Here's a video of what looks like a class instructor starting a 567 GM "E"

http://www.youtube.com/watch?v=bNR8dYzeCkc

[arizonachris]

Back when I was 17 I had a Bulltaco Motorcycle, 2 stroke. It had a compression release lever. Pull the lever give it one heck of a jump on the kick start, let out the lever and bang. Don't think they do that with these diesels, tho. Surprised the use batteries. Interesting stuff, Y'all! Thanks, Ed. Nice videos.

[micaelcorleone]

Changed the title of this thread because more default locos are in refurbishment.

Newest addition: Class 166 - http://railsimulator.blogspot.com/2011/07/ts2012-class-166.html

And an intersting comment on Facebookby a RSC team member: "All locos will have something done to them, however the lion share of time will be on the locos that need it most."

I really hope that at least the paintjob and the lights of the ES44AC will be reworked.

[BNSF650]

And also the shell it self. Hope they do fix it.

[micaelcorleone]

And also the shell it self. Hope they do fix it.

New post on Facebook by Derek: "Everyone has their own thoughts on which loco needs work and why. The great thing is that we have the power to update all models and while only a few will get updated for 2012 over time they all will get updated or replaced. d"

That's ok for me.

[krellnut]

Actually, two-stroke engines have exhaust valves, just not intake. They have a row of intake ports along the bottom of the cylinder, and when the piston travels below them, fresh air is pumped into the cylinder by means of a turbo or roots blower. This is called piston port. When fresh air is entering at the bottom, four exhaust valves are opening at the top. The fresh air helps push the exhaust out the top. EMD calls this; uniflow scavenging. Actually, EMD doesn't consider the roots blown version supercharged or anything, because this style of engine can't create a vacuum so air will enter the engine. It has to be forced in. The roots blower doesn't pressurize the cylinder before compression nearly as much as the turbo does. That's why EMD only considers the turbo model supercharged. Technically, engines don't suck in air, they create a vacuum, and atmospheric pressure rushes in to fill the void.

[Kali]

New post on Facebook by Derek: "Everyone has their own thoughts on which loco needs work and why. The great thing is that we have the power to update all models and while only a few will get updated for 2012 over time they all will get updated or replaced. d"

That's ok for me.

Call me cynical but the last time we had replacement default stock, we had to pay for it - not really default anymore! I will wait & see.

[Shortliner]

Call me cynical but the last time we had replacement default stock, we had to pay for it - not really default anymore! I will wait & see.

When was the last time we had to pay for a replacement of default stock?