School + team badge on the left, callsign + autosave indicator on the right. Callsigns (e.g. Striker7) are the pilot's in-game handle and persist across every screen, leaderboard, and flight log. The saved-state line is reassurance, not a button — saves happen automatically.
My Configs
7 / 20
New-config wizard
Two tracks, no blank slate
Clicking this button opens a multi-step wizard — every new config goes through it. Track A (recommended): 4 steps, anchored on a scale reading of the student's current drone — the most accurate path. Track B (advanced): 3 steps for students designing without a physical drone yet, with a hardware-overhead estimate for receiver/camera/wiring/screws. Try it — the wizard is fully interactive in this mockup; you can click between steps to inspect each screen.
Build library
Saved configurations (7 / 20)
Each pilot keeps up to 20 configs. Cards show baseline → new weight for Track A configs (anchored on a real scale reading) or just an estimate for Track B (from-scratch). The weight number colors against the 300 g tech-inspection cap: gray when comfortable, amber > 270 g, red at the limit. Selecting a card drives every other panel.
Selected Config
Faster Striker
Baseline → Upgrade
Five slots, two columns each
Each row shows what's currently on the drone (left) versus the upgrade the student is testing (right). Quantities are real: motors ×4, props ×4, the rest ×1. The five baseline slots here were pre-filled by the wizard from the seeded Saker Bantam DS200 v2.0 OEM reference — students starting from a different drone may have OEM/Unknown baseline slots they have to identify or leave blank. A slot can be in three states: Upgraded (new part picked from catalog), Known Existing (current part identified — either from the seeded OEM data or a manual weight entry), or OEM/Unknown (untouched — its weight is absorbed into the scale reading from the wizard).
Track A · From current build (Saker Bantam DS200 v2.0)Baseline weight: 232g · scale reading includes RX, LED, screws, wiring (~8–14g)
3 days ago
⚡Motor×4
→
🌀Propeller×4
→
⚙ESC / AIO×1
→
🔋Battery×1
→
🛡Cage / Frame×1
→
Weight Math
Δ +28.4g
Slot
Change
Qty
Δ Weight
Baseline
Scale reading (whole drone)
—
232.0g
Motor
iFlight 1404 3800KV → BETAFPV 1404 4500KV
×4
+5.2g
Prop
Gemfan 2520-3 → HQProp T2.5×2.5×3
×4
+3.2g
ESC / AIO
iFlight U19 AIO — Not changing
×1
0.0g
Battery
Tattu R-Line 650mAh 95C → CNHL 720mAh 90C
×1
+20.0g
Frame
iFlight 20cm CF Frame + Exoskeleton — Not changing
×1
0.0g
New estimated all-up weight260.4g
Weight math · Track A
Why this math is accurate
The baseline (232g) was measured on a real scale, so it already includes everything — frame, motors, props, AIO, battery, plus the misc hardware not in the 5-category model: ELRS RX (~1–2g), LED ring (~2–4g), screws + standoffs + zip ties (~3–5g), wiring (~2–3g). Subtotal misc ≈ 8–14g, all absorbed into the scale reading. The delta math only touches the slots being swapped, multiplied by the right quantity (motors ×4, props ×4). Untouched slots contribute zero — their weight is already in the baseline. This is why Track A is the recommended path: no overhead estimation needed.
Performance & Insights
All-Up Weight
232g→260.4gΔ +28.4g
232g · baseline
260g · new
Tech Limit · 300g
0g270g300g
Weight bar
Baseline → new, on the way to the 300g wall
Linear 0–300g track. The grey marker is your baseline (the scale reading from the wizard — includes everything: motors, props, frame, RX, camera, wires, screws). The accent marker is the projected weight after the upgrade. A stock Saker Bantam DS200 v2.0 weighs in around ~232g per our component sum, well under the FAA sub-250g registration threshold the kit advertises — the upgrade above pushes it to 260g, still legal but tighter. The amber zone (270–300g) flags "close to the limit"; the white wall on the right is the hard 300 g tech-inspection cap.
Performance vs. Baseline
Baseline
◄ worseBASELINEbetter ►
⚡Top Speed
▲ +18%
🚀Punch
▲ +12%
🔋Flight Time
▼ −22%
🌀Agility
▲ +5%
⚖Weight Budget
▼ −28%
Right = better · Left = worse · Length = magnitude of change
Power bars · % delta
Right = better, left = worse
Six axes of change relative to the baseline (your current drone). Green bars grow right for improvements; red bars grow left for regressions. The label on the right is the exact percentage. We don't show absolute scores like "7.6 / 10" because the physics model isn't calibrated to that precision — but the direction and magnitude of change is reliable.
Insights & Warnings
◆
Info: Main tradeoff: Speed ↔ Endurance
You're gaining +18% Top Speed but losing 22% Flight Time.
✓
Safe: ESC headroom acceptable
Estimated peak draw is ~78% of the 20A AIO limit (up from 62% on baseline).
▲
Warning: 87% of weight budget used
New estimated weight is 260.4g of the 300g cap — 39.6g of headroom remaining.
Coaching
Auto-generated insights
Three flavors: info (the headline tradeoff this upgrade is making), safe (passing checks like ESC headroom or weight under cap), and warn (something to watch — close to weight cap, current draw climbing, prop tip-speed). All checks run against the upgrade build + the new estimated weight. Each line links to the underlying calculation so students can see why, not just what.
New Config Wizard
How are you starting?
Step 0 of N
How are you starting?
Two paths into a new config. Track A is recommended whenever you have a real drone — it anchors the weight math on a measured scale reading instead of estimates.
Track A · Step 1 of 4
How much does your drone weigh right now?
Put it on a gram scale and enter the reading. This single number captures everything on the drone — frame, motors, props, AIO, battery, receiver, camera, wiring, screws — so we don't have to estimate any of it.
grams
Stock Saker Bantam DS200 v2.0 averages around 232g. Your number may differ if you've already swapped parts.
💡
Measure with the battery installed
All-up weight is the number that matters at tech inspection. Take the reading exactly as the drone would fly. Use your team's lab scale (gram precision); kitchen scales often round to 5g and lose detail.
Track A · Step 2 of 4
What's currently on your drone?
We've pre-filled the stock Saker Bantam DS200 v2.0 hardware. For each slot, choose how well-known your current part is. Slots you can't identify still get their weight counted via the scale reading from Step 1.
⚡
Motor ×4
iFlight XING2 1404 3800KV
🌀
Prop ×4
Gemfan Hurricane 2520-3
⚙
ESC / AIO
iFlight U19 AIO (~7g est.)
🔋
Battery
Tattu R-Line 4S 650mAh 95C
🛡
Cage / Frame
iFlight 20cm CF + Exoskeleton (~75g est.)
ℹ️
Three modes, three trade-offs
From catalog gets full specs (KV, pitch, mAh) so all 5 power-bar axes light up. Manual weight gets weight-only — the upgrade math still works but stat axes that depend on those specs are unavailable. OEM/Unknown means "I don't know" — weight is absorbed in the scale reading and that slot's specs are skipped.
Track A · Step 3 of 4
What are you swapping in?
Pick a new part for any slot you want to upgrade. Leave a slot blank to keep your current part. Quantities are real — when you upgrade motors, you're upgrading all four.
⚡
Motor ×4
iFlight XING2 1404 3800KV → BETAFPV 1404 4500KV
🌀
Prop ×4
Gemfan Hurricane 2520-3 → HQProp T2.5×2.5×3
⚙
ESC / AIO
iFlight U19 AIO — not changing
🔋
Battery
Tattu R-Line 4S 650mAh 95C → CNHL 4S 720mAh 90C
🛡
Cage / Frame
iFlight 20cm CF + Exoskeleton — not changing
Track A · Step 4 of 4
Review and save
Here's what your config will look like. You can give it a name and save, or go back and tweak anything.
Names show up in your build library. Pick something that captures the build's character.
Weight math · Track A
Baseline (scale)232.0g
Motor swap (×4)+5.2g
Prop swap (×4)+3.2g
Battery swap+20.0g
New estimated260.4g
Predicted change vs. baseline
⚡ Top Speed▲ +18%
🚀 Punch▲ +12%
🔋 Flight Time▼ −22%
🌀 Agility▲ +5%
⚖️ Weight Budget▼ −28%
📋
Main tradeoff: Speed ↔ Endurance
You're gaining speed and punch at the cost of flight time and weight headroom. After saving, log a flight test to see how the predicted deltas hold up against measured performance.
Track B · Step 1 of 3
Choose your 5 parts
No drone yet, no scale reading to anchor on — pick a complete set of 5 parts from the catalog. The weight math will sum them with the right quantity (motors ×4, props ×4) plus the hardware-overhead estimate from the next step.
⚡
Motor ×4
Not picked
🌀
Prop ×4
Not picked
⚙
ESC / AIO
Not picked
🔋
Battery
Not picked
🛡
Cage / Frame
Not picked
⚠️
Track B totals are estimates
Without a scale reading, the math sums catalog weights plus a hardware-overhead value. Real builds always come in a few grams off the spec because of glue, solder, mounting hardware, and component tolerances. Build it, weigh it, then start a Track A config from the measured weight for a verified number.
Track B · Step 2 of 3
Add hardware overhead
Your drone has components beyond the 5 main slots — receiver, camera, video transmitter, antenna, wiring, screws, standoffs, zip ties. We need a single number for all of that.
grams
Default 11g — midpoint of the 8–14g typical range we measured for stock Saker Bantam misc hardware.
🔬
STEM moment — measure it yourself
For a more accurate number, gather all your misc hardware in a cup. Weigh the cup full, weigh it empty, subtract. That's measurement, recording, and managing systematic error — core lab skills. Roughly: ELRS RX ~1–2g, LED board ~2–4g, screws/standoffs/zip ties ~3–5g, wiring ~2–3g.
⚠️
You're adjusting the default
Make sure your value accounts for the receiver, camera, VTX, antenna, wiring, and mounting hardware — everything not in the 5 main slots. If you're unsure, leave it at the default; real-world builds tend to land within ±3g of it.
Track B · Step 3 of 3
Review and save
Track B configs are estimates. The build summary will show a persistent banner reminding you to weigh the assembled drone and switch to Track A for a verified number.
Weight math · Track B
Motor (×4)36.4g
Prop (×4)4.0g
ESC / AIO7.0g
Battery82.0g
Frame75.0g
Hardware overhead11.0g
Estimated all-up215.4g
What you'll see in the editor
Power bars compare this build to itself (the upgrade is the build), so deltas are 0% across the board until you save and edit a future upgrade. The weight bar shows the estimated all-up against the 300g cap, with a banner reminding you it's an estimate.
Once you build it physically, start a new Track A config from the measured scale weight to validate.