What size are rhe bullet connectors? 2 mm???

Dear,it's 3.5mm bullet connectors.

what size mounting screws do you use to mount these motors to the frame arms?

M39 M3 Hexagonal Hex Screws 9mm

What size Nuts do these motors use to hold on the props?

Dear,the size of Nuts to hold on props was M6 size.

None of the props I've tried work with this without modification. 1045 is a good size but the axle has flats and is ~8mm in diameter. Are there any?

You can have a try 1045 Self-Tightening Propellers: https://www.amazon.com/RAYCorp-Self-Tightening-10x4-5-Propellers-Pieces/dp/B07H1HXCGJ/ref=sr_1_12?keywords=1045+props&qid=1562035838&s=gateway&sr=8-12

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Readytosky

产品编号: 259090575

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细节

Brand
Readytosky
Model name
f450 f550
Speed
920 RPM
Voltage
12 Volts
Product dimensions
28W x 24H

🔇Low noise, ultra-stable operation

🔌3.5mm bullet connectors, no soldering needed

⚙️920KV high-speed brushless power

描述

🚀 Elevate your drone game with power and precision that commands the sky!

WHISPER QUIET FLIGHT - Minimize noise pollution and maximize focus with ultra-quiet motor design—fly discreetly, fly smart.
PLUG PLAY CONNECTORS - 3.5mm bullet connectors eliminate soldering hassle—get airborne faster and with less frustration.
BALANCED CW CCW PAIRING - Includes both clockwise and counterclockwise motors for perfect flight stability and control—no compromises.
UNIVERSAL FRAME COMPATIBILITY - Tailored to fit DJI Phantom F330, F450, F550, S500, and S550 frames—versatility that matches your drone ambitions.
PRECISION 920 KV BRUSHLESS POWER - Experience smooth, high-efficiency thrust with 920KV rated speed, engineered for pro-grade quadcopters.

The Readytosky 2212 920KV Brushless Motor set offers high-speed, low-noise performance with easy 3.5mm bullet connectors, designed for seamless integration with popular DJI Phantom and compatible quadcopter frames. Each pack includes balanced CW and CCW motors to ensure stable, professional-grade flight control.

规格

Manufacturer	Readytosky
Part number	(B46+B48)*X
Item Weight	191 g
Product Dimensions	2.79 x 2.79 x 2.39 cm; 190.51 g
Item model number	(B46+B48)*X
Material	Stainless Steel
Voltage	12 Volts
Item Package Quantity	1
Speed	920 RPM
Batteries Included?	No
Batteries Required?	No

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