RacingEngineering wrote:Also i have used your computations as a guide. Actually i am going to have not 20 Ariel Atoms but 20 Golfs, preferably Golf MK2 (good grip,engine,racing history). And that is why i have reduced a bit tire costs, kept the same fuel costs but increased salary. My computations:
30days/8 hours/20 cars
Fuel=144000GBP
Braking=36000GBP (you wrote for ariel but here we have golf, so cost will be even lower)
Tire=30000GBP (Golf, not Atom)
Car maintenance=15000GBP
Salary=10000GBP
Tax=20000GBP
Total costs=255000
Not bad,considering sales(53GBP per customer to reach break even) but more that 50% of costs come just from fueling.ABSOLUTE NONSENSE. If i could find a solution for that, it will gain me an advantage. Also have an advantage as a hidden demand for racing in car that you don't own and are able to crash.
Im trying to do the math the reverse way, correct my math where needed.
Fuel: (Seems roughly sensible)
144000/30 = 4800GBP of fuel per day
4800/20 = 240GBP per day per car
240/8 = 30GBP per car per hour
Braking: (Seems roughly sensible)
36000/30 = 1200GBP of brakes per day
1200/20 = 60GBP of brakes per day per car
Tires: (This seems very short)
30000/30 = 1000GBP per day
1000/20 = 50GBP per day per car
Car maintenance (broken things + fluids) - (This seems short)
15000/30 = 500GBP per day
500/20 = 25GBP per day per car
Salary (This seems very short as marshals, and safety crew are needed at a minimum)
10000/30 = 334GBP per day
344/8 = 41$ per hour
Tax=20000GBP
Dunno how taxes are on that side of the pond.
Driving slots:
Per day/month = 160/4800 participants
More realistic tire estimate:
268GBP per set
30/2 = 15 sets of tires per car per month (assuming a set lasts 2 days, one set lasts me 7ish hours at 700GBP/set street tires)
15*20 = 80400GBP per month for tires
More realistic personal estimate:
(minimum wage 6.50GBP/H for everyone but medics whole at the lowest base are 7.51GBP/h)
For a 3 mile track:
Marshal crew 5 people = 260GBP/Day 7800GBP/Month
Medical crew 2 people = 120GBP/Day 3605GBP/Month
Recover crew 2 people = 104GBP/Day 3120GBP/Month
Race control 2 people = 104GBP/Day 3120GBP/Month
Mechanics for car review/fixes between sessions 2 people = 104GBP/Day 3120GBP/Month
Total: 792GBP/Day 23760GBP/Month
So by my still conservative estimate another 64160GBP per month is needed for the base calcs which is another 13.37GBP per person per session bringing the total to 66.37 per person.
I have a feeling salaries could double/triple what I have said easily, especially for mechanics and medics.
At this point you haven't taken the cost of the vehicles, vehicle prep (roll cages, fire extinguishers, 5 point harness), safety equipment, utilities, personal benefits (insurance,vacation,health), track insurance, track, and track maintenance into account.
You are thinking you will fill sessions every day of the month all day, while people are normally working which is highly unlikely.
If the track rental cost 5000GBP per day thats an extra 31.25 GBP/session.
If you want to make 1 dollar profit per session that 4800$ per month or 57600GBP/year before taxes.
So if everything was perfect and cheap it seems to be at LEAST 98GBP/per session for the driver, and that is still ignoring some expenses.
A few other thoughts:
You will have at least 6 cars totaled/severely damaged per year.
Cars will get trashed quickly because the driver has no "skin" in it, or you lessen the people doing it because if they wreck it and have to pay 2000+GBP for a replacement car.
Weather will not cooperate, causing canceled events.
And realistically - have you been karting at a kart center with new people? They drive karts into each other or walls at full speed because they don't know what they are doing. Almost like they have never driven a vehicle before.