[Rob Russo]

This is probably common knowledge, but this chart quickly shows the total number of laps in a 20-minute race.

Find your lap time between two of the numbers and use the lap count of the faster time above it.

laps   time (to nearest tenth second)

23      0:52.2
22      0:54.6  
21      0:57.1  
20      1:00  
19      1:03.2  
18      1:06.7  
17      1:10.6  
16      1:15  
15      1:20  
14      1:25.7  
13      1:32.3  
12      1:40  
11      1:49.1  
10      2:00  
9        2:13.3  
8        2:30  
7        2:51.4  
6        3:20  
5        4:00 
4        5:00

In the interests of having to think less, drive more...

[Michael Martin]

I like that idea.


* I didn't read the full title. Sorry

But for me I have a very simple calculation that I can do on my phone.


For 20 minute race

1200 ÷ (lap time in seconds)

eg 1 minute 45 seconds is 105 seconds

1200÷105= 11.43

I always round up to be safe so its 12 laps.



For 60 minute race

3600 ÷ (lap time in seconds)

eg 1 minute 45 seconds is 105 seconds

3600÷105= 34.29

I always round up to be safe so its 35 laps.


To work it out for different length races

(Race length in minutes) x 60= race length in minutes
÷(lap time in second)
= Number of laps


The to work out your fuel
fuel per lap x number of laps

I HIGHLY! recommend sidekick and use the fuel last lap feature
https://www.racedepartment.com/downloads...ick.11007/

[Russell Sobie]

Mine is the easiest. Download and install this app: https://www.racedepartment.com/downloads...uel.15424/

Click the arrows until the Range is in time.

Do 2-3 laps at your typical race pace.

Adjust fuel so that your range is 20/60 minutes+your typical lap time. Then add one more liter if the car/track combo is likely to have some offroading on the first lap. If you know what I mean.

[Matteo Venuti]

That app saved me a lot of times, expecially yesterday in the De Tomaso
Having the consumption, remaining laps and liters/lap almost in real time is really really good, mainly for people that usually put the wrong amount of furl before the race, or for the "How many liters" guys

[Michael Martin]

Didn't know about that app!

[Rob Russo]

Saved me, too, while trying to conserve gas in the Ford Coupe Legend and watching "liters required" change from  +1.3  to  -.5 by the last lap.
Very cool!

[Rob Russo]

Updated the Quick Lap Chart to include 1-hr races.
It will help you go faster...

[Matic Kadivec]

I like that idea.


* I didn't read the full title. Sorry

But for me I have a very simple calculation that I can do on my phone.


For 20 minute race

1200 ÷ (lap time in seconds) 

eg 1 minute 45 seconds is 105 seconds

1200÷105= 11.43

I always round up to be safe  so its 12 laps.



For 60 minute race

3600 ÷ (lap time in seconds) 

eg 1 minute 45 seconds is 105 seconds

3600÷105= 34.29

I always round up to be safe  so its 35 laps.


To work it out for different length races

(Race length in minutes) x 60= race length in minutes
÷(lap time in second)
= Number of laps


The to work out your fuel
fuel per lap x number of laps

I HIGHLY! recommend sidekick and use the fuel last lap feature
https://www.racedepartment.com/downloads...ick.11007/

If you want to calculate the required amount of fuel, you have to add the overtime (+1 lap). 

For example, if you have 20 minute race on Nordschleife and your laptime is let's say 6min 40s, there is a chance you will do 4 laps in a race as you will finish the third lap before 20 minute timer ends. 

Not sure how that is implemented in app. 

[Rob Russo]

Updated to include 30-min races, becoming more popular as of late.
The time represents the cut-off before an extra lap would be started.