Rates and expo presets for freestyle vs racing
Rates define how fast the quad rotates per stick deflection; expo softens the center so fine control near hover does not feel twitchy. Super rates add extra rotation at stick extremes for flips and snaps. Together they shape stick feel more than any single PID point — yet pilots paste JSON from pro pilots and wonder why the quad feels worse. Rates are personal, seasonal, and tied to camera tilt, goggle size, and whether you fly freestyle smear or gate precision.
When NOT to change rates
| Situation | Fix something else |
|---|---|
| Oscillation, buzz, hot motors | PID / filters / mechanical — Betaflight basics |
| Drift in hover | Trim, accelerometer, wind — not super rate |
| Sloppy only in hard turns | Propwash — propwash tuning |
| Felt fine until crash | Inspect hardware — tuning after a crash |
| Copying rates fixed "nothing" | Base tune may be wrong |
Change rates when tracking and comfort are the issue, not when the quad is mechanically or PID-unstable.
Betaflight rate types (quick)
| Type | Feel |
|---|---|
| Actual | Common; center and max rates explicit |
| Betaflight | Legacy feel; still on many presets |
| Raceflight | Alternative curve; try if migrating from RF |
Use one type per quad — mixing philosophies across models is fine; mixing on one FC is confusion.
Expo (0–1 typical): higher expo = softer center, same max at full stick (with same rates).
Super rate / max rate: extra rotation at high stick — freestyle often uses more on roll/pitch than yaw. In Actual rates this is the max rate slider; legacy Betaflight rates use the named Super Rate control.
Freestyle bias
Freestyle rewards smooth proximity and big moves when you ask for them:
- Moderate center sensitivity — fine control near gaps and people
- Higher super rates on roll/pitch for flips and power loops when stick hits extremes
- Enough expo to hover fingers without jitter — many pilots run 0.2–0.4 as a bracket, not a rule
- Yaw often lower super rate than roll — camera lines matter more than spin speed
- Pair with camera tilt — steeper tilt needs different pitch stick habits; see camera angle
Freestyle "sloppy" often means too much center rate without expo, not too little P.
Racing bias
Racing rewards repeatable stick travel per meter:
- Sharper center — gates reward precision; less expo debate, more consistency
- Often lower super rate on axes you do not need for tricks
- Yaw tuned for corner entry — personal but usually controlled
- Rates matched to track size — tight indoor vs open outdoor differ
- Camera tilt lower than freestyle — different pitch curve perception
Racers A/B rates more scientifically than freestyle pilots because seconds matter — use DVR and split comparison.
Starting points (not prescriptions)
Use as brackets — adjust ±10–15% per session:
| Axis | Freestyle bracket | Racing bracket |
|---|---|---|
| Roll center | Moderate | Moderate-high |
| Roll super | Higher | Moderate |
| Pitch center | Moderate | Moderate-high |
| Pitch super | Higher | Moderate |
| Yaw center | Moderate | Moderate |
| Yaw super | Lower than roll | Controlled |
| Expo | Often higher | Often lower |
Your goggle FOV, radio gimbal tension, and thumb length break any table. These are test seeds.
Radio and gimbal setup matters
Rates live between your thumbs and the FC — sloppy gimbals or mismatched stick endpoints make any preset feel wrong.
| Setup item | Symptom if ignored |
|---|---|
| Stick center calibration | Drift or uneven expo feel |
| Gimbal tension too loose | Overshoot on small inputs |
| Gimbal tension too tight | Fatigue, inconsistent snaps |
| Travel endpoints not 100% | Never reach max rate |
| Mode switch wrong model | "Rates broke" — wrong profile |
Calibrate radio in EdgeTX/OpenTX before blaming Betaflight. See radio gimbals and EdgeTX basics.
A/B test method
1. Save current rates profile with date
2. One pack at spot A with rates X — fly fixed line (3 gaps or 2 minutes)
3. Same line, same battery class, rates Y — not same depleted pack if avoidable
4. Change ONLY rates — not PID — per session
5. DVR or memory beats vibes-only — review stick cam if you run one
6. Pick winner; iterate one axis at a time tomorrowDo not change rates and PID same afternoon — you will not know which helped.
Battery note: full pack feels snappier; comparing rates on pack 1 vs pack 5 lies. Same voltage bracket matters.
Rates vs PID interaction
High super rates demand faster tracking — the FC must follow setpoint changes. If rates go up and quad feels laggy, you may need slight FF or P — but fix rates first, fly one pack, then tune PID. See propwash tuning for FF when snaps lag in logs.
Lowering rates can make a "bad tune" flyable — proof the problem was feel, not motors.
Common mistakes
- Pasting influencer JSON without matching prop weight class
- Changing roll, pitch, yaw, expo all at once
- Max super rate because it looks cool in configurator
- Ignoring yaw — spin entries feel wrong
- Racing rates on a heavy GoPro rig without throttle headroom
When to stop
If two rate profiles feel identical in DVR, stop tweaking — fly. Rates are optimization, not morality.
If neither profile feels right, fix mechanical tune before chasing rate influencers.
India field note
Hot days change grip and battery sag — rates that felt perfect at 25 °C may feel sloppy at 40 °C. Sweaty thumbs slip; expo can feel different. Summer packing includes mental note to re-check rates seasonally, not only after gear changes.
Afternoon voltage sag can make the same rates feel slower on roll — do not crank super rate to compensate for a tired 6S; swap packs.
First flights on new build
Rates on a new quad should start conservative — see first 10 flights after a new build. Learn throttle and weight before max super rate.
Symptom → rate direction
| Feel | Try |
|---|---|
| Twitchy center | More expo or lower center rate |
| Cannot flip fast enough | Higher super rate on roll/pitch |
| Overshooting in corners | Lower center or more expo |
| Yaw spins too aggressive | Lower yaw super |
| Fine until full stick | Super rate too high — reduce |
Seasonal rate review
Rates are not set-and-forget. Revisit when:
- Camera tilt changes more than 5°
- Weight changes (HD vtx, mount, battery class)
- Season shifts — heat and sweat change thumb feel
- New goggles FOV — same numbers feel different
Save rate profiles with names: freestyle-summer-6s, race-club-tight. Restoring beats reconstructing from memory after a configurator wipe.
Rates are not someone else's JSON file. They are the control curve between your thumbs and the quad. Test like a pilot, not a copy-paste machine — one axis, one pack, one honest line.
Discussion
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