MyChron Data Logging Rates & Sampling Guide

AiM MyChron Data Logging Rates & Sampling Guide

This guide explains how data logging rates work on the AiM MyChron 5 and MyChron 6, how sampling frequency affects data quality, and which settings to use for kart racing in New Zealand and Australia. Written by Aaron Harris — professional racing driver and race engineer with multiple international race wins including Bathurst and the Barcelona 24 Hour, and official AiM NZ data logging contact — at Harris Race Radios, the authorised NZ & AU importer and supplier of genuine AiM Sport products.

MyChron 5 vs MyChron 6 full comparison → | Ask Aaron for advice →

1. What is Data Logging Frequency?

Logging frequency (Hz) is how many times per second the MyChron records a data channel. Higher frequency means more data points, smoother graphs, and more accurate analysis — especially for fast-changing signals.

  • 1 Hz = 1 sample per second — adequate for slow-changing data like ambient temperature
  • 10 Hz = 10 samples per second — minimum useful for GPS position
  • 50 Hz = 50 samples per second — MyChron 5 maximum for most channels
  • 200–1000 Hz = MyChron 6 capability — reveals fine detail in brake, throttle, and RPM traces

Aaron Harris’s rule: log at the highest rate your storage allows for the channels you care about most. For driver coaching, brake pressure and throttle position at 200+ Hz reveals technique details invisible at 50 Hz.

2. MyChron 5 vs MyChron 6 Logging Capability

Channel MyChron 5 Max MyChron 6 Max
RPM 50 Hz 1000 Hz
GPS position 10 Hz 25 Hz
Temperature (WT, CHT, EGT) 10 Hz 20 Hz
Brake pressure 50 Hz 200 Hz
Throttle position (TPS) 50 Hz 200 Hz
Steering angle 50 Hz 200 Hz
Wheel speed 50 Hz 200 Hz

3. Why Logging Rate Matters

  • RPM at 50 Hz — shows general RPM trend but misses individual ignition events and micro-hesitations
  • RPM at 500 Hz — shows every ignition event, reveals misfires, hesitations, and limiter hits clearly
  • Brake pressure at 50 Hz — shows braking zones but misses initial bite and trail braking detail
  • Brake pressure at 200 Hz — shows exactly how the driver applies and releases the brake — the most useful coaching channel

4. Recommended Logging Rates for NZ & AU Karting

MyChron 6 — Aaron Harris’s Recommended Settings

  • RPM: 200–500 Hz
  • GPS: 25 Hz (fixed)
  • Brake pressure: 100–200 Hz
  • Throttle position (TPS): 100–200 Hz
  • Steering angle: 100–200 Hz
  • Water temperature: 10–20 Hz
  • EGT / CHT: 10–20 Hz

MyChron 5 — Recommended Settings

  • RPM: 20–50 Hz (maximum available)
  • GPS: 10 Hz (fixed)
  • Brake pressure: 20–50 Hz
  • TPS: 20–50 Hz
  • Steering angle: 20–50 Hz
  • Temperature: 5–10 Hz

5. How Logging Rate Affects Memory

Logging Rate Approx. Session Length (MyChron 6)
Low (10–20 Hz all channels) 6–8 hours
Medium (50–100 Hz) 3–4 hours
High (200–500 Hz) 1–2 hours

For a typical race day (4–6 hours of track time), medium logging rates are a practical balance. Download and clear sessions between rounds if using high rates.

6. Signs Your Logging Rate is Too Low

  • Jagged, stepped graphs in RaceStudio 3
  • Missing braking detail — brake trace looks like a block rather than a curve
  • Flat spots in RPM trace
  • GPS track map looks blocky or imprecise at corner apexes

Frequently Asked Questions

What logging rate should I use on my MyChron 6?

Aaron Harris recommends 200–500 Hz for RPM and 100–200 Hz for brake pressure, throttle position, and steering angle. GPS is fixed at 25 Hz. Temperature channels can run at 10–20 Hz.

Does a higher logging rate use more battery?

Marginally. The difference is small compared to screen brightness and Wi-Fi use. Reduce screen brightness and disable Wi-Fi between sessions rather than reducing logging rate.

Why does my MyChron 5 data look less smooth than MyChron 6 data?

The MyChron 5 is limited to 50 Hz on most channels and 10 Hz GPS. The MyChron 6 logs at up to 1000 Hz and 25 Hz GPS — giving significantly smoother, more detailed graphs. This is one of the key reasons Aaron Harris recommends the MyChron 6 for all new purchases.

Can I change logging rates on my MyChron?

Yes — logging rates are configured in RaceStudio 3 and synced to the dash. Contact Rex Harris at Harris Race Radios if you need help configuring your MyChron logging setup.

Related Guides

AiM MyChron NZ & Australia — Buying Guide & Full Product Range →

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