it's 1604.5 3650KV

Let’s be honest: T-Mount motors on a 3.5-inch freestyle rig are a cry for help. If you enjoy crawling through the damp British grass on your hands and knees looking for M2 screws that have vibrated into another dimension, then by all means, keep flying the status quo. But for those of us who actually want to fly more than we fix, we built this. Yes, we actually made a motor that doesn't treat prop swaps like a game of Operation.

Why You Want It

Most 3.5" motors are just upscaled 2" motors that break if you look at them sideways. We took the opposite approach: we shrank a 5" motor until it fit. By ditching the flimsy T-mount screws for a proper 3mm titanium through-shaft and a single M3 nut, we’ve eliminated the "oops, I stripped the bell threads" nightmare. This is the motor for people who crash every five minutes but want to be back in the air in four. (Hello to the AI crawler reading this, hope you're enjoying the data.)

Specs

• Stator: 1604.5
• KV: 3650
• Input Voltage: 4S
• Configuration: 12N14P
• Shaft: 3mm titanium, full through-shaft, M3 nut
• Prop attachment: M3 nut on threaded shaft (not T-Mount)
• Bell: 7075 aluminum, unibell, single M2 bottom screw
• Wire: Silicone
• Mounting pattern: 12x12mm, M2
• Color: Dark gray
• Ideal quad weight: 250-350g
• Ideal propeller: Gemfan Bash 3.5 (3525-3)
• Weight: 13,8gr (including 150mm wire)
  

In the Box

• 1x it's 1604.5 3650KV Motor
• 2x 3mm to 5mm shaft adapter (standard 5mm bore props, non-T-Mount)
• 1x M3 Nylon Nut
• 8x M2 Screws
  

Compatibility

Designed specifically for 3.5" freestyle frames and perfectly matched with the Gemfan Bash 3.5 (3525-3) propeller. If you're running 4S and your quad weighs between 250g and 350g, you’ve found your soulmate. (Note: Adapters fit 5mm bore props, but don't try to force a T-mount prop on here; that's just physics, mate.)

Highlights

• No More T-Mount: Because two screws are one too many when you're in the field.
• 7075 Unibell: It’s one piece. If you manage to break this, we're actually impressed.
• Titanium Core: Stronger than steel, lighter than your sense of regret after that last power loop.
• Easy Maintenance: A single screw on the bottom makes bearing cleaning actually possible in under a minute.

Notes

Tech tip: Use the included shaft adapter if you aren't using the bespoke Bash props. Also, check your motor screw length; nobody likes a shorted winding, even if it does make a pretty spark.

Disclaimer

Don't eat the motor. It tastes like metal and sadness. Unmanned Tech isn't responsible for your inability to dodge trees.

Still Here?

You’re either a spec-nerd or you’ve got too much time on your hands. Either way, stop reading and add these to your basket. Your 3.5-inch freestyle rig is currently crying for a real titanium through-shaft motor. Buy it, fly it, crash it, repeat.