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+--- Thread: Quick lap chart - no calculator (/showthread.php?tid=9629)
Quick lap chart - no calculator - Rob Russo - 10-25-2020
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...
RE: Quick lap chart - no calculator - Michael Martin - 10-26-2020
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/sidekick.11007/
RE: Quick lap chart - no calculator - Russell Sobie - 10-27-2020
Mine is the easiest. Download and install this app: https://www.racedepartment.com/downloads/acrlfuel.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.
RE: Quick lap chart - no calculator - Matteo Venuti - 10-27-2020
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
RE: Quick lap chart - no calculator - Michael Martin - 10-27-2020
Didn't know about that app!
RE: Quick lap chart - no calculator - Rob Russo - 10-27-2020
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!
RE: Quick lap chart - no calculator - Rob Russo - 08-30-2021
Updated the Quick Lap Chart to include 1-hr races.
It will help you go faster...
RE: Quick lap chart - no calculator - Matic Kadivec - 08-30-2021
(10-26-2020, 04:41 PM)Michael Martin Wrote: 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/sidekick.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.
RE: Quick lap chart - no calculator (UPDATED) - Rob Russo - 06-03-2023
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.