The short version
- Thrust is the static push a motor produces, measured in kg (or lb).
- Rule of thumb: aim for thrust roughly equal to or above your all-up weight, with margin for larger pilots and hot/high conditions.
- Underpowered is the common mistake — it makes launches hard and climb-out marginal.
- More thrust usually means more weight and fuel burn, so match it to your needs, don't just max it out.
The number one gear mistake we see new pilots make isn't the wrong wing — it's a motor that's too small for them. Let's make sure that's not you.
What "thrust" actually means
Thrust is the amount of forward push a paramotor produces when the throttle's open, measured as static thrust in kilograms or pounds. It's the force that gets you running fast enough to launch, then climbing once you're airborne. Every engine and propeller combination has a thrust figure, and matching it to your weight is the whole game.
Why underpowered is the trap
An underpowered motor doesn't announce itself in the shop — it feels fine on your back. It shows up on the field: sluggish acceleration on launch so you're sprinting to get airborne, weak climb-out that eats up runway and clearance, and genuinely marginal performance on hot days or at higher elevation when the air is thin. For a heavier pilot on a small motor, a routine launch becomes a struggle. Get enough thrust and the same launch is easy and safe.
All-up weight = your body + full gear + fuel. Larger pilots and those flying in heat or altitude should add margin on top.
A practical sizing table
| Pilot weight (with gear) | Target thrust | Engine class |
|---|---|---|
| Under 175 lb | ~50–55 kg | Light (≈130cc) |
| 175–210 lb | ~60–70 kg | Mid (≈185cc) |
| Over 210 lb | 70 kg and up | High-thrust (200cc+) |
Treat these as starting points. If you're at the top of a bracket, or you fly somewhere hot or high, size up. Thin air and heavy loads both eat into effective thrust exactly when you need it most.
The trade-offs of more thrust
If more thrust is safer, why not just buy the biggest motor? Because power isn't free:
- Weight: Bigger engines and cages weigh more — and you carry it on your back during launch.
- Fuel burn: More displacement generally means more fuel used per hour.
- Torque: High-thrust motors produce more torque effect that you learn to manage in flight.
The goal isn't maximum thrust — it's enough thrust with sensible margin, in a package you can comfortably carry and launch. A light pilot on a huge motor is as poorly matched as a heavy pilot on a tiny one.
Density altitude matters more than pilots expect
On a hot afternoon at elevation, the air is less dense — your prop bites less air and your effective thrust drops, sometimes noticeably. If you fly in the mountains or in summer heat, build in extra margin. The motor that's perfect on a cool coastal morning can feel weak at noon in the high desert.
Getting it right
Weigh yourself with full gear, be honest about where and when you fly, and choose thrust with margin — especially if you're a larger pilot or fly in demanding conditions. If you're between engine classes, tell us your weight and typical flying site and we'll steer you to the right one. It's a five-minute conversation that saves you from the most common — and most frustrating — beginner gear mistake.
Not sure which motor fits?
Send us your all-up weight and where you fly. We'll match you to the right thrust class.
Browse motors →Thrust figures and brackets are general guidance. Actual requirements vary with wing, propeller, altitude, and conditions. This guide is educational, not personalized safety advice.