Max Velocity Values

generalmotors228 · Post by **generalmotors228** » Sat Sep 30, 2006 9:45 am

Hi,

I was wondering if someone can tell me the values of the Max Velocity setting in consist files for the following speeds:

90 MPH
75 MPH
70 MPH
50 MPH
40 MPH
30 MPH
5 MPH

Please use below as a template: -

MaxVelocity ( 34.42208 0.78490 )

Thanks in advance

GM228

champy · Post by **champy** » Sat Sep 30, 2006 10:11 am

http://steam4me.railpage.org.au/trainsi ... speed.html

Try this, it should go a long way to explaining exactly what you need

Jon

systema · Post by **systema** » Sat Sep 30, 2006 4:21 pm

I think if you multiply your mph by 1.61 this gives the the first figure you need in your template. The second figure relates to acceleration in some way and must be between 0 and 1.
O.5 is a good average setting for the second figure.

You only need modify the figures if your consist doesnt perform satisfactorily.
Don't forget if you do modify the figues this may alter the performance of other activites that use the same consist, so if you want a special case then copy and rename the consist then alter the figures.

You can check what the max velocity of the consist is in mph by dividing the first figure by 1.61.

(Not absolutley sure if 1.61 is correct as Im going from memory)

Mick Clarke

generalmotors228 · Post by **generalmotors228** » Sat Sep 30, 2006 7:41 pm

Not being great at the owl calculator can someone confirm that I have the correct settings below for the listed consist file speeds! I want the reduced speed to be more or less the same as the max speed so have this at 0.95 to represent 95% of the max speed!

90 MPH: -
MaxVelocity ( 54.1 0.95 )

75 MPH: -
MaxVelocity ( 45.1 0.95 )

70 MPH: -
MaxVelocity ( 42.1 0.95 )

50 MPH: -
MaxVelocity ( 30.8 0.95 )

40 MPH: -
MaxVelocity ( 24.6 0.95 )

35 MPH: -
MaxVelocity ( 21.58 0.95 )

30 MPH: -
MaxVelocity ( 18.5 0.95 )

20 MPH: -
MaxVelocity ( 12.34 0.95 )

5 MPH: -
MaxVelocity ( 3.08 0.95 )

tinsley · Post by **tinsley** » Mon Oct 02, 2006 9:11 pm

Hi GM

You have got them..nearly right..
Assuming 1 mile = 1.61km (1.609.. ) I get
5= 3.10
20= 12.4
30= 18.60
35= 21.70
40= 24.8
50= 31.00
70= 43.40
75= 46.50
90= 55.80

Have fun..

systema · Post by **systema** » Mon Oct 02, 2006 9:26 pm

I don't think its a straight calculation from MPH to KPH. The figure of 1.61 is concindentally similar to that conversion, but the mph need to be multiplied by 1.61 not divided, so 20 mph needs a figure of 32.2 in the consist file. The stream4me site explains it all in one of its sections.

Mick Clarke

generalmotors228 · Post by **generalmotors228** » Mon Oct 02, 2006 9:57 pm

systema wrote:I don't think its a straight calculation from MPH to KPH. The figure of 1.61 is concindentally similar to that conversion, but the mph need to be multiplied by 1.61 not divided, so 20 mph needs a figure of 32.2 in the consist file. The stream4me site explains it all in one of its sections.

Mick Clarke

20 MPH is around 12, 32.2 would equals about 52 MPH!

GM228

systema · Post by **systema** » Mon Oct 02, 2006 10:37 pm

Have just consulted the info

The first figure in the consist file is max velocity in meters per second.

So a first figure of 33 (m/s) converts to 71 mph (Multiply by 2.16) However the AE defaults to an efficieny of 75% so the max acheivable speed of the consist is 71 x 0.75=54 mph approx

The conversion factor is therefore 2.16x0.75=1.62

To calculate the required max velocity figure in the consist file you need to divide mph by 1.62 so your figures are correct.

Mick Clarke

tinsley · Post by **tinsley** » Tue Oct 03, 2006 1:36 pm

I thought I was being clever..when in fact I was just lucky..!!!

ianmacmillan · Post by **ianmacmillan** » Tue Oct 03, 2006 1:43 pm

Remember that if you have the google toolbar you can type the sums into it and it will act like a calculator.

It will also convert between miles and kilometres and most other units

systema · Post by **systema** » Tue Oct 03, 2006 4:01 pm

Thats really useful. I never knew that. Thanks

Mick Clarke