HQProp J35 vs J37: Which Props Should a Beginner Run

Props are the cheapest part on your quad and the one you'll replace the most. They also change how your quad flies more than almost anything else. If you're building or flying your first 5 inch, here's what actually matters, minus the gatekeeping.

What the numbers mean

Prop names look like code, but they're simple. Take the HQProp J35 — it's a 4.9x3.5x3:

• 4.9 — diameter in inches. Fits any 5 inch frame.
• 3.5 — pitch. How far the prop "screws" through the air each turn. Higher pitch = more top speed and punch, but more load on your motors and battery.
• 3 — number of blades. Tri-blades are the standard for 5 inch freestyle: grippy, smooth, and predictable.

Start here: HQ Juicy Prop J35

If you don't know what to buy, buy these. The HQ Juicy Prop J35 is a smooth, durable all-rounder that works on a huge range of builds and tunes. It's forgiving, it handles crashes well, and it doesn't ask much of your motors — exactly what you want while you're learning.

• 4.9 x 3.5, tri-blade, 3.6g
• 5mm shaft — fits standard 5 inch motors
• Comes as a 4 pack (2 CW + 2 CCW)

Want a bit more punch? HQ Juicy Prop J37

The HQ Juicy Prop J37 is the J35's slightly spicier sibling. A touch more pitch (3.7) gives you more drive when you punch out and carry speed through lines. Grab these once you're comfortable and want your quad to feel a little more aggressive.

• 4.9 x 3.7, tri-blade, 3.4g
• 5mm shaft, 2 CW + 2 CCW

J35 vs J37 — quick answer

• First quad, learning, lots of crashing: J35
• Comfortable flying, want more speed and punch: J37
• Not sure? Get a pack of each and feel the difference. Props are the cheapest tuning upgrade there is.

Flying a 3.5 inch instead?

Smaller quads need smaller props. We carry the HQProp T3.5x3.5x3 and HQProp T3.6x3x3 — light tri-blades for 3.5 inch builds. Check your motor shaft and mounting before you buy.

Beginner prop tips nobody tells you

• Buy more than you think. You will break props. Keep at least 2–3 spare sets in your bag.
• Check rotation. Each pack has CW and CCW props. Match them to your motor direction (props-in or props-out) or your quad will flip on takeoff.
• Snug, not crushed. Tighten prop nuts firmly, but don't crank them — you can damage the prop hub or motor shaft.
• Swap chipped props. A nicked prop causes vibrations that make your quad fly worse and can heat up your motors.
• Keep a driver in your pocket. A mini pocket hex driver saves a walk back to your bag when something rattles loose.

Still not sure?

Ask in the B2FPV Facebook group. Nobody there will tell you to "just Google it." And if you're still putting your first build together, start with our Get Started guide and the PZ5 frame.