Guides

Short write-ups, each built around a number that was measured on the bench rather than copied from a product page. One decision per guide, one thing to try.

Start here
First tiny whoop: 65mm analog BNF, ELRS radio, any goggles

The shopping list with no hedging, and the measured Air65 analog stack — 25.42 g, 3:53 cruise.

Decide
US whoop rules: TRUST, weigh under 250g, spotter for outdoor FPV

Recreational checklist only — not legal advice. Pass TRUST, weigh ready-to-fly, and do not treat under 250 g as a free pass.

Setup
ExpressLRS on a whoop: bind phrase, 250 Hz, failsafe

Same phrase both sides, one packet rate, one EdgeTX model, one props-off failsafe test. No menu archaeology.

Practice
Sim to first pack: paste rates, angle then acro, maiden the Air65

Same TX16S in the free sim, the rates you will fly, then indoor hops on a 65mm analog whose calculator AUW is not a surprise.

Decide
Whoop video: analog first, HDZero when you care

Which video system by how you fly, what each locks you into, and the flight time it costs. Goggles included.

Decide
BETAFPV Air vs Meteor (and Pavo): analog, HDZero, or DJI

Start on Air analog. Digital on this site is HDZero, not Meteor. Pavo is cine later. Goggles lock the rest.

Decide
Meteor75 Pro II O4 Wide: second whoop after analog Air65

A 41.5 g, 1S, 80mm DJI whoop with the 159° O4 Wide camera. Worth it if you already own the goggles; not a first whoop.

Decide
Air65 II Freestyle vs Racing vs Champion: which indoor BNF

Freestyle is the beginner default. Racing is the mid fork on the same PnP frame. Champion later. Retail BNF is not the Gear Analog Daily Driver.

Decide
1S charger: WhoopStor V3 first, W63 when you outgrow it

Shared settings vs per-port, storage mode, and the power-supply mistake that gets blamed on packs.

Decide
WhoopStor V3 vs HexaCharger: keep the default or USB-C kit

WhoopStor V3 stays the beginner default. HexaCharger is a USB-C desk fork when you already live on capable PD — not a W63 rematch.

Decide
1S whoop battery by size: what the bench flew

LAVA 300 under every measured 65mm number, now discontinued; weBLEEDfpv 450 on three provisional 75mm builds. Plus what current listings claim.

Decide
1S whoop battery connectors: BT2.0, A30, PH2.0, NX69, EM2.0

BT2.0 and A30 are cross-compatible. Pick one connector and re-pigtail everything else. 65–85mm 1S whoops only.

Build & tune
Air65 PID tune: the three published 65mm BetaFPV cards

Exact PIDs and rates from the tune database, the props-off apply, and the D-name trap between BF 4.5 and the 2025.x releases.

Measured
HDZero vs analog on a 65mm: a 34% flight-time cost

233 s against 154 s on the same pack and props. Why the cost is mostly fixed, and what the numbers do not say.

Build & tune
65mm SE0702 28000KV + Gemfan 1219 3-blade

Betaflight setup, filtering and flight notes for the HDZero Mobula6 build on the bench page.

Every figure quoted in a guide traces back to a row on the bench page or a log you can re-run through the blackbox analyzer. More guides land as more builds cross the bench.