Summer heat: field day packing list in India

Indian summer field days are a thermal problem for pilots, LiPos, and ESCs — plan shade like you plan props. North India hits 45°C+ ambient; south coastal adds humidity. A "full day" in April is often two morning hours and one evening hour if you are smart. Midday is for charging in shade, not for freestyle.

Pack list (check before leaving)

Shade & comfort
□ Pop-up canopy or umbrella + stakes (wind in open fields)
□ Ground sheet or mat — hot dust burns knees
□ Hat + light long sleeves — sunburn kills focus
□ 2× water per person minimum; electrolytes if 3+ hours
□ Snacks that do not melt (avoid chocolate in the car)

Electronics & batteries
□ Cooler bag or insulated lunch box for LiPos between flights
□ LiPo safe bag for transport
□ Zip bags for phone, radio, tools (dust)
□ Microfiber for goggles + spare face foam if you sweat heavily
□ Power bank for phone (OTP, maps, support calls)

Flying
□ Props × 2 session worth
□ Tools per field repair kit — [full list](/blog/building-a-field-repair-kit)
□ Tape, zip ties, spare antenna
□ Chair — standing in sun ruins tuning patience

Session timeline (summer realistic)

Heat stroke is not macho. Morning and evening windows beat solar noon every time.

Charging timing

Charge in shade or air-conditioned car with doors open — never closed hot cabin. A parked car in Jaipur at 2 p.m. can exceed 60°C inside; LiPos left on the seat are a fire risk, not a meme.

See field charging and LiPo safety. Parallel charging at home night before — field charge at 1C or lower when hot.

Flying discipline

• Cool-down packs 10–15 min before recharge — warm to touch = wait
• Shorten sessions when motors too hot to touch for 2 seconds
• Filter tune bias toward conservative D in afternoon — props wash and motors heat-soak
• Lower VTX power if vtx feels hot — airflow matters on 800 mW analog in still air
• Log OSD current — saggy packs show up before puffing — C-rating

Motor / ESC

Undersized builds show first in heat — throttle headroom matters more than winter. Cheap ESCs without heat sink airflow desync when you would not expect it in March.

Motor temp check:
After each pack — fingers near bell, not on props
Hotter than previous pack at same throttle? → shorter packs or props down one size
One motor hotter than siblings? → screw, bearing, or bent shaft

Pilot heat — know the signs

Assign someone to hydration reminders on crew days. FPV goggles reduce peripheral awareness of how cooked you are.

GST / logistics (summer sale season)

Summer often overlaps online sales — order props and packs two weeks before a trip; couriers delay when everyone orders at once. Domestic LiPo surface to remote pincodes can miss a holiday weekend — buying checklist.

When to call it

Three signs to pack up early:

1. Packs puffing or swelling after normal flights
2. Repeated voltage warnings on fresh-ish cells
3. Any pilot feeling dizzy

You can fly next weekend. You cannot un-burn a field reputation or a battery.

Crew coordination (multi-pilot summer day)

Split field charging across two cars if one fuse blew last time — boring redundancy beats noon downtime.

GST / spare ordering before heat season

Order props, arms, and two fresh packs in April from a domestic seller with invoice — sale-week courier delays hurt more when everyone flies the same dry weekend. Buying checklist for pincode LiPo rules.

Post-session cool-down (do not skip)

1. Land → disarm → remove battery
2. Packs in cooler bag OPEN top — not sealed hot
3. Motors cool to touch before next arm
4. Goggles wipe — sweat salts fog lenses next pack
5. Log which pack sagged — retire early in heat — [C-rating](/blog/c-rating-myths-and-real-current-draw)

Ten minutes of shade discipline adds a full third session window in the evening.

Car and transport rules (non-negotiable)

Closed cars in Indian summer are battery ovens. Treat transport like flying — boring habits prevent fires.

Arriving at field:
1. Packs out of car within 5 min — shade or cooler bag
2. Goggles and radio out of direct sun
3. Charger setup under canopy before first arm
4. Never "just five minutes" with full packs in closed car

Common summer session mistakes

Plan two short windows over one long bake. Your packs, ESCs, and knees will thank you on the drive home.

See also

• Filter tuning for hot climates
• Monsoon flying and storage in India
• Building a field repair kit