Driver CoachOscar 13:53 — consistency repeat what you found; Fernando 10:16 — T5 repeatability.
Race EngineerThe data supports gearing, top-speed and shift-point observations. It does not support a conclusion about which engine is stronger.
Your session at a glance
Oscar 13:53
37.843 slap 9
Main focusyour consistency
StrengthTurn 5 (T5) is already strong.
Clear
Fernando 10:16
37.789 slap 6
Main focusTurn 5 (T5)
StrengthTurn 4 (T4), Turn 3 (T3) and Turns 7 and 8 (T7+T8) are already strong.
Possible
Driver Coach
Rissington (KZ), 2 sessions. Quickest lap of the group is Fernando's 37.760 s. One priority each below, worth 0.101 s a lap.
2Oscar 13:53repeat itActionable
Repeat your best your lap
—already at your theoretical best
Next jobYour best lap is already close to your quickest possible lap. Great work.
Do thisYour logger puts that lap at 37.920 s. T3 (0.064 s) is too small on its own to chase — the target is landing the whole lap like that, not one corner. Run 9 laps chasing consistency, not a corner.
Target9 consecutive laps within a tenth of each other.
Keep doingKeep doing this: Turn 5 (T5) is already strong.
Your best lapyour logger's time
37.920 s
Where others were quicker their passes were
T4 — Fernando 10:16 by 3 tenthsbrakes earlier and more gently, not overloading the kart; leaves 3.2 km/h faster; carries 7.0 km/h more through the middle
T3 — Fernando 10:16 by 0.6 tenthsbrakes more gently into the corner; picks the throttle up more gently out of the corner; carries 4.4 km/h more through the middle
T7+T8 — Fernando 10:16 by 0.6 tenthsT7: brakes 4 m earlier; leaves 3.9 km/h faster; carries 3.8 km/h less through the middle; picks the throttle up harder out of the corner
solid sample · 9 clean laps
1Fernando 10:16driveActionable
Work on T5
0.10s a lapagainst your own best lap
Next jobYour best lap took 4.29 s through T5. On lap 3 you took 4.19 s. Oscar 13:53 was also quickest through here — 0.8 tenths quicker than you — so this corner is the biggest prize on both counts.
Why
braked more gently; carried 3.4 km/h more mid corner; exited 2.2 km/h faster
Do thisThrough T5, brake a little more gently — that's what carried more speed through the middle. Run 4 laps working on T5 and nothing else.
Target4.19 s or quicker through T5 on at least 2 of the 4 laps. You have done it once, so this is all about finding what you did and repeating it.
Keep doingKeep doing this: Turn 4 (T4), Turn 3 (T3) and Turns 7 and 8 (T7+T8) are already strong.
What you did differently
T5mediumyour quickest pass through this corner — lap 3 — braked more gently; carried 3.4 km/h more mid corner; exited 2.2 km/h faster
Usual lapreconstructed on the shared start line — your logger's own best is 37.760 s
37.868 s
↓ already driven
0.080 s
Your best lap
37.789 s (lap 6)
↓ still on the tableyour own laps · T5 0.101, T3 0.081, T2 0.063
0.245 s
Same lap, those sections as you drove them
37.544 s
Where others were quicker their passes were
T5 — Oscar 13:53 by 0.8 tenths
workable sample · 5 clean laps
The evidence
What your best lap did differently
Oscar 13:53
Your best lap was 0.643 s quicker than a usual one. This is where it came from.
T10.147 s
T50.139 s
T7+T80.133 s
braked harder
gave 1.7 km/h back in a mid-exit lift
T40.112 s
came off the power earlier
T60.062 s
braked more gently
exited 2.7 km/h faster
T30.051 s
Fernando 10:16
Your best lap (lap 6) was 0.080 s quicker than a usual one. This is where it came from.
T60.085 s
picked up speed more slowly off the corner
T7+T80.032 s
came off the power earlier
Fernando 10:16 quickestOscar 13:53 quickest
Each session's quickest run through each section. Every section is coloured by who went through it quickest, and the margin is printed beside it — 4 of 7 were won by more than 0.05 s, and the rest are marked as inside lap-to-lap noise rather than hidden.Best lap against best lap, every section, Fernando 10:16 as the reference — a bar to the right is slower than Fernando 10:16 there, a bar to the left is quicker, coloured by whose best lap it is (see the key above).
section
where
quickest, and by how much over the next
T1
0–102 m
Oscar 13:53 by 0.045 s — too close to call
T2
102–176 m
Oscar 13:53 by 0.044 s — too close to call
T3
176–278 m
Fernando 10:16 by 0.055 s
T4
278–527 m
Fernando 10:16 by 0.213 s
T5
527–645 m
Oscar 13:53 by 0.077 s
T6
645–735 m
Fernando 10:16 by 0.030 s — too close to call
T7+T8
735–913 m
Fernando 10:16 by 0.055 s
How the lap time is made, corner by corner
looking at Braking points, mid-corner, minimum, and exit speeds.
T3
Driver
Brake
Braking
Minimum
Drive out
Exit
Section
Fernando 10:16
39 m
+6.63
50.7
+3.08
74.0
5.924 s
Oscar 13:53
39 m
+8.55
46.3
+3.85
74.6
6.042 s
T4
Driver
Brake
Braking
Minimum
Drive out
Exit
Section
Fernando 10:16
42 m
+6.03
59.8
+4.82
114.6
7.816 s
Oscar 13:53
37 m
+8.89
52.8
+4.50
111.3
8.050 s
T7
Driver
Brake
Braking
Minimum
Drive out
Exit
Section
Fernando 10:16
51 m
+7.86
56.6
+6.84
90.0
6.635 s
Oscar 13:53
47 m
+7.86
60.5
+5.52
86.0
6.763 s
What the rows say
T3 · Oscar 13:53 — Fernando 10:16 carries 4.4 km/h more through the apex than you, and gains 0.118 s on you there.
T4 · Oscar 13:53 — Fernando 10:16 brakes 5 m earlier, carries 7.0 km/h more through the apex and leaves 3.2 km/h faster than you, and gains 0.235 s on you there.
T7 · Oscar 13:53 — Fernando 10:16 brakes 4 m earlier and leaves 3.9 km/h faster, though you carry 3.8 km/h more through the middle. It is worth 0.128 s to them through the section.
Where a driver is slower through the apex, the question to the driver is what is stopping them carrying more speed there?
Race Engineer
Verdict: The data supports gearing, top-speed and shift-point observations. It does not support a conclusion about which engine is stronger.
What the engine is telling you
Oscar 13:53
Oscar 13:53 is 3.1 km/h down on sustained top
reading Oscar 13:53 holds 130.1 km/h where Fernando 10:16 holds 133.2 km/h, and the two are not geared far enough apart for the sprockets to account for it.
what it means What is left is the engine, the drag, or the exit speed the kart arrives on the straight with. The corner-exit table below separates the last of those from the other two: a kart that leaves the corner slower and never catches up was never down on power.
test Read the corner-exit table for the corner before the longest straight. If the exit speeds match and the tops do not, run the two karts down the same straight together, from a rolling start at the same speed.
success If the gap opens on the straight from a matched start, it is the engine or the drag. If it does not, it was carried in from the corner and belongs to the driver's half of this report.
Fernando 10:16: nothing in the machine data separates this kart from the others by more than the measurement can resolve.
The sessions, as measured
Session
Circuit
Laps
Best
Peak speed
Shift point
Fernando 10:16
Rissington (KZ)
7
37.760s
135.0 km/h
13544 rpm (13088 to 13776)
Oscar 13:53
Rissington (KZ)
11
37.920s
131.7 km/h
13684 rpm (13210 to 13996)
Top end and gearing
Session
Sustained top
Peak
Gearing
Revs at sustained top
Rear sprocket vs Fernando 10:16
Fernando 10:16
133.2 km/h
135.0 km/h
—
—
reference
Oscar 13:53
130.1 km/h
131.7 km/h
103.6 rpm/km/h
13,478 rpm
—
Higher rpm per km/h is shorter gearing: more drive off the corners, less at the top end. Revs at sustained top is the same trade in one number — a kart well short of the others is not pulling what it is geared for.
Fernando 10:16 → Oscar 13:53: +16.59% final drive. the data measured a +16.59% final-drive change; no sprockets declared on either setup sheet to compare against
Corner exit, driver against driver
Corner
Fernando 10:16
Oscar 13:53
T2
81.3 / +0.70
82.9 / +2.14
T3
74.0 / +3.08
74.6 / +3.85
T4
114.6 / +4.82
111.3 / +4.50
T5
88.0 / +0.27
—
T6
84.7 / +0.47
85.2 / +0.61
T7
90.0 / +6.84
86.0 / +5.52
What this table says
Oscar 13:53 leaves T7 (3.9 km/h), T4 (3.2 km/h) slower than Fernando 10:16. The speed difference is the fact; the useful question is what is stopping the kart carrying more out of those corners, not whether the driver could simply go faster.
Exit speed in km/h, then how fast the kart accelerates in km/h per 10 m. Highlight = quickest out of that corner. This table is where straight-line time is won and lost. Where one driver is slower here, the useful question is what is stopping the kart carrying more out of the preceding corner.
The data supports gearing, top-speed and shift-point observations. It does not support a conclusion about which engine is stronger..
kart — 2 different karts recorded these sessions
driver — Oscar, Fernando drove these sessions
Machine log
Session
Kart
Top speed (km/h)
rpm per km/h
Shift rpm
Fernando 10:16
kart_sn3463
135.0
—
13544
Oscar 13:53
kart_sn3769
131.7
—
13684
2 different loggers recorded these sessions, so these are 2 different karts
Engine performance
Fernando 10:16 against Oscar 13:53, measured as observed powertrain pull — a powertrain comparison. Acceleration is timed across bands rather than differentiated sample by sample, and every figure is a median across independent pulls, not across samples.
There is not enough comparable data to say which engine is stronger.
By shifting. No difference in change-up recovery that clears its own scatter.
Confidence. Insufficient — this is a powertrain comparison, because engine identity not declared, gearing not declared, running weight not recorded, tyres not declared, conditions not matched or corrected.
Next test. Use the same driver, kart, sprockets, tyres, fuel load, gearing (declare front and rear teeth both times), total running weight (weigh both, driver included). Swap only the engine and run at least six clean laps. Success is a difference appearing at all that clears normal lap-to-lap variation.
Acceleration through the speed range
Speed gained per second, in km/h, against road speed — higher is pulling harder. Each point is the median across that band's own pulls: Fernando 10:16 3–14 a band; Oscar 13:53 4–23 a band. Not drawn — Fernando 10:16 40–50, 70–80, 110–120, 130–140; Oscar 13:53 40–50, 70–80, 110–120, 130–140: fewer than 3 pulls through there is no median. The shaded ranges are where the gap between the two clears normal pull-to-pull scatter — 5 bands of the 6 both engines reached. Everywhere else the two are level, and a crossing outside the shading is scatter, not a result.
Time through each speed band
SPEED RANGE
Fernando 10:16 TIME
Oscar 13:53 TIME
DELTA
DISTANCE DELTA
50–60 km/h
0.85 s
0.65 s
0.20 s Oscar 13:53
0.5 m
60–70 km/h
0.67 s
0.72 s
level
6.1 m
80–90 km/h
0.55 s
0.66 s
0.11 s Fernando 10:16
5.9 m
90–100 km/h
0.83 s
0.70 s
0.14 s Oscar 13:53
5.2 m
100–110 km/h
0.76 s
0.96 s
0.21 s Fernando 10:16
20.8 m
120–130 km/h
1.26 s
1.51 s
0.26 s Fernando 10:16
20.3 m
Not shown: 40–50 km/h, 70–80 km/h, 110–120 km/h, 130–140 km/h — too close to call.
Same on every row: confidence Medium.
Change-up recovery
SHIFT
Fernando 10:16
Oscar 13:53
3rd→4th
12,185→11,554 rpm, 0.20 s recovery
12,314→12,000 rpm, 0.20 s recovery
4th→5th
13,057→11,618 rpm, 0.20 s recovery
13,340→11,685 rpm, 0.20 s recovery
5th→6th
13,486→12,350 rpm, 0.20 s recovery
13,504→12,290 rpm, 0.20 s recovery
Same on every row: time difference 0.00 s level; outcome the same change, within its own scatter.
Down each straight
Zone
Length (m)
Entry Δ (km/h)
Gained (s)
Faster
Laps
Confidence
T4 exit
214
1.32
-0.041
not attributable
5 vs 9
low
engine identity not declared
gearing not declared
running weight not recorded
tyres not declared
conditions not matched or corrected
Evidence and method
Provenance for the two segments above: how each session drives, every corner’s full read, the lap-by-lap tables, and how each figure was measured.
Show the evidence and method
How each session drivesacross 5 shared corners · colours as on the track map
Evenly matched
There isn't enough of the lap exclusively about braking point to call it a habit either way. Most of what separated here separates more clearly on mid-corner speed, and is told there instead. 2 of the 3 corners needed are exclusively about it.
There isn't enough of the lap exclusively about braking hardness to call it a habit either way. Most of what separated here separates more clearly on braking point, and is told there instead. 1 of the 3 corners needed are exclusively about it.
There isn't enough of the lap exclusively about mid-corner speed to call it a habit either way. Most of what separated here separates more clearly on exit speed, and is told there instead. 2 of the 3 corners needed are exclusively about it.
There isn't enough of the lap exclusively about getting back on the power to call it a habit either way. Most of what separated here separates more clearly on exit speed, and is told there instead. 0 of the 3 corners needed are exclusively about it.
There isn't enough of the lap exclusively about exit speed to call it a habit either way. Only 2 corners on the shared lap showed a real difference in exit speed at all. 2 of the 3 corners needed are exclusively about it.
Corner profiles — the full read
Oscar 13:53 against Fernando 10:16 — T4
T4medium — Into T4, Fernando 10:16 starts the braking about 5 m earlier than you (42 m before the apex against your 37), and Fernando 10:16 slows more gently — 6.0 against your 8.9 km/h per 10 m. Through the middle Fernando 10:16 carries 7.0 km/h more — 59.8 against 52.8. On the way out Fernando 10:16 leaves 3.3 km/h faster (114.6 against your 111.3). Your own quickest pass through here moved the braking point to 39 m and left at 112.0 km/h. All told the corner costs you 0.23 s against Fernando 10:16 (8.05 against 7.82 s).
Oscar 13:53 against Fernando 10:16 — T3
T3medium — Into T3, you and Fernando 10:16 brake at the same point (about 39 m before the apex), and Fernando 10:16 slows more gently — 6.6 against your 8.6 km/h per 10 m. Through the middle Fernando 10:16 carries 4.4 km/h more — 50.7 against 46.3. On the way out Fernando 10:16 picks up speed more gently (3.1 against your 3.9 km/h per 10 m). Your own quickest pass through here slowed at 10.0 km/h per 10 m, carried 49.7 km/h through the middle and left at 77.3 km/h.
Oscar 13:53 against Fernando 10:16 — T7+T8
T7medium — Into T7, Fernando 10:16 starts the braking about 4 m earlier than you (51 m before the apex against your 47), both slowing at much the same rate (7.9 and 7.9 km/h per 10 m). Through the middle you carry 3.9 km/h more — 56.6 against 60.5. On the way out Fernando 10:16 picks up speed harder (6.8 against your 5.5 km/h per 10 m) and leaves 4.0 km/h faster (90.0 against your 86.0). Your own quickest pass through here carried 62.6 km/h through the middle and left at 90.1 km/h. All told the corner costs you 0.13 s against Fernando 10:16 (6.76 against 6.63 s).
Fernando 10:16 — the coached corners
T5medium — Into T5 you typically brake 96 m before the apex. Your typical minimum is 86.6 km/h. Your own quickest pass through here slowed at 4.3 km/h per 10 m, carried 89.6 km/h through the middle and left at 90.0 km/h.
Fernando 10:16 against Oscar 13:53 — T5
T5medium — Into T5 you typically brake 96 m before the apex. Your typical minimum is 86.6 km/h. Your own quickest pass through here slowed at 4.3 km/h per 10 m, carried 89.6 km/h through the middle and left at 90.0 km/h.
Sessions
Session
Class
Laps
Clean
Best lap (s)
Oscar 13:53
KZ2
9
9
37.920
Fernando 10:16
KZ2
6
5
37.760
How this was measured
every session here is analysed on the committed rissington geometry (geo_58d09a291f650ee6), so a corner number means the same thing for all of them and the same thing it meant in every other report at this circuit
Oscar 13:53
lap frames rejoined with the crossing sample shared between consecutive laps, so each lap spans n-1 intervals and its last sample sits exactly on its own timed length
the session begins 911 m and ends 911 m from the shared line, so those two part-laps cannot be closed and are not counted
Fernando 10:16
lap frames rejoined with the crossing sample shared between consecutive laps, so each lap spans n-1 intervals and its last sample sits exactly on its own timed length
the session begins 913 m and ends 1 m from the shared line, so those two part-laps cannot be closed and are not counted
Quickest through each section
"Where others were quicker" compares each driver's best pass through a section against another driver's best pass through the same section. It is a different measurement from the seconds at the top of the card, which are against that driver's own best lap — the two are not addable.
Section
Quickest
Margin (s)
Oscar 13:53
Fernando 10:16
T1
Oscar 13:53
0.045
3.824
3.869
T2
Oscar 13:53
0.044
3.113
3.157
T3
Fernando 10:16
0.055
5.239
5.184
T4
Fernando 10:16
0.213
9.827
9.613
T5
Oscar 13:53
0.077
4.109
4.187
T6
Fernando 10:16
0.030
3.617
3.587
T7+T8
Fernando 10:16
0.055
7.983
7.928
Every lap
Lap time in seconds, lower is quicker. Clean laps only — every lap this session was clean.