Horses in Simutrans
Price and maintenance.
It wood be a good thing for Simutrans when prices and maintenance for vehicles,
buildings, etc are realistic in all eras and no cause of constant discussions.
Having a background for this will probably be helpfull and add to realism.
At present I have only one reference: 1906 horse-maintenance 9.125 d/carmile
and an average price of £ 30,-.
Via google I also see that having a horse will cost yearly $ 3000,-
or $ 250,- per month.
However, I think this is for a light hobby-horse, wich is eating a lot less
than a heavy working horse.
Another way is trying to calculate like:
Monthly cost in $ for: (2010)
stable maint 40
Total per month $ 430
A draft horse may work 4 hours/day (google)
Speed of a horse (trott) 14 km/hour can be maintained for hours.
Due to stops and traffic hindrance average speed is 60 % of trott-speed.
Simutrans is 24 hour-economy so you need 6 horses per car.(towed-vehicle)
A horse does per month: 30*4*14*0,6 km = 1008 km.
Cost per km: 430/1008 = 0,43 $/km in year 2010.
Since there are 6 horses needed per car: 6*0,43 = 2,58 $/car-km
Now you can see the reason why horses are replaced in transport.
They are simply to expensive.
How does this compare to the reference of 104 years ago?
For feasability reasons I use a simplified system for inflation.
I assume that inflation from 1750 till present is a lineair matter.
Inflation level 3%/year.
Assume income for labor in 1750 is 0,01 $/hour or $ 20 per year.
Inflation-correction gives for 2010: 20*1,03^260= $ 43522/year.
I think that is sufficient within acceptable borders.
In my Simutrans-math I simply replace $ by BCr.
If I calculate in the same way the value of $ 2.58 backwards to 1906:
Value in 1906 is: 2.58*0,97^104 = 0.109 $/ car-km
I need a conversion from £ to $
IMHO the value of the £ has been till ¬ 1960 quite steady compared to the $
From 1791 to 1960 it was allways around 1 £ = 4.5 $ (roughly)
At present it is £ 1 = 1 to 1.50 $
The reference in 1906 was 9.125d = 9.125/240*4.5 =0.17 $/car-mile or 0,106 $/km
In 1830 it would be: 2.58*0.97^280= 0.010728
In 1750 it would be: 2.58*0.97^260= 0.000936
From 1750 till 1830 is is rounded up 0.01 HCr
At present (2010) you buy a horse in the USA for $ 700,-
Same math as above gives in 1906: 700*.97^104 = $ 29.47
Horse-price=700*0.97^(2010-wanted year) HCr
Horses-maintenance: 2.58*0.97^(2010-wanted year) HCr/km (running-cost)
Edit: As long as there is no inflation correction in EXP.exe you will have to distinguish horses for eras.
In DRC every 25 years, starting in 1750, a new "type" of horse is available.