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Spray drone questions
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Posted 7/1/2024 14:00 (#10794697 - in reply to #10793241)
Subject: RE: Spray drone questions

Flying them feels like flying the small ones (same controls and what not), just bigger.

T50 vs T40 isn't a huge difference - T50 has better sensors for obstacle avoidance, 3D array, and altitude, has a bigger pump, better signal to the controller (4 antennae vs 2) but overall same tank size and batteries. T50 follows hills better and can spray a full 3gal per acre at 32ft/s (~21mph). Can also use obstacle avoidance at full speed too. T40 limits you in speed if you have obstacle avoidance on. If you're gonna be waiting a bit, you could probably find some used T40's for a decent price once the T50's start rolling out.

As for T25... they are just small T50s with a different battery.

IMO - If you have hilly fields, obstacles like pivots, power lines, or trees in or around your field, or want to spray 3gal/acre, the T50 will be the more efficient choice. T40s work just fine though. If you have small fields (ie. not a full quarter) then you can get away with a T25. Biggest limit here is tank size. On a normal quarter (~160 acres), you'll likely run out of spray before the T25 is back to you, making things a lot slower.

Then you also need to consider the other factors for spraying, like trailers, generators, tanks, pumps, etc. You'll want 3 batteries minimum, 4 is recommended if you don't use the DJI generator. Idk how the newer chargers work on a standard generator, but its basically the same thing that's built into the DJI one. Plus all your licenses, certificates, and exemptions so you're legal to fly.

Highly recommend doing training instead of just full sending it. There's a lot of little tips and tricks to pick up to be safe and efficient with these things, and you'll be glad you spent the money on a class rather than replacing $1,000 worth of blades.
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