Torpedo423
Steam Forever
I recently downloaded one for trains, and I can see some differences, but what exactly is a "tunnel motor"?
What exactly is a tunnel motor?
- Thread starter Torpedo423
- Start date
cascaderailroad
New member
It has low, truck level air intakes, so as to not draw in tunnel roof exhaust gas's.
In some very long tunnels, regulations require engineers doning oxygen masks, so as to not be overcome by diesel exhaust & CO2. Especially for the rear end helper locos, shoving on the rear, they get all the 2nd hand smoke, and have their windows shut.
In the CP-British Columbia-Spiral Loops-Kicking Horse Pass twin tunnels, a long slow uphill trains head end loco can throw off enough heat and exhaust, that it can cause the overheating and "shut down" of locos further back in the consist.
http://i525.photobucket.com/albums/cc339/cascaderailroad/PRR3.jpg
http://s525.photobucket.com/albums/.../?action=view¤t=KickingHorsePassWIP.mp4
In some very long tunnels, regulations require engineers doning oxygen masks, so as to not be overcome by diesel exhaust & CO2. Especially for the rear end helper locos, shoving on the rear, they get all the 2nd hand smoke, and have their windows shut.
In the CP-British Columbia-Spiral Loops-Kicking Horse Pass twin tunnels, a long slow uphill trains head end loco can throw off enough heat and exhaust, that it can cause the overheating and "shut down" of locos further back in the consist.
http://i525.photobucket.com/albums/cc339/cascaderailroad/PRR3.jpg
http://s525.photobucket.com/albums/.../?action=view¤t=KickingHorsePassWIP.mp4
Last edited:
norfolksouthern37
what's a normal map?
a tunnel motor is designed to operate better in a tunnel.
for instance, an SD40T-2 is an SD40-2 with a special intake section on the rear that draws air from an area just at the walkways. the typical SD40-2 draws its engine cooling air from a higher area. in a long tunnel the 'tunnel motor' intake is beneficial because the area near the top becomes hot with exhaust and heat from the radiators and the 'tunnel motor' can draw air from below. this keeps the engine from overheating and shutting off due to a safety measure built into the locomotives. after all, the train cant go anywhere if the engines shut off.
for instance, an SD40T-2 is an SD40-2 with a special intake section on the rear that draws air from an area just at the walkways. the typical SD40-2 draws its engine cooling air from a higher area. in a long tunnel the 'tunnel motor' intake is beneficial because the area near the top becomes hot with exhaust and heat from the radiators and the 'tunnel motor' can draw air from below. this keeps the engine from overheating and shutting off due to a safety measure built into the locomotives. after all, the train cant go anywhere if the engines shut off.
legolistic
also a rubiks cube fan
Before the tunnel motor was made, A train would go through the tunnel for a while, saying that it creates so much smoke, which would cause the engines begins the lead engine to shut down.
The tunnel motor and "Baby" tunnel motors (GP15-1) had their air intakes relocated to just above the frame.
The tunnel motor and "Baby" tunnel motors (GP15-1) had their air intakes relocated to just above the frame.
norfolksouthern37
what's a normal map?
no its not so much the smoke as it is the heat. those intakes pass air over the engine cooling radiators on the rear of a locomotive. if you pass hot air in there obviously it wont do much cooling. locomotives have a shut off feature that will cut them out when they get too hot so as not to damage them. so when they got hot from being inside a tunnel pulling in excess amounts of heat they shut off.
SantaFebuff
That's So Trainz Forum
How come we don't have tunnel motors today?
Have certain designs changed?
Cheers,
Joshua
Have certain designs changed?
Cheers,
Joshua
norfolksouthern37
what's a normal map?
basically yes. body and radiator designs have pretty much made this a thing of the past.
Sadly yes. If you see one now, take a picture/video. It may be the last time it will be scene in one piece
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