Train Dynamics

[Approach_Medium]

Hello;
I'm running TS2010 SP1.
Lately, I have noticed that the train dynamics seem to have changed.
For one, when a train is started from a dead stop with brakes released (Cab mode), I haven't been seeing the effect of taking up slack, as I had previously.
The train instead, just starts moving slowly ahead.
Prior to this, I recall the train would start slowly, move a few feet, then stop again. Only after a few more moments or after I increased the throttle from notch 1 to 2 would the train start moving ahead.

I have also noticed that it takes much less time for the brake cylinders to release than it used to.
It does not seem to matter which locomotives I am using. I am running trains of at least 50 cars.

Any ideas?

Thanks

FW

 

[cascaderailroad]

TRS2006

I put the dynamic brake handle in "Full" forward position, then release the brakes. After it slowly gets up to 2mph, I give it @ throttle Run 6...this slows my 2 mile long train down to 45 mph, on my BC-Kicking Horse Pass-Spiral Loops route, which has a 2% gradient. Run 8, in Dynamic braking will stop my train below 45 mph. Over 45 mph train braking are needed...or it just...won't...stop.
http://s525.photobucket.com/albums/.../?action=view&current=KickingHorsePassWIP.flv
http://www.youtube.com/watch?v=bQ7Ecs1GuTM

 

[jadebullet]

By train dynamics, he means train physics.


I will have to check that out. If that is truly the case man, I will be disappointed, as I love taking in the slack.

 

[cascaderailroad]

I have figured out how much slack action is in a Trainz, train, 4 mile long. I have tried to view it on an experimental flat route, and it is @ 4 grids, or well over 100 foot of slack action.

I guess the route has to be flat ?

 

[Approach_Medium]

By train dynamics, he means train physics.


I will have to check that out. If that is truly the case man, I will be disappointed, as I love taking in the slack.

Right. Physics. I was trying to think of the correct term, but it slipped my brain for the moment.

I'm going to have to do some more testing. It is possible that I just don't have the train at the same location where I experienced the slack or starting physics.

I'll post again with my results.

Edit: I think I was mistaken.
When I am on a grade, I have the physics I was looking for. On level track, the slack physics aren't nearly as pronounced.
It's been a while since I've been actually running trains!

FW

 

[Approach_Medium]

I put the dynamic brake handle in "Full" forward position, then release the brakes. After it slowly gets up to 2mph, I give it @ throttle Run 6...this slows my 2 mile long train down to 45 mph, on my BC-Kicking Horse Pass-Spiral Loops route, which has a 2% gradient. Run 8, in Dynamic braking will stop my train below 45 mph. Over 45 mph train braking are needed...or it just...won't...stop.
http://s525.photobucket.com/albums/.../?action=view&current=KickingHorsePassWIP.flv
http://www.youtube.com/watch?v=bQ7Ecs1GuTM

I'm a bit confused about the dynamic brake.
When I tried it on a fairly long freight down a grade of at least 0.5%, I could not see any effect due to the dynamic brake.
The train only began slowing when I put the main brake lever into the initial position.

I guess I need to read the manual on this

Edit: I just checked the TS2010 manual. The only reference to dynamic brake is the table listing key functions.

FW

 

[cascaderailroad]

Dynamic brake has 2 positions...if you give it throttle run 1 through 8, it backfeeds a measured ammount of electricity through the traction motors, trying to reverse, and slow the wheels forward dirrection. So intead of speed power...it provides braking power. The dynamic brake grids act like radiators, and are big resistors, which waste the electrical current, and fans blow through them, to disapate the heat generated by the backflow of current.

 

[Approach_Medium]

Dynamic brake has 2 positions...if you give it throttle run 1 through 8, it backfeeds a measured ammount of electricity through the traction motors, trying to reverse, and slow the wheels forward dirrection. So intead of speed power...it provides braking power. The dynamic brake grids act like radiators, and are big resistors, which waste the electrical current, and fans blow through them, to disapate the heat generated by the backflow of current.

How does one implement the dynamic brake in Trainz?
When I try to move the dynamic brake lever up while the throttle is at any position other then 0, it jumps right back to its off position.
I think I was able to get it to stick when the throttle is at 0, then after setting the dynamic brake, move the throttle up a few notches. So far, I have not seen any effect, but maybe I need to do some more experimenting.

Edit: Did some experimenting, and found the dynamic brake works fine. My problem was that I was not moving the throttle back to 0 before trying to apply the dynamic brake. I guess this is why sometimes I hear trains on the local CSX line throttle back, then throttle up again in quick succession. There is a 0.5 to 0.75 grade near me.

FW